Temperature Catalogue

TM

group company

TemperatureProduct Catalogue

Connection Heads | Temperature Transmitters | Digital Thermometers & TransmittersMineral Insulated Thermocouples | Mineral Insulated Resistance Thermometers | Thermowells

1 | Temperature Product Catalogue

Founded in 1963, Thermocouple Instruments is an established manufacturer of custom designed process measurement equipment for a wide range of industries including Petrochemical, Oil and Gas, Chemical, Contract Engineering, Pharmaceutical, Food and Brewing, Power, Steel and Water.

We pride ourselves on strength and versatility, expressed by our ability to design and manufacture to your exact requirements. This is really where our in-house expertise excels and can tailor the exact solutions to your needs.

Our strong technical advice and software programmes, designed in-house, help to make your measurements accurate, reliable and easier to attain.

Our quality process is crucial to our service and our ISO 9001-2000 and ATEX approved assemblies ensure you get quality service not only from the product, but also from the moment you call us.

In 2006 Thermocouple Instruments was added to the British Rototherm group of companies. With over seventy years of experience, British Rototherm continues to be a world leader in the manufacture of industrial instrumentation for measuring, monitoring and controlling Temperature, Pressure, Humidity, Flow and Level.

Introduction

It is our philosophy that the customer is the absolute priority. We have a duty to maintain this principle, and we believe it will give us the edge over our competitors.

We have a highly trained team of sales engineers who listen to, and understand your needs, to achieve the very best solutions with the minimum of fuss.

Our drawing office is extremely experienced and can provide detailed drawings of your requirements prior to manufacture. Customer satisfaction and approval, particularly at these early stages, means everything.

From planning, through manufacture, assembly and test-ing our quality management systems ensures your expectations are exceeded.

Total Package Solution is aimed at giving all our customers temperature, pressure and flow measurement solutions, custom designed to enable a “one-stop-shop” convenience combined with cost effectiveness.

With the recent addition of the Rototherm range of instrumentation, Thermocouple Instruments, as part of the Rototherm Group, can now offer what must be one of the widest ranges of industrial instrumentation to be found anywhere.

Also as part of our Total Package Solution, we can provide a range of high class technical expertise and software to help with any questions, concerns or calculations you may have.

Our Mission Total Package Solution

TM

Contents | 2

ContentsTemperature - an overview 3

Connection Heads

Model H70 Connection Head 4

Model KNY Connection Head 5

Model BUZ Connection Head 6

Model TDMC Connection Head 7

Temperature Transmitters

Model TR48 Temperature Transmitter 8

Model TR12 Digital Temperature Transmitter 10

Model TR12 DIN Rail Mounting Temperature Transmitter 11

Model TR32 Digital Temperature Transmitter HART® Protocol 15

Model TR24 Temperature Transmitter 19

Model DLI Loop Powered Indicator 23

DigiTemp Digital Thermometers & Transmitters 26

Mineral Insulated Thermocouples 28

Mineral Insulated Resistance Thermometers 32

Lagging Extensions 36

Thermowell Materials 38

Thermowells

Fabricated Thermowells 40

Solid Drilled Thermowells 43

Sentinel Programmable Chart Recorder Controllers 47

Sentry Digital Process Indicators 48

PtCalc - Wake Frequency Calculation Software 49

Connectors 51

Thermocouple Colour Codes 52

Other Products Available 53


Temperature - an overviewThe Rototherm / Thermocouple range of temperature assemblies has been deisgned for all industrial applications and is manufactured in strict accordance with the companies ISO 9001:2000 Quality System.

The range includes probes suitable for direct insertion into processes without protective thermowells and full assembles complete with screwed or flanged thermowells and connection heads.

Connection Heads (pages 4 - 7)Our comprehensive range of connection heads provides the best environmental protection for the electrical terminals on terminal blocks or temperature transmitters fitted to resistance thermometers or thermocouple inserts.

Temperature Transmitters (pages 8 - 23)Temperature transmitters are used to convert the primary sensing signal, usually a resistance change for RTD sensors or EMF for thermocouples, into a standard current signal of 4-20mA.

We offer a comprehensive range of temperature transmitters suitable for thermocouples or platinum resistance thermometers (RTD), these transmitters may be either head or rack mounted. Temperature ranges may be factory set or user adjusted. (Programmable, intrinsically safe, Hart®, Profibus® and Foundation Fieldbus® communication versions are available).

Mineral Insulated Thermocouples (pages 28 - 31)A Thermocouple consists of two electrical conductors of dissimilar material connected at one end (the hot junction), the two free ends are connected to the measuring instrument via a reference junction (the cold junction). The connection of these two materials provides an electromotive force (emf).

Mineral Insulated Resistance Thermometers (pages 32 - 35)A Resistance Thermometer is a temperature sensor constructed from resistance wire wound into an element. It is used to measure temperature by means of a change in the electrical resistance with a rise or fall in temperature. The most popular wire used in Resistance Thermometers is platinum, although nickel or copper can also be used.

Lagging Extensions (pages 36 - 37)Lagging extensions are available in a wide range of lengths, sizes and fittings. Materials include Carbon Steel and Stainless Steel. They allow the connection head to be positioned away from the heat source, or through insulating lagging. Nipple/Union/Nipple and Breakaway couplings allow rapid disconnection for testing, and orientation.

Thermowells (pages 38 - 46)Thermowells are used extensively in the power, process, pharmaceutical and petrochemical industries. They are used to protect temperature indicators and sensors from process media and to enable servicing or replacement of sensors without the need to shut down plant.

Our thermowells are precision made to the highest standards of finish in our modern well equipped machine shop and are manufactured to Rototherm,s high quality standards approved to BS EN ISO 9001. Thermowells are available fabricated from tube or drilled from barstock or forgings, full material certification, including original mill and suppliers materials certificates can be provided. If required NACE standard MR-01-75 requirements can be met.

Our custom-design ability puts us ahead of the competition for providing thermowells. As part of an assembly or as a replacement, we can provide thermowells of any size, material and specification. As part of our solution we can also offer stress and frequency calculations to ensure you have the correct design for the job.

Connection Heads | 4

Model H70 Connection Head

Heavy DutyChoice of Materials

- Stainless Steel - Cast Iron - Aluminium

Weatherproof IP68 and IP66Choice of Process EntriesFlameproof - EEx de CertifiedEExe CertifiedEExnA CertifiedSafety Chain

General Description

The Model H70 is a heavy duty IP68 rated connection head which provides environmental protection for the electrical terminals on terminal blocks or temperature transmitters fitted to resistance thermometers or thermocouple insets.

The connection head can be specified as either weather-proof IP68 and IP66 or ATEX Approved Flameproof EEx de IIC T6 when supplied with a suitable Thermocouple In-struments sensor.

The screwed lid is available in two basic configurations, one of which may be provided with a glass window to al-low the use of a temperature transmitter with integral loop powered indicator. Versions with extended lids are also available.

Material of Construction

The H70 can be supplied in the following materials:-Stainless Steel BS:3100 1976 316 C12/ C16Aluminium LM4/ LM25. Aluminium versions are hard an-odised to ISO 10074, but may be painted on special re-quest.Cast Iron BS:1561 1997 Gr 200/ 220. Cast Iron versions are painted with a high temperature epoxy finish.

Cable Entry

The H70 can be provided with up to 4 cable entries, which may be either ½” NPT, ¾” NPT or M20.

Base Entry

Several options are available including ½” API, ½” NPT and ½” BSP(Pl). The H70 head may be fitted with an ‘O’ ring oil seal to guard against oil ingress.

Window Version

The H70 is available with a glass window, to allow use of a temperature transmitter with a loop powered indicator. Please refer to page 23 for details of model DLI1.

Extended Lid

Both forms of the H70 are available with an extended lid, capable of housing two temperature transmitters in ‘piggy-back’ configuration.

IP Rating

The H70 connection head is rated IP68 (40 m immersion) and IP66.

Electrical Classification

The H70 connection head is ATEX approved

II 2 GD EExde IIC T85ºC

II 2 GD EExe II T85ºC

II 3 GD EExnA IIC T85ºC

II 3 GD EExn [L] IIC T85ºC

Cast Iron H70 Head, Standard Lid

Cast Iron H70 Head, Glass Window

H70 Dimensions

Model KNY Connection Head


Model KNY Connection Head

General PurposeAluminium Alloy ConstructionWeatherproof IP65Suitable for Terminal Blocks or Temperature Transmitters

General Description

The model KNY is a general purpose epoxy painted, die cast aluminium connection head. It has an ‘O’ ring sealed screwed lid, with a stainless steel retention chain. The KNY has an Ingress Protection rating of IP65.

Technical Specification

Model Process Entry Cable Entry IP Rating Duty Material

KNY 1/2” BSP M20 IP65 GeneralPurpose

Aluminium Alloy

KNY Dimensions

All dimensions are in mm. Drawings are for illustration purposes only

H70 Standard Lid H70 with optional lid, with or without glass window

H70 with 4 cable entry option (shown smaller)

Connection Heads | 6

Model BUZ Connection Head

General PurposeAluminium Alloy ConstructionWeatherproof IP67Range of Process and Cable EntriesSuitable for Terminal Blocks or Temperature Transmitters

General Description

Model BUZ is a low cost, general purpose connection head which accommodates either a standard Ryton or ceramic terminal block, or a temperature transmitter. The BUZ is of an aluminium alloy construction, and may be supplied with a variety of process and cable connections.

The BUS version is also available with a quick release clamp.


Model BUZ Connection Head


BUZ M241/2” BSP

M20PG16

IP67 GeneralPurpose

LM6 Aluminium Alloy with hinged

lid

BUZ Dimensions

For the latest information on all of our products, please visit our website.

Updated on a regular basis, the website features:

Up to date product information

Product data sheets

Application data sheets

Installation information

www.thermocouple.co.uk



Model TDMC Connection Head

Heavy DutyDMC ConstructionWeatherproof IP65Choice of Process EntriesSelf certified ExnA

General Description

The Model TDMC is a heavy duty IP65 weatherproof con-nection head. The DMC construction makes it resistant to most chemicals and corrosive atmospheres, and is there-fore suited for use on Chemical and Petrochemical com-plexes. The TDMC is available with a wide range of sensor assemblies. This Model has become an Industry Standard and is widely specified by Multi-national Companies.


Model TDMC Connection Head


TDMC M241/2” BSP

M20PG16

IP65 Heavy Dutymaximum

continuous temperature of

150ºC

DMC moulded natural black

finish

TDMC Mini Version

64 DIA 82

TDMC Dimensions




Product data sheets



www.rototherm.co.uk


Temperature Transmitters | 8

Model TR48 Temperature Transmitters

ATEX ApprovalEExia / EExd (when fixed in H70 Head)Radio Frequency Immunity from 20 to 1000 MHz Thermocouple and RTD InputsDifferential TransmittersOpen Circuit ProtectionCold Junction Compensated

General Description

The model TR48 temperature transmitter offers a conven-ient method of increased system accuracy, while reducing costs through the elimination of long runs of expensive compensating cables. The transmitter requires only two wires which carry both supply voltage and current signal, and has a high degree of immunity to interference and noise pick-up.

Dimensions

Loop Drive Capability

Model TR48 Temperature Transmitter

II 1G EExia IIC T4/5

DIN Rail Mounted Version

The TR48 temperature transmitter is also available in a DIN rail mounted version. Manufactured to the same high specification with easily adjustable zero and span poten-tiometers, this model is ideal when larger numbers are required to be rack mounted.

Wiring Details

The slidewire input version of the TR48 produces a linear output proportion-al to the position of the wiper of a slidewire or potentiometer. This provides a convenient way of remotely indicating or controlling the position of any motorised actuator fitted with a re-transmission potentiometer.

Differential transmitters produce an output proportional to the difference between two precision Platinum Resistance Thermometers.A typical application might be to monitor the efficiency of a piece of plant by detecting the heat loss or gain between input and output. In such ap-plications it is often necessary to measure very small differences. Using a differential transmitter with a span of 20ºC, a resolution of 0.01ºC can easily be achieved using only a low cost digital panel meter.

TR48TC Thermocouple Input TR48SW Slidewire input

TR48R Platinum Resistance Input TR48RD Differential Input

ATEX Certificate: BASEEFA 03ATEX 0245X


TR48 Specifications

Input Thermocouple RTD Slidewire Differential RTD

Output 4 to 20 mA (minimum 2.2 mA, maximum 27 mA)

Power Supply 7.5 to 36 VDC (reverse polarity protected) 24 VDC nominal

Ambient Temperature Range - Working

-25 to +85ºC (high 125ºC version available)

Ambient Temperature Range - Storage

-55 to +125ºC

Humidity 0 to 95% Rh non-condensing

Sensor Open Circuit Protection

Upscale standard(downscale to order)

Upscale only N/AUp or Down depending on which sensor fails

Cold Junction Compensation

Fitted as standard N/A

LinearityNot linearised (linear to mV input)

Linear to temperature <0.05%

Linear to position <0.01%

Linear to temperature difference <0.05%

Zero and Span Adjustment

+10% nominal (wider spans are available)

Turn on Time Less than 20 ms to 1% of final reading

Model Input Protection

TR48RU PT100

Safe AreaTR48RD 2 x PT100

TR48TCU Thermocouple

TR48SWU Slidewire

TR48R PT100

EExia Intrinsic Safety

TR48RD 2 x PT100

TR48TC Thermocouple

TR48SW Slidewire

Accuracy

Repeatability ±0.05% of span

Hysteresis ±0.02% of span

Stability ±0.02% of span

Ambient Temperature Effect (per ºC change)

Zero < ±0.01% of span

Span ±0.01% of span

CJC (TC only) ±0.01ºC/ºC

Long Term Drift < ±0.1% of span/year

Power Supply 7.5 to 36 VDC

Power Supply Effect< ±0.01% of span/Volt change

Output Ripple < 0.04% of span RMS

CMMR -110 db

Sensor Lead Resistance Effect (RTD)

< ±0.001% of span per Ohm. Equal change in lead resistance.

Excitation Current 0.8 mA

Sensor Lead Resistance Effect (TC)

Up to 1000 Ohm lead resistance has nomeasurable effect

Input Impedance 10 G Ohm

Radio Frequency Interference Effect

CE conformity per EN50081-1(1992) and EN50082-1(1992) over the frequency range 20 MHz to 1000 MHz at a field strength of 10 V/metre

TR48 Ordering Information TR48 Performance

Note:All specifications measured at mid-scale unless otherwise specified


Model TR12 Digital Temperature Transmitters

Universally programmable for - RTDs - Thermocouples - Resistance - sensor - mV - sensor

Output linear to temperature with input signal from RTDs and ThermocouplesAnalog output 4 … 20 mA, invertible, 2 - wire designSignalling configurable for sensor burnout and sensor short circuitingEx class protection, intrinsically safe ATEX Approved

- EEx ia llC T4 / T5 / T6 - EExnA - EExd (when fitted in H70 connection head)

EMC Conformity per - EN 61326:1997/P1:1998/P2:2001 - NAMUR NE 21

Galvanic isolation100% Rh protection, moisture condensation permissibleIncreased ambient temperaturePC configurable, Windows® programmeCE Conformity

General Description

The digital temperature transmitter TR12 range is designed for universal industrial use.

Comprehensive configuration possibilities, for example, type of sensor, measuring range and error signalling, high accuracy, galvanic isolation and EMI protection character-ize these transmitters. The compact head mounting case fits in almost any DIN connecting head.

During configuration any one of 17 input signals can be selected. Measured temperatures are from - 200 °C up to + 2300 °C.

The following sensors can be connected:

RTDs per EN60751, JIS C 1606, DIN 43 760 in 2, 3 and 4 - lead connection, the connection system used is configurable and ensures an optimal lead wire com-pensationThermocouples per IEC 584 , DIN 43 710 and ASTM E988. Cold junction compensation (CJC) is built-in, the use of an external CJC is selectable via configura-tion.

•

•

Resistance-sensors up to 5 k W in 2 - , 3 - and 4 - lead connection, configurable compensation of the connec-tion cable mV-sensors up to 800 mV

Configuration is carried out by means of a standard DOS PC using the Configuration set. With the Configuration Software the required parameters are defined. Data to the TR12 is down-loaded using a Communication-Interface (Programming Unit). The bi-directional communication enables display of the measured values on the PC.

Configuration can be effected whilst the transmitter is mounted in the field. The Communication-Interface has an integral isolation barrier which allows configuration whilst the transmitter is within hazardous areas, and acts to pro-tect the PC. Configuration sets are available as an optional extra.

The transmitters are delivered with any customized con-figuration within the given limits.

•

•

Model TR12 Digital Temperature Transmitter

TR12 Dimensions Load Diagram

Model TR12 Din Rail Mounting Temperature Transmitters

Universally programmable for - RTDs - Thermocouples - Resistance - sensor - mV - sensor

Output linear to temperature with input signal from RTDs and ThermocouplesAnalog output 4 … 20 mA, invertible, 2 - wire designSignalling configurable for sensor burnout and sensor short circuitingEx class protection, intrinsically safe, ATEX approved

- EEx ia llC T4 / T5 / T6EMC Conformity per

- DIN EN 50 081-1 - DIN EN 50 082-2 - NAMUR NE 21

Isolation voltage 1500 VAC between sensor and current loopPC - configurable, Windows® programmeCE Conformity

General Description

The digital temperature transmitter TR12 range is designed for universal industrial use.

Comprehensive configuration possibilities, for example, type of sensor, measuring range and error signalling, high accuracy, galvanic isolation and EMI protection character-ize these transmitters. The rail mounting case fits to any standard rail per DIN EN 50 022-35.

During configuration any one of 17 input signals can be selected. Measured temperatures are from - 200 °C up to + 2300 °C. The following sensors can be connected:

RTDs per DIN IEC 751 resp. DIN 43 760 in 2 - , 3 - and 4 - lead connection, the connection system used is configurable and ensures an optimal lead wire com-pensationThermocouples per IEC 584 , DIN 43 710 and ASTM E988 Cold junction compensation (CJC) is built-in, the use of an external CJC is selectable via configura-tion.

•

•

Resistance sensors up to 5 k W in 2 - , 3 - and 4 - lead connection, configurable compensation of the connec-tion cable mV-sensors up to 800 mV

Configuration is carried out by means of a standard DOS PC using the Configuration set. With the Configuration Software the required parameters are defined. Data to the TR12 is down-loaded using a Communication-Interface (Programming Unit). The bi-directional communication enables display of the measured values on the PC.

Configuration can be effected whilst the transmitter is mounted in the field. The communications interface has an integral isolation barrier which allows configuration whilst the transmitter is within hazardous areas, and acts to pro-tect the PC. Configuration sets are available as an optional extra.


•

•


TR12 Din Rail Mounting Version Dimensions Load Diagram


TR12 Wiring Scheme

TR12 Designation of Terminal Connectors


TR12 (DIN Rail Mounted Version) Designation of Terminal Connectors


TR12 - Input Types

Sensor Type Max. Measuring Range Min Measuring Span(1)

RTD PT 100 EN60751 -200 to +850°C 25 K

JPt 100 JIS C 1606 -200 to +500°C 25 K

Ni 100 DIN 43760 : 1987-09 -60 to +500°C 25 K

Thermocouple Type T Cu-CuNi IEC 584 -200 to +400°C 50 K

Type E NiCr-CuNi IEC 584 -100 to +1000°C 50 K

Type J Fe-CuNi IEC 584 -100 to +1200°C 50 K

Type L Fe-CuNi DIN 43710 : 1985-12 -100 to +900°C 50 K

Type K NiCr-Ni IEC 584 -180 to +1372°C 50 K

Type N NiCrSi-NiSi IEC 584 -180 to +1300°C 100 K

Type U Cu-CuNi DIN 43710 : 1985-12 -200 to +600°C 75 K

Type R PtRh-Pt IEC 584 -50 to +1760°C 200 K

Type S PtRh-Pt IEC 584 -50 to +1760°C 200 K

Type B PtRh-PtRh IEC 584 +400 to +1820°C(2) 200 K

Type W3, W3Re/W25Re ASTM E988 0 to +2300°C 200 K

Type W5, W5Re/W26Re ASTM E988 0 to +2300°C 200 K

Resistance Sensor 0 to +5 kOhm 30 Ohm

mV Sensor -10 to +800 mV 5 mV

RTD/Resistance Sensor Measuring deviation per DIN IEC 770, 23ºC ±5K

RTD ± 0.2 K or (3) ±(0.025% FS + 0.1) K

Resistance Sensor ± 0.07 W or (3) ± 0.03% FS in W

Sensor current Approx. 0.2 mA

Temperature coefficient Tc

RTD ± (0.025% FS + 0.09) K/10 K Tamb

Resistance Sensor ± (0.025% FS + 0.01) W / 10 K Tamb

Lead wire connection Configurable: 2=lead, 3-lead, 4-lead

Connection LeadsMax. resistance 30 W each lead, 3-lead symmetric

Effect ±0.02 W / 10 W

Signalling of sensor error Configurable

Thermocouple Measuring deviation(4) per DIN IEC 770, 23ºC ± 5K ± 0.5 K or (3) ± 10 mV or (3) ±0.05%

Cold junction compensation ± 1.0 K


T, E, J, L, K, N, U ± (0.05% FS + 0.1) K 10 K Tambor (3) ± 0.5 K / 10 K Tamb

R, S, B, W3, W5 ± 2 K / 10 K Tamb

Connection LeadsMax. resistance 250 W

Effect ± 0.5 uV / 10 W


mV Sensor Measuring deviation per DIN IEC 770, 23ºC ± 5K ± 10 mV or (3) ± 0.05% FS in mV

Temperature coefficient Tc± (0.05% FS + 0.02) mV / 10 K Tamb

Connection LeadsMax. resistance 250 W

Effect ± 0.5 mV / 10 W

TR12 - Input Specification

RTD Linear to temperature per EN60751 / JIS C 1606 / DIN 43 760 : 1987-09

Thermocouple Linear to temperature per DIN IEC 584 / DIN 43 710 : 1985-12 / ASTM E988

Simulation Mode Independant from input signal, simulation value configurable from 3.5 mA up to 23 mA

Output Limits Application specification Configurable from 3.6 mA up to 21.5 mA

NAMUR NE 43 Lower limit: 3.8 mA upper limit: 20.5 mA

Not active Lower limit: 3.6 mA upper limit: 21.5 mA

Load RA RA < (UB - 9V) / 0.023 A with RA in Ohm and UB in Volt

Load effect < ± 0.01% of measuring span / 100 W

Measuring deviation per DIN IEC 770, 23º, ± 5 K < ± 0.05% or measuring span

Temperature coefficient < ± 0.1 % of measuring span / 10 K Tamb

Damping Configurable: minimal 0.5 s , 1 s up to 60 s

Measured value update Approx. 2/s

Power supply effect < 0.005 % of measuring span / V

TR12 - Output Specification


TR12 - Power Supply UB

Model TR12 without Ex-protection DC 9 … 36 V

Model TR12 with Ex-protection DC 9 … 30 V

Protection EC Type Test DMT 00 ATEX E014X

Model TR12.10.002 II 1G EEx ia IIB / IIC T4/T5/T6

Model TR12.10.004 EExnA IIC T4/T5/T6

Permissible ambient temperature -20 °C … +70 °C with T4-20 °C … +70 °C with T5-20 °C … +60 °C with T6

Maximum values for connection of the sensor circuit (connections + and -)

Ui = 30V Ii = 100mA Pi = 705mW Li = 0.65mH Ci = 25nF

Maximum values for connection of the sensor circuit (connections 1- 4)

UO = 11.5V IO = 31mA PO = 87mW Li = 0.65mH CI = 125nF

Group IIB: CO = 11 mF LO = 8.6mH

Group IIC: CO = 1.5 mF LO = 8.6mH

TR12 - Signalling - analogue output with sensor error or internal malfunction

Substitue value Configurable from 3.5 mA up to 23.0 mA

Up-scale NAMUR NE 43 > 21.0 mA

Down-scale NAMUR NE 43 < 3.6 mA

TR12 - Case for head mounting

Material Plastic

Cross section of terminal connections max. 1.5 mm2, screws captive

Weight Approx. 70 g

Dimensions see drawings (page 10)

TR12 - Special Features

Isolation Voltage (input versus analog output) 1500 VAC, 60 s

Electric protection Protected against reverse polarity

Ambient andstorage temperature

Standard -40 … +85 °C

Optional Min. -50 °C max. +105 °C

Humidity 100 % relative humidity (unlimited with isolated sensor connection wires), moisture condensation permissible IEC 68 2-30 Var. 2

Vibration 10 … 2000 Hz 5 g DIN IEC 68 2-6

Shock DIN IEC 68 2-27 gN = 30

Salt fog DIN IEC 68 2-11

Configuration and calibration data Permanently stored in EEPROM

Self-monitoring Automatic execution of initial test after connection to power supply, thereafter monitoring due to internal malfunction

Warm-up time Approx. 5 Min.

Power consumption with UB 24 V Max. 552 mW

Electromagnetic Compatibility EMC Directive 89/336/EEC. EN61326:1997/A1:1998/A2:2001

Communication-interface Programming Unit (part of the configuration-set available as an accessory)

Guarantee 5 years when used within standard ambient range. Rototherm standard terms of warranty apply.

1) Beginning of measuring range maximum 50% of end of measuring range2) Technical data only valid only for configured measuring range > 400ºC3) Whichever is greater4) Valid only for configured measuring range beginning > -150ºC

TR12 - Case for rail mounting per DIN EN 50 022-35

Material Plastic

Degree of protection Case IP56 IEC 529 / EN 60529

Terminal Connections IP20 IEC 529 / EN 60529

Cross section of terminal connections 0.25 mm2 up to 2.5 mm2

Weight Max. 0.2 kg


FS - full scale value of configured measuring rangeUB - loop power supply voltage, see power supplyRA - loadTC - temperature coefficientTamb - ambient temperature

TR12 - Total Measuring Deviation

Sum of input and output per DIN IEC 770, 23ºC ±5K



HART® ProtocolATEX ApprovedUniversally programmable for

- RTDs - Thermocouples - Resistance - sensor - mV - sensor

Output linear to temperature with input signal from RTDs and ThermocouplesCustom specific linearisation with max. 32 points for sensors with W or mV outputAnalog output 4 … 20 mA, invertible, 2 - wire designSignalling individually configurable for possible er-rors of the sensor system Ex class protection, intrinsically safe

- EEx ia IIB / llC T4 / T5 / T6 - EExnA - EExd (when fitted in H70 connection head)

EMC Conformity per - EN 61326:1997/A1:1998/A2:2001 - NAMUR NE 21

Isolation voltage 1500 VAC between sensor and current loop100 % Rh protection, moisture condensation permissibleIncreased ambient temperatureConfigurable via

- HART® Communicator - PC Windows®-programme

Terminal connections with captive screwsCE Conformity

General Description

The TR32 digital temperature transmitter is designed for universal use in the process industry.

Comprehensive individual configuration properties, for example, type of sensor, measuring range and error sig-nalling, high accuracy, galvanic isolation and excellent EMI protection characterize these transmitters. The compact head mounting case fits in almost any DIN connecting head.

During configuration, by means of a HART communicator model 275 or an FSK modem (eg VIATOR) via the RS 232-C on a standard DOS PC, any one of 15 types of sensor can be selected. Measured temperatures are from -270ºC up to 1820ºC.


The following sensors can be connected:

RTDs per EN 60 751 resp. DIN 43 760 in 2 - , 3 - and 4 - lead connection, the connection-system used is con-figurable and ensures an optimal lead wire compensa-tionThermocouples per IEC 584 , DIN 43 710 and ASTM E988 Cold junction compensation (CJC) is built-in, the use of an external CJC is selectable via configuration. Resistance-sensors up to 5 k W in 2 - , 3 - and 4 - lead connection, configurable compensation of the connection cable

mV-sensors up to 1200 mV

•

•

•

•


TR32 Dimensions


TR32 Wiring Scheme

Ω Ω

250 Ω



TR32 - Input Types

Sensor Type Max. Measuring Range Min Measuring Span(1)

RTD PT 100 EN60751 -200 to +850°C (1)

10 K or 3.8 W whichever is greater

JPt 100 JIS Z 8710 -200 to +500°C

Ni 100 DIN 43760 : 1987-09 -60 to +250°C

Thermocouple Type T Cu-CuNi IEC 584 -270 to +400°C

50 K or 2 mVwhichever is greater

Type E NiCr-CuNi IEC 584 -270 to +1000°C

Type J Fe-CuNi IEC 584 -210 to +1200°C

Type L Fe-CuNi DIN 43710 : 1985-12 -200 to +900°C

Type K NiCr-Ni IEC 584 -270 to +1372°C

Type N NiCrSi-NiSi IEC 584 -270 to +1300°C

Type U Cu-CuNi DIN 43710 : 1985-12 -200 to +600°C

Type R PtRh-Pt IEC 584 -50 to +1768°C

Type S PtRh-Pt IEC 584 -50 to +1768°C

Type B PtRh-PtRh IEC 584 0 to +1820°C

Resistance Sensor 0 to 700 W / 5000 W 4 W / 32 W

mV Sensor -400 to +1200 mV 2 mV up to 32 mV

RTD/Resistance SensorMeasuring deviation per DIN IEC 770, 23ºC ±5K

RTD ± 0.08 K

Resistance Sensor ± 0.03 W or ± 0.006% FS in W whichever is greater

Sensor current Approx. 0.2 mA


RTD ± (0.02% FS + 0.09) K/10 K Tamb

Resistance Sensor ± (0.02% FS + 0.01) K / 10 W Tamb

Lead wire connection Configurable: 2, 3 or 4 lead

Connection LeadsMax permissible resistance 30 W each lead, 3-lead symmetric

Effect ±0.02 W / 10 W


Thermocouple Measuring deviation(2) per DIN IEC 770, 23ºC ± 5K ± 0.3 K or ± 5 mV whichever is greater

Cold junction compensation at 23ºC ± 5K ± 0.8 K

Temperature coefficient Tc of cold junction compensation ± 0.1 K / 10 K Tamb


Type T, E, J, L, K, N, U ± (0.03% FS + 0.07) K / 10 K Tamb

R, S, B ± (0.03% FS + 0.40) K / 10 K Tamb

Connection LeadsMax permissible resistance 250 W



mV Sensor Measuring deviation per DIN IEC 770, 23ºC ± 5K± 5 mV or) ± 0.006% FS in mV whichever is greater

Temperature coefficient Tc ± (0.03% FS + 0.002) mV / 10 K Tamb

Connection LeadsMax permissible resistance 250 W


TR32 - Input Specification

RTD Linear to temperature per EN60751 / DIN 43 760 : 1987-09

Thermocouple Linear to temperature per DIN IEC 584 / DIN 43 710 : 1985-12

Simulation Mode Independent from signal, simulation value configurable from 3.5mA up to 22.5mA

Output Limits Application specification Lower limit: from 3.6 mA to 4.0 mA Upper limit: from 20.0 mA to 21.5 mA

NAMUR NE 43 Lower limit: 3.8 mA upper limit: 20.5 mA

Not active Lower limit: 3.6 mA upper limit: 21.5 mA

Load RA RA < (UB - 12V) / 0.022 A with RA in W and UB in V

Load effect No measurable effect

Measuring deviation per DIN IEC 770, 23º, ± 5 K < ± 0.04% or measuring span

Temperature coefficient ± 0.1 % of measuring span / 10 K Tamb

Damping Configurable: minimum 0.5 s , 1 s up to 60 s

Measured value update Approx. 3/s

Power supply effect No measurable effect

TR32 - Output Specification


TR32 - Power Supply UB

Model TR32 without Ex-protection DC 12 … 42 V

Model TR32 with Ex-protection DC 12 … 30 V

Input power supply protection Reverse polarity

Protection EC Type Test DMT 00 ATEX E015X

Model TR32.10.002 II 1G EEx ia IIB / IIC T4/T5/T6

Model TR32.10.004 EExnA IIC T4/T5/T6

Permissable ambient temperatures-50 °C … +85 °C with T4-50 °C … +75 °C with T5-50 °C … +60 °C with T6

Maximum values for connection of the current loop circuit (connections +/-)

Ui = 30V Ii = 130mA Pi = 800mW Li = 100mH Ci = 7.8nF

Maximum values for connection of the sensor circuit (connections 1- 4)

UO = 11.5V IO = 5.2mA PO = 15mW

Group IIB: CO = 11 mF LO = 1mH

Group IIC: CO = 1.6 mF LO = 1mH

TR32 - Signalling - analogue output with sensor error or internal malfunction

NAMUR NE 43Up-scale > 21.0 mA

Down-scale < 3.6 mA

ConfigurableUp-scale 12 mA up to 22.5 mA

Down-scale 3.5 mA up to 12 mA

TR32 - Case

Material Plastic

Degree of protection Case IP66 EN 60529 / IE 529

Terminal connections IP00 EN 60529 / IE 529

Cross section of terminal connections max. 1.5 mm2, screws captive

Weight Approx. 70 g


TR32 - Special Features

Isolation voltage (input versus analogue output) 1500 VAC, 60s

Ambient andstorage temperature

Standard -40 … +85 °C

Optional -50 °C... +105 °C (1)

Climate application class GPA DIN 40040

Maximum permissable humidity 100 % relative humidity (unlimited with isolated sensor connection wires), moisture condensation permissible DIN IEC 68 2-30 Var. 2

Vibration 10 … 2000 Hz 5g DIN IEC 68 2-6

Shock DIN IEC 68 2-27 gN = 30

Salt fog DIN IEC 68 2-11


Testing current to monitor sensor nom. 1 mA during testing cycle, otherwise 0 mA

Self-monitoring Automatic execution of initial test after connection to power supply, thereafter monitoring due to internal malfunction

Warm-up time Approx. 5 Min.

Communication HART® protocol

Guarantee 5 years when used within standard ambient range. Rototherm standard terms of warranty apply.

1) Increased up to 1000ºC2) Valid only for configured measuring range beginning > -150ºC

FS - full scale value of configured measuring rangeRA - loadTC - temperature coefficientTamb - ambient temperature

TR32 - Electromagnetic Compatibility

CE – Conformity per EMC Directive 89/336/EEC. EN61326:1997/A1: 1998/A2:2001

TR32 - Total Measuring Deviation

Sum of input and output per DIN IEC 770, 23ºC ±5K



Configurable with Windows® PC without sensor simulationAnalogue signal processing, ideal for multiplex systemsQuick response <1 ms to 90%Sensor burnout signalling according to NAMUR NE 43Electromagnetic compatibility according to NAMUR NE 21Measuring span from 20 KCompact design

General Description

Temperature transmitter for Pt100 in 2 or 3 wire connec-tion with 4...20mA analogue output (loop powered 2 wire technique)

The TR24 temperature transmitter combines the known quick response of an analogue transmitter with the flex-ibility of configuration by means of a Windows PC.

The quick stabilisation of the output current after excita-tion voltage has been applied enables the use of this trans-mitter in multiplex systems.

Setting of the measuring range, type of sensor and sensor burnout behavior takes only a matter of seconds thanks to the easy to use Windows configuration software. Timeconsuming adjustments and sensor simulation are not re-quired for this transmitter.

The TR24 can be remotely configured from the control room via the current loop. Possible measuring errors which might for example, result from poor thermometer position, can be compensated by means of the function ‘sensor correction’.

Write protection and an increased ambient temperatures range complete the spectrum of features offered by the


Due to its flexibility and reliability the TR24 temperature transmitter is suited for a wide range of applications in the machine industry and plant construction.

As a result of its extremely compact design this TR24 tem-perature transmitter can be fitted into any DIN connection head of form B.

The transmitters are delivered with a basic configuration. Alternatively, upon request, transmitters can be delivered with a customized configuration within the given limits.

TR24 Dimensions



TR24 Connection of Programming Unit



TR24 - Specifications

Input Measuring range configurable with Windows® PC

Model TR24 Pt100 DIN EN 60 751 2 wire, 3 wire

Measuring range maximum TR24 -150ºC...+850ºC

Measuring span TR24 minimum 20 K

Inital value of measuring range, configurable TR24 -150ºC...+150ºC

Basic configuration 3 wire 0...150ºC

Sensor current approx. 0.5 mA

Connection leads Effect ±0.2 K / 10 W each wire (1)

Permissable load resistance 30 W each wire, 3 wire symmetric

Analogue Output 4...20 mA, 2 wire design

Measuring deviation per DIN EN 60770, 23ºC ±5K ±0.2% (2)

Linearization Linear to temperature per DIN EN 60751

Linearity error ±0.1% (3)

Temperature coefficient TK

zero ±0.1% / 10 KTa or (4) ±0.15K/10 KTa

span ±0.15% / 10 KTa

Rising time t90 < 1ms

Switch-on delay, electric < 10 ms

Signalling sensor burnout Configurable NAMUR downscale < 3.6mA (typical 3 mA) (5)

Configurable NAMUR upscale > 21.0 mA (typical 23 mA)

sensor short circuit Not configurable, in general NAMUR downscale < 3.6mA (typical 3 mA) (5)

Load RA RA < (UB - 10V) / 0.022A with RA in W and UB in V

Load effect ± 0.05% / 100 W

Power supply effect ±0.025% / V

Power Supply By the 4...20mA-loop

Model TR24 (without Ex-protection) DC 10....36 V

Input power supply protection Reverse polarity

Max. permissible ripple 10 with 24V / maximum load 300 W

Electromagnetic Compatibility (EMC) per EMC Directive 89/336/EWG DIN EN 61 326:2002 and additional NAMUR NE 21 (August 98)

Ambient Conditions

Ambient and storage temperatures Standard range -40 to +85ºCExtended range (option): -50 to +85ºC or -40 to +105ºC (6)

Climate class Cx(-40 to +85ºC, 5% up to 95% relative humidity) DIN EN 60 654-1

Maximum permissible humidity 100% relative humidity, mositure condensation permissible DIN EN 60068-2-30 Var. 2

Vibration 10 to 2000 Hz 10g DIN EN 60 068-2-6

Shock DIN EN 60 068-2-27

Salt fog DIN EN 60 068-2-11

Load Diagram

The permissible load is dependent upon the loop powersupply voltage

load

RA in

W

voltage UB in V

No. 1 No. 2 No. 3

Specifications in % refers to the measuring span.RA LoadTa ambient temperatureTC temperature coefficientUB loop power supply voltage, see power supply

Wire Number:


Special features

Temperature units Configurable: ºC, ºF, K

Resistance Sensor Linear resistance sensors are connectable

Sensor connection Configurable: 3 wire or 2 wireconfigurable compensation of lead resistance with 2 wire connection

Info data TAG-N0., descriptor and Message via configuration storeable in transmitter


Case Head Mounting design, including spring loaded mounting screws

Material Plastic, PBT, glass fibre reinforced

Ingress protection case IP 50 IEX 529 / EN 60 529

terminal connections IP 00 IEX 529 / EN 60 529

Cross section of terminal connectors 0.14 to 1.5 mm2

Weight Approx. 0.04 kg

Dimensions See drawings on page 19

(1) For 3 wire sensor connection, with 2 wire connection a total lead resistance up to 20 W is compensatable, otherwise the lead resistance causes additional error(2) For measuring span lower than 50K additional: 0.1 K For measuring span higher than 550K additional: 0.1%(3) ±0.2% with measuring ranges with initial value lower than 0ºC or measuring span higher than 800K(4) Whichever is greater between the standard range of ambient temperature -40ºC <Ta<±+85ºC, with option “extended range of ambient temperature” the double value is valid outside the standard range(5) Temperature value, in case of short between wire no. 2 and no. 3 (operation of sensor in 2 wire connection)(6) -40 to +105ºC only without EX-protection




Product data sheets



www.thermocouple.co.uk


Model DLI1 Loop Powered Indicator

Loop poweredLess than 1V required from loopATEX approved for us in IS loopsIP68 enclosure availableField programmableWide range of Zero offsetsRFI protected12.5mm high displayOperating temperature -10 to +70ºCLow cost

General Description

Model DLI1 is a loop powered digital indicator, which can be connected in series with any 4-20mA current loop and will display the current flowing in meaningful engineering units.

The large 3 ½ digit display is easy to read and the whole device introduces a volt drop of less than 1V at full scale, which means it can be used where several other devices are already in the loop.

The Zero and span are independently adjustable so the indicator can be can be calibrated to display any range within the +/-1999 range, large positive and negative zero offsets are easily accommodated.

Housings

The indicator can be supplied in an EEx de approved, IP68 enclosure in a variety of materials to suit the needs of the environment in which it is installed. Extended versions al-low a transmitter and indicator to be conveniently mount-ed as a single unit.

Specification

Input 4-20 mA 2 wire

Display 3.5 digit LCD. Height 12.5 mm

Volt Drop Less than 1V at 20mA

Overrange ±200mA without damage

Rangeability Zero can be set between -1300 & +1999Span is fully adjustable ±1999Method, by DIP switches and multi-turn potentiometers

Decimal Point Selectable by DIP switch

Accuracy ±1 digit

Ambient Temp -10 to +70ºC

Intrinsic Safety

DLI 1 is available ATEX approved II 1G EExia IIC T5.Certificate numbers:BAS 00 ATEX 1161X (component applications)BAS 00 ATEX 1160X (when fitted in H70 connection head)

TM

Dimensions

Connection Diagram

Model DLI1 Loop Powered Indicator


Non-Enclosed Unit Certificate No: BAS00ATEX1161X

To comply with the requirements of Intrinsic Safety, the “Component Certified” version of model DLI 1 MUST be housed in an enclosure providing a minimum degree of protection of IP20. When an end user wishes to house the unit in any enclosure other than the H70 below, the new assembly MUST be submitted to the “Health & Safety Executive” for re-certification.

The current loop MUST be protected by a Certified “Zener Barrier” or “Isolating IS Interface Unit”, with the following maximum output parameters:

Io = 200mA, Po = 0.85W, Uo = 28V.

Non-metallic enclosures must have a surface resistance of less than 1G Ohm, light alloy or zirconium enclosures must be protected from impact or friction when installed.

The housing chosen must be made from materials capa-ble of resisting any anticipated extremes of temperature, and shall not be corroded or prematurely aged by the at-mospheric conditions it could reasonably be expected to encounter in service.

The complete electrical circuit in the hazardous area MUST be capable of withstanding an AC test voltage of 500V RMS to earth or frame of the apparatus.

The capacitance and either the inductance, or the induct-ance to resistance (L/R) ratio of the cables in the hazard-ous area MUST NOT exceed the parameters specified in the schedule of the chosen safety barrier certificate, and/or system certificate.

Installation MUST comply with the requirements specified in BSEN 60079-14:2003.

Where there is a possibility of attack by aggressive sub-stances it must be protected by a suitable enclosure, ca-pable of protecting it from the environment and the effects of impact, thermal or mechanical stress. DLI 1 units must not be fitted in locations where the ambient temperature could be expected to exceed 70ºC (50ºC for enclosed unit).

This equipment is designed and manufactured to protect against other hazards as defined in paragraph 1.2.7 of An-nex II of the ATEX Directive 94/9/EC.

Enclosed Unit Certificate No: BAS00 ATEX 1160X

The “Enclosed” version is fitted inside the model “H70” explosion proof enclosure, which is specifically designed for this purpose. Providing protection to IP68, the housing is available in Stainless Steel, Cast Iron or Aluminium. The enclosure is fitted with a window to allow viewing of the display. The explosion proof enclosure DOES NOT mean that it can be used without a suitable IS barrier, except where the entire installation is certified EExde.

Installation / Safety

The enclosure can also contain any of the “ATEX” certified transmitters listed in BASEEFA approved document.

“O Ring” seals must be carefully examined after opening to ensure that the IP68 protection is maintained. Damaged seals MUST be replaced.

Operation

The indicator is designed to connect in series with a 4-20mA current loop, drawing its power from the loop, (Volt-age drop only 1V), and converting the current flowing into meaningful engineering units.Connection is by a pair of terminals mounted on the rear of the device, the 4-20mA loop should be broken and the indicator connected in series, taking care to observe cor-rect polarity. The indicator is protected against reversed connections, but no reading will be displayed if incorrect. Connecting directly across a 24V supply without a trans-mitter or similar device to regulate the loop current will result in a blown fuse, or damage to either the power sup-ply or the safety barrier.

Model DLI 1 can easily be ranged to display virtually any engineering units by a combination of the “Zero Offset” DIP switches mounted on the rear PCB, and a pair of coarse and fine “Span Adjustment” potentiometers acces-sible from the front, above the display.

The decimal point can be activated by means of another DIP switch on the rear PCB.

H70 Connection Head


Zero Offset

The vast majority of ranges will begin at Zero, the standard indicator is supplied with switches 3 & 7 closed, the set-ting for Zero offset.

Once Zero has been set, using the “Z” potentiometer, it will NOT change regardless of the full scale selected.

This default switch combination also allows offsets of ap-proximately 500 to +250 counts (-50.0 or 500 to +25.0 or +250)

For larger positive or negative offsets choose a suitable switch combination from the table below.

Offset 1 2 3 4 5 6 7 8

+1000 to

+2000On On

+250 to

+1000On On

-500to

+250On On

-1300to

-500On On

Span Adjustment

Span is set by adjusting a combination of 2 potentiom-eters, first adjust the “C” pot until close to the required full scale reading, then fine tune with the “F”, fine adjust-ment pot.

Offset Ranges

The method for setting offset ranges is as follows, FIRST set the span required, e.g., for a range of +100 to +500 set a range of 0-400, THEN offset the bottom end by +100, no further adjustment will be required.

Decimal Point

If required, the decimal point can be activated by switch-ing either of the DIP switches labelled “DP” at the bottom of the rear circuit board.

Maintenance

Model DLI 1 is maintenance free; the electronics are fully encapsulated and cannot be disassembled.

Cleaning should ONLY be restricted to wiping with a damp cloth, or approved anti-static cleaner to avoid the danger of ignition due to electrostatic charges.

Range Setting Instructions

Enclosed Unit

Certification Details

Non-Enclosed Unit

Transmitter Labelling

When the enclosure also contains an Intrinsically safe tem-perature transmitter, a label must be fitted to the outside detailing the model and certification numbers of the trans-mitter.

A list of permissible transmitters and their certification de-tails contained in BASEEFA approved document.

Digital Thermometers & Transmitters | 26

DigiTemp Digital Thermometers & Transmitters

DT1 General Purpose Digital Thermometers

The Rototherm DT1 is a micro processor based, battery oper-ated, continuous reading, type K thermocouple input digital ther-mometer. Two basic versions are available, both have clear four digit LCD displays with 12.7mm high characters and 1ºC/ºF reso-lution. 4/20mA signal re-transmis-sion and MAX / MIN temperature logging can also be incorporated - see OPTIONS for further details.

The DT1-1 is a 316 stainless steel rigid stem temperature indicator. The stem can be either 12.7mm or 6.35mm diameter with a reduced tip for fast response. The stem length and fitting, if required, can be user specified. The DT1-1 can

be mounted directly on to a pipe line or vessel where di-rect, local temperature indication is required.

The DT1-2 is a remote reading instrument, designed for mounting on a panel, either with a three hole front flange or a back flange for surface mounting. The indicator is connected to the sensor by a 3mm diameter stainless steel mineral insulated cable which can be fitted with a compression fitting if required.


DT2 High Accuracy Digital Thermometers

Using common construction to the DT1, the DT2 is a high accuracy, high resolution digital temperature indicator. The DT2 uses a precision three wire thin film PT1000 re-sistance element as a sensor and can be supplied in both rigid stem and remote reading variants. In common with the DT1 series the DT2 can be supplied with 4/20mA signal re-transmission and MAX / MIN temperature logging - see OPTIONS for further details.

The DT2 -1 is a rigid stem, direct mounted instrument for local indication, stem configurations are common with the DT1-1. A special derivative of this product is the DT2-3, this is fitted with a 12.7mm stem with a reduced tip and a captive 3/4” or 1” BSP hygienic fitting - primary applica-tion are Dairy, Brewing and Food Industries.

The DT2-2 enables the measuring instrument to be mount-ed remotely from the sensor and is available in two vari-ants with differing cable protection systems and sensor housings.

The standard instrument has a PTFE protected cable and a 6mm diameter, 50mm long stainless steel sensor housing. A cable gland can be supplied loose on the cable to enable a sealed connection to be made to tanks, pipes etc. Where cable protection is required 6mm diameter stainless steel armoured cable is available, the stainless steel sensor housing is 12.7mm diameter with a reduced tip, a standard compression fitting can be supplied either loose or captive on the housing.

Case Material 100mm (4”) diameter 304 stainless steel, back or bottom entry. IP67 / NEMA 4X ingress protection

Window Acrylic

Display 4 digit LCD with 12.7 mm (1/2”) high characters

Display Units ºC or ºF. User selectable.

Measurement Range DT1 -100 to 800ºC : 1ºC resolution / -150ºF to 1500ºF : 1ºF resolution

DT2 -50 to 200ºC : 0.1ºC resolution / -60 to 400ºF : 0.1ºF resolution

Sensor DT1 Type K (NiCr-Ni) Thermocouple

DT2 Three wire Pt1000 platinum resistance thermometer

Accuracy DT1 ±1ºC ±1 digit

DT2 ±0.2ºC ±1 digit

Display Update 0.5 seconds (no Tx version)

Temperature Stability DT1 Zero: +/- 0.05ºC per ºC ambient temperature change from 20ºC Span: +/- 0.01% of reading per ºC ambient temperature change from 20ºC

DT2 Zero : +/- 0.005ºC per ºC ambient temperature change. Span: +/- 0.003 % of reading per ºC ambient temperature change.

Operating Temperature -10 to 70ºC (14 to 160ºF)

Cold Junction Compensation Automatic:Error included in basic accuracy statement.

Linearisation DT1 +/- 1ºC / ºF

DT2 < +/- 0.05ºC

Protection Protected against reverse battery polarity.

EMC Immunity :BS EN 50081-1 : 1992Emissions: BS EN 50082 -2 : 1992

Batteries / Battery Life 2 x 1.5V Alkaline Manganese AA cells. 2 years, continuous operation

The addition to the range of an intrinsically safe version allows this product to be standardised in all Pharmaceu-tical and Petro Chemical industries. Both Thermocouple (DT1X) and RTD (DT2X) sensor instruments are offered.

ATEX Category:

II 1G EEx ia IIC T4 (-20ºC < Ta < +60ºC)

Max Min Temperature Logging Option

All Digitemps can be supplied with a maximum and minimum temperature logging facility. Information is held in memory and is accessed and cleared by a non-intrusive magnetic key.

Dimensions DT1 & DT2

ATEX Approved Intrinsically Safe Versions


Any non intrinsically safe DigiTemp variant can be supplied as a two wire 4/20mA indicating temperature transmitter. Operating from a two wire DC power supply, the DigiTemp Tx can be configured during set up to re-transmit a 4/20mA signal across either the full, or part of the instruments measurement range.

DigiTemp Tx. is supplied with a 2 metre long connecting cable. Retransmission range must be advised at the time of ordering.

Tx Specification

Loop Supply 12 to 32V DC

Connection 3 pole miniature M8 connector sealed to IP 68

Protection Reverse loop polarity protected.

Adjustments Multi-turn potentiometers for zero and span. Separate pairs of potentiometers for trimming of local indication and loop current.

EMC Immunity : BS EN 50082-2Emissions : BS EN 50081-2

DigiTemp TX Transmitter

132mm Dia

3 holes Ø 4.2 equispaced on 116 PCD

Ste

m le

ngt

h

112mm Dia 52mm

132mm Dia 55mm

3 holes Ø 4.8 equispaced on 115 PCD

4/20mA Loop Connector (on Tx version only)

Hygienic Fitting(option)

Sta

nd

off

lengt

h

Imm

ersi

on

len

gth

Stem diameter

Cable PatternPanel Mounted, Rear Entry

Cable PatternSurface Mounted, Bottom Entry

Rigid StemDirect Mounted, Bottom Entry

Mineral Insulated Thermocouples | 28

Mineral Insulated Thermocouples

Wide choice of Sheaths, Cold and Hot Ends and Conductor TypesApproval to Power Station StandardsStandard and Customised DesignsComputerised Calibration AvailableSpecial Tolerances to order

General Description

Our minerally insulated thermocouples are manufactured from superior grade materials. We are approved to manu-facture thermocouples to BS EN 61515. We provide tech-nical expertise, advice, design and a manufacturing facility second to none.

Thermocouple Types

Type Conductor materials Standard Tolerances

K Nickel-Chromium/Nickel-Aluminium

40ºC to 333ºC : ± 2.5ºC333ºC to 1200ºC : ± 0.75%

J Iron/Copper-Nickel

-40ºC to 333ºC : ± 2.5ºC333ºC to 750ºC : ± 0.75%

T Copper/Copper-Nickel

-40ºC to 133ºC : ± 1ºC133ºC to 350ºC : 0.75%

E Nickel-Chromium/Copper-Nickel

-40ºC to 333ºC : ± 2.5ºC333ºC to 900ºC : ± 0.75%

N Nickel-Chromium/SiNickel-Silicon

40ºC to 333ºC : ± 2.5ºC333ºC to 1200ºC : ± 0.75%

B Platinum-30%Rhodium/Platinum-6%Rhodium

0 to 600ºC : ± 1.5ºC600ºC to 1700ºC : ±0.25%

R Platinum-13%Rhodium/Platinum

0 to 600ºC : ± 1.5ºC600ºC to 1600ºC : ±0.25%

S Platinum-10%Rhodium/ Platinum

0 to 600ºC : ± 1.5ºC600ºC to 1600ºC : ±0.25%

Class 1 tolerances available to order

Applicable Standards

EMF ValuesBS EN 60584-1: 1996, IEC 60854:1195,Tables of EMF values are available on request.ManufactureBS EN 61515:1996

Colour CodesIEC 60584-3:1989, BS 4937-30:1993

TolerancesBS EN 60584-2:1193, IEC 60584-2:1982

Hot End Junctions

Insulated Junctions

Insulated hot end junctions are suitable for most appli-cations, especially where low EMF pick-up is essential. High insulation resistance is enhanced due to extreme compaction of the high purity MgO powder insulation.

Bonded Junction

Bonded or grounded junctions offer a slightly faster tem-perature response than the insulated junction type. Not recommended for multi-point instrumentation.

Exposed Junction

Bare or exposed junction thermocouples provide ex-tremely fast temperature response. Although the ex-posed MgO is completely moisture sealed, it is not rec-ommended for corrosive environments or temperatures in excess of 300ºC.

Extended Tip Junction

Extended tip junctions can also be provided to special or-der. Their solid end makes this type of construction ideal for spot welding or peening to the contact surface. The standard version has a pointed tip 15 mm long. Other shapes can be provided.

Reduced Tip Junction

Reduced tip junctions are ideal for applications where low mass and extremely fast response times are required, together with good mechanical strength. Reduced tip can be provided on 1.0 to 6.0 mm diameter thermocou-ples.

Sheaths and Conductors

A wide range of standard sheath materials are available, in-cluding 310 Stainless Steel, 321 Stainless Steel, Inconel® 600 and Cupro/Nickel. Thermocouple types J,T,K,E and N can be supplied as standard, in simplex, duplex, and in most cases triplex configurations

Thick Wall ThermocouplesInconel® 600 and 310 Stainless Steel sheaths are available in thick wall construction for both 5.5 mm and 10.8 mm outside diameters. Nominal wall thickness for 5.5 mm is 1.23 mm and for 10.8 mm is 2.51 mm. Thick wall ther-mocouples are intended for applications where improved mechanical or corrosion resistance is required.

Special SheathsSpecial sheaths are available including 446 Stainless Steel, 347 Stainless Steel, Nicrosil, Hastelloy® and Nuclear Grade 20/25 Cr/Ni Stainless Steel Grade AESS 10102.


Special ConductorsA wide range of special conductors are available including Platinum-Rhodium/Platinum, Platinel and Tungsten/Rhe-nium.

Special CoatingsA wide variety of fluoroplastic coatings can be provided to meet corrosive environments. Standard coatings include PPS, PVDF or PFA. Fluoroshield®, a fluorocarbon polymer, can also be provided.

Other FacilitiesPre-ageing for improved stability can be provided in ac-cordance with Power Station standards. Radiographic in-spection can also be provided on request. Thermocouples can still be produced which comply with the obsolete CEGB standards GDCG16, GDCD 244 and GOM 101.

The table below shows the sheath/conductor combina-tions which are the most common, and are readily avail-able from Thermocouple Instruments.

Type K - Nickel Chromium/Nickel Aluminium

Sheath MaterialOutside Diameter (mm)

10.8 8.0 6.0 5.5 4.5 3.0 2.0 1.5 1.0

310 Stainless Steel

Inconel® 600

321 Stainless Steel

Hastelloy® X

Type J - Iron/Copper-Nickel


10.8 8.0 6.0 5.5 4.5 3.0 2.0 1.5 1.0

321 Stainless Steel

Type T - Copper/Copper-Nickel


10.8 8.0 6.0 5.5 4.5 3.0 2.0 1.5 1.0

321 Stainless Steel

Cupro-Nickel

Type E - Nickel - Chromium/Copper-NickelSheath Material Outside Diameter (mm)

10.8 8.0 6.0 5.5 4.5 3.0 2.0 1.5 1.0

321 Stainless Steel

Type N - Nickel-Chromium-Silicon/Nickel-Silicon


10.8 8.0 6.0 5.5 4.5 3.0 2.0 1.5 1.0

Nicrobell® C

= Simplex

= DuplexFittings

A wide range of termination glands and adjustable compression fittings are available to suit thermocouples of all diameters (see page 51 for further details).

Mineral Insulated Thermocouples | 30

Cold End Terminations

Springloaded Terminal Blocks

Available as a high grade ATEX approved moulded Ryton block, or as general purpose ceramic version. Both ter-minal blocks can accommodate sheath sizes from 1.5 mm to 8.0 mm diameter, and can be fitted with up to eight terminals. The Ryton block is suitable for temperatures up to 260ºC, and when used in conjunction with an appropri-ate Thermocouple Instruments connection head, provides a complete assembly approved to ATEX EExde IIC. Both terminal blocks are fitted with 2 x M4 screws mounted on 33 mm centres.

Transmitter Baseplates

Thermocouples can be manufactured with DIN mounting plates to suit temperature transmitters. We can offer a full range of ATEX approved transmitters, from fixed range devices to HART® smart devices.

Moulded Plugs

The P4 plug is a standard round 2 pin moulded plug suit-able for 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm, 4.5 mm and 6.0 mm diameter thermocouples. Maximum ambient tempera-ture is 270ºC. A duplex version is also available.

The P3 plug is a miniature flat 2 pin moulded plug which can be fitted to 1.0 mm, 1.5 mm, 2.0 mm and 3.0 mm di-ameter thermocouples.

Both P3 and P4 can be supplied in socket end versions.An alternative range of high temperature plug and socket combinations is available with ceramic bodies.

Standard Seals

A wide variety of standard and custom designed seals can be manufactured to suit specific applications.

The C Pot is a stainless steel crimped-on epoxy resin seal, suitable for 2.0 mm, 3.0 mm, 4.5 mm, 5.5 mm, 6.0 mm and 8.0 mm diameter thermocouples. Maximum ambient temperature is 105ºC when fitted with PVC tail wires and 180ºC when fitted with PTFE tail wires and high tempera-ture epoxy. A high temperature glazed seal version is avail-able, with ceramic beaded tail wires, suitable for tempera-tures up to 350ºC.The PS1 Pot is a standard crimped-on stainless steel seal for 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm and 3.0 mm diameter thermocouples.

Thread Seals

The A Pot is an M8 threaded epoxy resin seal for 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm and 4.5 mm thermocou-ples.The B Pot is an M10 threaded epoxy resin seal for 3.0 mm, 4.5 mm, 5.5 mm, 6.0 mm, or 8.0 mm thermocouples.Locknuts can be supplied. Maximum ambient temperature is 105ºC when fitted with PVC tail wires and 180ºC when fitted with PTFE tail wires and high temperature epoxy.

Ryton Block

Transmitter Baseplate

P4 Plug

P3 Plug

C Pot

PS1 Pot

A Pot

B Pot

Thermocouple Material Selection Chart

T/C Type

Sheath Material Maximum Operating

Temperature

Typical Applications Remarks

K 310 Stainless Steel 1100ºC

Blast Furnace Gases, Open HearthFurnace Flues, Re-Heat and AnnealingFurnaces, Brick Kilns, Power StationBoilers, High Temperature Superheater Tubes, Vitreous enamelling.

Good oxidation resistance properties but should not be subjected to subsequent manipulation. Satisfactory in sulphur-bearing atmospheres.

K Inconel® 600 1100ºC

Heat Treatment Processes, ChemicalReactors, Annealing Furnaces – Trailing Thermocouples, Soaking Pits, Glass Tank Flues, Cement Kilns, Incinerators and Aircraft Engines.

Excellent high temperature strength and resistance to oxidation but should not be used in sulphur-bearing atmospheres above 550ºC.Very good chemical resistance, almost immune to chloride-ion stress cracking


Nuclear Energy ‘In-Pile’ Instrumentation,Annealing Furnaces, Chemical AcidProduction (Acetic, Nitric etc), BoilerSteam and Feed Water, Turbo-AlternatorSteam Measurement, Heat Exchangers.Food and Beverage Processing.

Excellent resistance to corrosion in a wide range of industrial applications, retaining good ductility properties.This grade is titanium stabilized forimproved welding characteristics.


Applications as 321SS, but with improvedresistance to a wide range of moreaggressive chemicals.Widely used in Paper Digesters.

Best corrosion resistance of the austenitic stainless steels, widely used in chemical processing, offers useful resistance to H2S, dry chlorine gas and sodium chloride.

E 321 Stainless Steel 800ºC

Annealing Furnaces, Chemical AcidProduction (Acetic, Nitric etc), High EMF output ideal for low temperaturesensitivity.

Excellent resistance to corrosion in a wide range of industrial applications, retaining good ductility properties.This grade is titanium stabilized for improved welding characteristics.

J Inconel® 600 800ºCPolyethylene Manufacture, Tar Stills,Paper Manufacturing Plant.

Excellent oxidation resistance, butshould not be used in sulphur-bearing atmospheres at temperatures above 550ºC.Very good chemical resistance, almost immune to chloride-ion stress cracking

J 321 Stainless Steel 750ºC

Re-heat and Annealing Furnaces,Aluminium Heat Treatment, ChemicalReactors, Plastic Injection MouldingMachines.

Excellent resistance to corrosion in awide range of industrial applications,retaining good ductility properties.This grade is titanium stabilized forimproved welding characteristics.

T 321 Stainless Steel 400ºC

Producer Gas Plant, Oil LubricantTemperature Measurement, widely used in Cryogenic applications.Type T thermocouples are more accurate than other base metal types.

Excellent resistance to corrosion in awide range of industrial applications,retaining good ductility properties.This grade is titanium stabilized for improved welding characteristics.

T Cupro-Nickel 400ºC

Chemical Acid Production (Sulphuric),Food Processing (Bread Ovens etc),Boiler Flue Gas at Stack, Turbo-Alternator-Condensers, GearboxBearings, Plastic Moulding, Sub-zeroTemperatures.

Excellent resistance to corrosiveenvironments, particularly under wetconditions.

N Nicrobell® 1300ºC

Blast Furnace Gases, Heat Treatment,Brick Kilns, Power Station Boilers,Nuclear ‘In-Pile’ Instrumentation,Semiconductor Manufacturing.

Lowest drift of the base metal thermocouple group, particularly good atextreme temperatures and nuclearapplications.Can replace expensive platinum types inSome applications.


Other combinations are available - please consult the Sales Office for further details

Mineral Insulated Resistance Thermometers | 32

Mineral Insulated Resistance Thermometers

High Accuracy and StabilityGood LinearityNo Compensating CableNo Cold Junction Compensation

General Description

Platinum Resistance Sensors offer the highest standard of accuracy and stability of any temperature sensor. They also exhibit good linear response, covering a temperature range from -200ºC to +650ºC. They are easy to apply and require no special cables or cold junction reference. Platinum resistance sensors are finding increasing favour in industry, where their high accuracy, repeatability and stability are vital. Our minerally insulated RTDs are man-ufactured from superior grade materials. In addition we provide technical expertise, advice, design and a manufac-turing facility second to none.

RTD Types

The following types of RTD are available:

PT100 - Platinum, 100W at 0ºC PT130 - Platinum, 130W at 0ºC PT1000 - Platinum, 1000W at 0ºC Cu100 - Copper, 100W at 0ºC Ni100 - Nickel, 100W at 0ºC

Applicable Standards

Resistance ValuesBS EN 60751:1996IEC 60751:1983JIS C1604:1997BS3G.148:1981Tables of resistance values for PT100 RTDs are available from Thermocouple Instruments/British Rototherm.

Values can also be obtained from the RTCalc computer program, which may be freely downloaded from our website: www.thermocouple.co.uk

ManufactureBS EN 60751:1996IEC 60751:1983

TolerancesBS EN 60751:1996IEC 60751:1983

Resistance Detectors

Resistance Thermometers

All our resistance detectors/elements are manufactured by RTD Products, a specialist division of Thermocouple Instruments/British Rototherm.

Detectors manufactured by RTD Products are of the par-tially supported wire-wound type. These offer the best available balance of accuracy, stability and ruggedness.

A wide range of sizes are available, down to as small as 0.75 mm diameter. Duplex windings are produced in several sizes.

Thermocouple Instruments Resistance Temperature De-tectors are capable of withstanding vibration and acceler-ation levels of up to 30g over the frequency range 10Hz to 1kHz. Detector accuracy will remain unaffected by large changes in pressure.

Detectors are available as standard in tolerance classes A and B. Closer tolerance devices, commonly known as 1/3, 1/5 or 1/10 DIN. These offer tolerances of 1/3, 1/5 or 1/10 of the class B figures. Tolerances for PT100 RTDs are shown overleaf.


Sheaths and Conductors

RTDs are available in 2, 3 or 4 wire configurations with a range of sheath materials and conductor materials.

Standard sheath materials include 316 Stainless Steel, 321 Stainless Steel and Inconel® 600. For high tempera-ture applications, a nickel sheath is preferred. Conductors are usually either copper or nickel.

The tables below show the most common sheath/conduc-tor combinations.

RTD - 2 Wire Configuration

Sheath materialOutside Diameter

3.0 4.5 6.0

316 Stainless steel

321 Stainless Steel

Inconel® 600



3.0 4.5 6.0

316 Stainless steel

321 Stainless Steel

Inconel® 600



3.0 4.5 6.0

316 Stainless steel

321 Stainless Steel

Inconel® 600

= Simplex = Duplex

High Temperature RTDs

At temperatures above 500ºC, the platinum wires used in the construction of RTD elements are susceptible to ‘poi-soning’ from a variety of sources. The result is rapid drift-ing of the reading, normally upwards. The most common causes are:-

The Sheath Material - iron vapour contamination effectively rules out the use of stainless steels and most nickel alloys. Pure nickel is the preferred material.

Oil and Grease - traces of oil left inside the protecting tube, or on the element itself, give off poisonous gases at high temperature. Absolute cleanliness is essential in RTD pro-duction.

Tolerances

Tolerances for PT100 Resistance Temperature Detectors are shown below in tabular and graphical format.

Tem

p º

C Tolerance

CLASS B CLASS A 1/3 DIN 1/5 DIN 1/10 DIN

±ºC ± W ±ºC ± W ±ºC ± W ±ºC ± W ±ºC ± W

-200 1.3 0.56 0.55 0.24 0.44 0.19 0.26 0.11 0.13 0.06

-100 0.8 0.32 0.35 0.14 0.27 0.11 0.16 0.06 0.08 0.03

0 0.3 0.12 0.15 0.06 0.10 0.04 0.06 0.02 0.03 0.01

100 0.8 0.30 0.35 0.13 0.27 0.10 0.16 0.05 0.08 0.03

200 1.3 0.48 0.55 0.20 0.44 0.16 0.26 0.10 0.13 0.05

300 1.8 0.64 0.75 0.27 0.60 0.21 0.36 0.13 --- ---

400 2.3 0.79 0.95 0.33 0.77 0.26 --- --- --- ---

500 2.8 0.93 1.15 0.38 --- --- --- --- --- ---

600 3.3 1.06 1.35 0.43 --- --- --- --- --- ---

650 3.6 1.13 1.45 0.46 --- --- --- --- --- ---

700 3.8 1.17 --- --- --- --- --- --- --- ---

800 4.3 1.26 --- --- --- --- --- --- --- ---

850 4.6 1.34 --- --- --- --- --- --- --- ---

Fittings

A wide range of termination glands and adjustable com-pression fittings are available to suit RTDs of all diame-ters.

Mineral Insulated Resistance Thermometers | 34

Cold End Terminations

Springloaded Terminal Blocks

Available as a high grade ATEX approved moulded Ryton® block, or as general purpose ceramic version. Both termi-nal blocks can accommodate sheath sizes from 3.0 mm to 6.0 mm diameter, and can be fitted with up to six termi-nals. The Ryton block is suitable for temperatures up to 260ºC, and when used in conjunction with an appropriate Thermocouple Instruments connection head, provides a complete assembly approved to ATEX EExde IIC.

Both terminal blocks are fitted with 2 x M4 screws mount-ed on 33 mm centres.


RTDs can be manufactured with DIN mounting plates to suit temperature transmitters. We can offer a full range of ATEX approved transmitters, from fixed range devices to HART® smart devices.

Moulded Plugs

The 3PS plug is a standard round pin moulded plug suit-able for 3.0 mm, 4.5 mm and 6.0 mm diameter RTDs. Max-imum ambient temperature is 270ºC. A duplex version is also available.

A miniature version is also available, with flat pins. Both standard and miniature connections can be supplied in socket end versions.

An alternative range of high temperature plug and socket combinations is available with ceramic bodies.

Standard Seals

A wide variety of standard and custom designed seals can be manufactured to suit specific applications.

The C Pot is a stainless steel crimped-on epoxy resin seal, suitable for 3.0 mm, 4.5 mm and 6.0 mm diameter RTDs. Maximum ambient temperature is 105ºC when fitted with PVC tail wires and 180ºC when fitted with PTFE tail wires and high temperature epoxy. A high temperature glazed seal version is available, with ceramic beaded tail wires, suitable for temperatures up to 350ºC.

The PS1 Pot is a standard crimped-on stainless steel seal for 3.0 mm diameter RTDs.

Threaded Seals

The A Pot is an M8 threaded epoxy resin seal for 3.0 mm and 4.5 mm RTDs.The B Pot is an M10 threaded epoxy resin seal for 3.0 mm, 4.5 mm and 6.0 mm, or 8.0 mm RTDs.

Locknuts can be supplied. Maximum ambient temperature is 105ºC when fitted with PVC tail wires and 180ºC when fitted with PTFE tail wires and high temperature epoxy.

Ryton Block


3PS Plug

C Pot

PS1 Pot

A Pot

B Pot


Wiring Configurations

2-Wire Connection

This method allows NO compensation for lead resistance, which is effectively added to the thermometer resistance.

Only suitable for low accuracy applications such as do-mestic appliances, motor vehicles or where lead lengths are very short.

Typically leads made from 7/0.2mm copper will add a posi-tive offset of almost 0.5ºC/m.

3-Wire connection

By far the most common configuration for industrial appli-cations, the 3-wire system allows for effective compensa-tion of lead resistance and also compensates for changes in lead resistance when wires pass through temperature variations (temperature coefficient of resistance of copper is greater than platinum).

Remaining errors with this system are mostly due to varia-tions in resistance between the 3 wires.

Wiring Configurations

4-Wire Connection

Must be used when the highest accuracy is needed, par-ticularly where lead runs are long, providing almost total rejection of lead resistance and temperature effects.

This system is becoming more common as “Intelligent Transmitters” become more popular, as these almost al-ways can use the 4-wire system.

Mineral insulated resistance sensors are becoming much more popular in recent years, for their robust, vibration resistant properties, these are normally made using 4 core MI cable, so there is no economic reason not to use all four.

4-Wire Compensated

An unusual system where a “Compensating Loop” of wire, equal in resistance to the thermometer leads is connect-ed to balance their effect. This is normally achieved in a bridge circuit, by connecting the loop in the opposite leg to the sensor.

The method can give good results, but is not commonly used with modern instrumentation.

Lagging Extensions | 36

Lagging Extensions

Range of MaterialsRange of LengthsRange of Sizes and Fittings

General Description

Lagging extensions are available in a wide range of lengths, sizes and fittings. Materials include Carbon Steel and Stainless Steel. They allow the connection head to be po-sitioned away from the heat source, or through insulating lagging.

Nipple/Union/Nipple and Breakaway couplings allow rapid disconnection for testing, and orientation.

Extension Lengths

The graph below indicates head temperature rise above local ambient for a thermometer and pocket assembly mounted horizontally in a vessel wall with no lagging.

1/2” 150lb (Welded) Nipple/Union/Nipple

Dimension L Material

100 mm

316 Stainless Steel150 mm

200 mm

1/2”150 lb (SCREWED) Nipple/Union/Nipple


100 mm

Galvanised Carbon Steel150 mm

200 mm

250 mm

1/2”3000 lb (SCREWED) Nipple/Union/Nipple


165 mm Carbon Steel(Black Epoxy Painted)

1/2”BSP PL to 1/2”BSP PL Extension Nipple


75 mm

316 Stainless Steel100 mm

150 mm

200 mm

75 mm

Galvanised Carbon Steel100 mm

150 mm

200 mm

75 mm

Carbon Steel100 mm

150 mm

200 mm

110 mm316 Stainless Steel

87 mm

Extension Nipple

Nipple Union Nipple


1/2”NPT to 1/2”NPT Extension Nipple


50 mm

316 Stainless Steel

75 mm

100 mm

150 mm

200 mm

50 mm

Galvanised Carbon Steel

75 mm

100 mm

150 mm

200 mm

50 mm

Carbon Steel

75 mm

100 mm

150 mm

200 mm

1/2”BSP PL to 1/2”NPT Extension Nipple


50 mm

316 Stainless Steel

75 mm

100 mm

150 mm

200 mm

50 mm

Galvanised Carbon Steel

75 mm

100 mm

150 mm

200 mm

50 mm

Carbon Steel

75 mm

100 mm

150 mm

200 mm

STAND/00/86/00032 Type 1 Extension


75 mmAlkathene

150 mm



75 mmCarbon Steel

150 mm



75 mmCarbon Steel

150 mm

75 mm316 Stainless Steel

150 mm

75 mmGalvanised Carbon Steel

150 mm

All d

imen

sions are in

mm

. Draw

ings are fo

r illustration

purp

oses o

nly

Thermowell Materials | 38

Thermowell Materials

Carbon SteelLow cost materials with little corrosion resistance. Used in low temperature and stress applications where the meas-ured medium protects it from corrosion, oils, petroleum, tars etc.Maximum temperature: 530ºC.

Chrome/Moly SteelsHigh strength steels used in pressure vessels and indus-trial boiler plant. Resistant to chloroform, cleaning agents, food products and carbon disulphide.Maximum temperature: 600ºC.

304 Stainless SteelLow cost corrosion resistant material, used extensively in food, beverage and chemical processing where good cor-rosion resistance is required. A low carbon grade, 304L is available which can be welded without impairing it’s cor-rosion resistance.Maximum temperature: 900ºC.

321 Stainless SteelSimilar properties to 304SS above, except that this gradeis titanium stabilized to prevent intergranular corrosion when welded.

316 Stainless SteelBest corrosion resistance of the austenitic stainless steels due to the addition of molybdenum, widely used in chemi-cal processing, offers useful resistance to H2S. As with 304, a low carbon grade, 316L is available for welded ap-plications.Maximum temperature: 900ºC.

310 Stainless SteelHeat resistant material, which can be used up to 1150ºCwith useful resistance in sulphur bearing atmospheres.Corrosion resistance is slightly better than 304SS, but not as good as 316SS. Can be welded with caution.

446 Stainless SteelFerritic stainless steel with excellent resistance to sulphur-ous atmospheres at high temperature, however due to its low strength at high temperature, thermowells made from this material should be mounted vertically.

Used in heat treatment processes, iron and steel furnaces, gas production plant and it has some useful resistance tomolten lead. Good corrosion resistance to nitric acid, sul-phuric acid and most alkalis gives it some limited use in chemical plant. Maximum temperature: 1150ºC.

Duplex Stainless SteelThese grades combine high strength with excellent cor-rosion resistance, especially to chloride stress corrosion cracking, however a tendency to brittleness limits their use to approx 300º to 315ºC maximum, sub-zero use is also restricted to approx 50ºC because of brittleness due to the ferrite content. Main uses include offshore piping, chemical tanks, flue gas scrubbers and chimneys.

Super Duplex Stainless SteelSimilar qualities and limitations to duplex grades above.These grades are widely used to handle seawater and other brackish waters, marine pumps, oil and gas produc-tion and desalination plants are typical applications.

Inconel® 600A very widely used nickel-chromium-ion alloy with excel-lent high temperature strength and oxidation resistance, however it is very vulnerable to attack in sulphurous at-mospheres above 500ºC. Good resistance to chloride-ion stress corrosion cracking and nitriding environments. Used extensively in chemical industries for its strength and corrosion resistance. Easily welded, can normally be used without post weld heat treatment.Maximum temperature: 1212ºC.

Inconel® 625A nickel-chromium alloy with excellent resistance to pitting and crevice corrosion, unaffected by radiation embrittle-ment, widely used in aerospace applications and in ma-rine environments. Good weldability, can be used in the as-welded condition.Maximum temperature: 1093ºC.

Incoloy® 800Superior to alloy 600 in sulphur, cyanide salts and neutralsalts. Extensively used in steam/hydrocarbon reforming plants for pigtail piping, manifolds and waste heat boilersand in the internal components of secondary reformers.Widely used in heat treatment equipment and as a heatersheath material.Maximum temperature: 1093ºC.

Incoloy® 825A nickel-iron-chromium alloy with exceptional resistance to many corrosive environments, it is superior to almost all metallic materials for handling sulphuric acid and shows excellent resistance to phosphoric acid. It is widely used in chemical processing, oil and gas recovery, acid produc-tion, pickling operations, nuclear fuel reprocessing and handling of radioactive wastes.Maximum temperature: 540ºC.

Incoloy® MA 956An iron-chromium-aluminium alloy produced by mechani-cal alloying, it features great strength at high temperatures with excellent resistance to oxidation, carburization, and hot corrosion. These properties make it especially suitable for gas-turbine combustion chambers and other aggressive environments containing sulphur and chloride salts.Maximum temperature: 1350ºC.

Monel® 400Nickel-copper alloy with very good corrosion resistance, commonly used to handle sea water, hydrofluoric acid, sulphuric acid, hydrochloric acid and most alkalis. Typical applications include marine fixtures, chemical processing equipment, gasoline and water tanks, process vessels and piping and boiler feedwater heaters.Maximum temperature: 538ºC.

Hastelloy® C276Nickel-molybdenum-chromium alloy with excellent corro-sion resistance, especially in chlorinated environments.Widely used in chemical plant where it tolerates ferric and cupric chlorides, solvents, chlorine, formic acid, acetic acid, brine, wet chlorine gas and hypochlorite. Can be eas-ily welded and maintains its properties in the as-welded condition.Maximum temperature: 1093ºC.


Hastelloy® B3A development of the well-established B2 alloy with im-proved thermal stability, fabricability and stress corrosion cracking resistance. It is the alloy of choice for handling hydrochloric acid in all concentrations and temperatures; it also withstands hydrogen chloride, sulphuric, acetic, hy-drofluoric and phosphoric acids.Maximum temperature: 538ºC, up to 816ºC in reducing or vacuum environment.

Hastelloy® C22A nickel-chromium-molybdenum-tungsten alloy with out-standing resistance to pitting, crevice corrosion and stress corrosion cracking. It shows exceptional resistance to a wide range of chemical process environments, such as fer-ric and cupric chlorides, chlorine, hot contaminated solu-tions, formic and acetic acids and seawater or brine solu-tions. The material has superior weldability, and retains its properties in the as-welded state.

Hastelloy® XA high temperature alloy with excellent resistance to oxidizing, reducing and neutral atmospheric conditions, widely used in aircraft jet engine components. Very good high temperature strength makes it ideal for furnace ap-plications. Resistant to stress corrosion cracking in petro-chemical applications.Maximum Temperature: 1204ºC.

Haynes Alloy 214Excellent high temperature material, with the highest re-sistance to oxidation and carburization of almost any alloy, it is recommended for temperatures of 950ºC and above, it shows useful resistance up to 1315ºC but its strength is severely reduced. Applications include ceramic firing fur-nace parts, automotive catalytic converter internals and in the industrial heating industry furnace flame hoods and rotary calciners. Has good resistance to chlorine contami-nated environments, which allows its use in hospital waste incinerators.Maximum temperature: 1204ºC.

Haynes Alloy 230Excellent high temperature strength, oxidation resistanceand long term thermal stability. Used in aerospace, chemi-cal processing and high temperature heating applications. Recommended for use in nitriding environments.Maximum temperature: 1149ºC.

Haynes Alloy 556A multipurpose alloy which offers good resistance to sul-phidising, carburising and chlorine bearing atmospheres. Common applications include waste incinerators, petro-leum processes where sulphur is present, chloride salt baths, exhaust gas probes, the alloy is one of very few that can survive in molten zinc, making it ideal for galvanizing processes.Maximum temperature: 1093ºC.

Haynes Alloy HR160A high temperature alloy with outstanding resistance to high temperature corrosion, it has excellent resistance tosulphidation, and chloride attack in both reducing and oxi-dizing atmospheres. Its resistance to attack by the prod-ucts of combustion of low-grade fuels make it particularly useful in municipal, industrial, hazardous and nuclear waste incinerators.Maximum temperature: 1204ºC.

TitaniumA lightweight material with good strength in the 150º to 470ºC range. Excellent resistance to oxidizing acids such as nitric or chromic, it is also resistant to inorganic chlo-ride solutions, chlorinated organic compounds and moist chlorine gas. Its good resistance to seawater and salt spray, allows it to be used in off-shore installations. Can be welded with special precautions to protect from atmos-pheric contamination.

Incoloy, Inconel and Monel and are trademarks of INCO Alloys International Inc.

Hastelloy is a trademark of Haynes International Inc.




Product data sheets



www.rototherm.co.uk

Fabricated Thermowells | 40

Fabricated Thermowells

Wide Range of Materials - Stainless Steels - Exotic Materials

Choice of Process Connections - Flanged - Screwed - Weld-In

Pipe or TubeASME IX Coded WeldingSpecial CoatingsNon Destructive Testing

General Description

Fabricated Pockets are precision components manufac-tured to the highest standard from pipe, tube and bar, to serve as protective devices for primary sensing elements of all types.

A wide range of possible products are available. Condi-tions of pressure, temperature, velocity and corrosion re-sistance govern the size, shape and selection of materials to ensure optimum dependability, response time and ac-curacy.

Specification

MaterialsWe are experienced in the manufacture of fabricated pock-ets in a wide range of materials, including 304, 310, 316 and 321 Stainless Steels, 446 Cr-Fe, 6% Mo, Haynes Al-loys 214, 230, 556 and HR-160, Carbon Steels, Chromium Steels, Duplex and Super Duplex Stainless Steels, Hastel-loy B3, C22, C276 and X, Incoloy 800, 825, Inconel 600 and 625, Monel 400 and Titanium.

For recommendations on the use of these materials, please refer to page 38.

Pocket SizeWe can fabricate pockets from a wide variety of tube or pipe sizes including 11 mm x 7 mm, ¼” NB, ½” NB, ¾” NB, 1” NB and larger, in a variety of schedules subject to requirements and process conditions.

Instrument ConnectionInstrument connections may be male or female, in API, NPT, BSP or other thread forms.

Process ConnectionConnection to the pipe or vessel may be by means of thread, flange or weld.

ThreadedUsing standard tapered or parallel pipe threads for sim-plicity and low cost is popular, generally for low pressure applications.Standard threads are NPT, BSP(Pl), BSP(Tr) and API. The thread size is dependent on the application. Standard sizes range from ½” to 2”.

FlangedAll sizes and pressure ratings are available to DIN, BS, ANSI/ASME and JIS or other standards. Flanged connec-tions are now the petrochemical standard for all applica-tions.

Fabricated Thermowells

Weld-InWeld in pockets are normally used where process pressure and velocities are too great for flanged and threaded, or where long term inexpensive connections are required.

Reduced Tip For applications where a quick response to changes in temperature is required, fabricated pockets may be fitted with a reduced tip. The tip is machined from bar-stock, with a bore suited to the primary element, minimising the amount of free air space around the sensor.

Immersion LengthThe immersion length should be calculated to ensure that the sensing element has sufficient immersion into the process medium to give accurate measurement. To ensure optimum results and freedom from outside influences, thermowell tip should be located at a point which equates with the lower portion of the centre third of the pipe line.

For tanks, the depth of immersion obviously varies consid-erably but, as a rule of thumb, 300 mm from outer wall will give ideal results.

In high velocity applications, wake frequency effects must also be considered. Refer to page 49 for more informa-tion.

Immersion length is defined as shown.


S

Surface FinishThermowells are supplied as standard with a fine ma-chined surface finish. Other finishes may be supplied on request.

Special CoatingsWe have specialist in-house facilities for coating thermow-ells to increase corrosion and abrasion resistance. Op-tions include Stellite®, Tungsten Carbide, Tantalum, Zirco-nium and PTFE.

Stub Flange ArrangementWhen a fabricated pocket is manufactured from exotic materials, for example Inconel®, Monel®, Hastelloy® or Ti-tanium, it is not necessary for the whole flange to be of the same material. For economic reasons, we offer a stub flange typically 3mm thick with a diameter equal to the raised face. This is welded to the Thermowell stem and is supplied fitted with a loose backing flange normally manu-factured in 316 stainless steel or carbon steel.

Weld ProceduresWe employ ASME IX coded welders, experienced in stain-less steels, Carbon Steels and exotic materials. Welding procedures, qualification records and welder approval cer-tificates can be supplied on request.

Heat TreatmentThermowells may be heat treated to customers’ require-ments. The requirements of NACE MR 01-75 can be met.

Quality Control / InspectionOur thermowells are manufactured under a strict ISO 9001-2000 quality control system. A wide range of docu-mentation and Non Destructive Testing can be provided on request, including:

Material Certification (EN 10049 3.1b) Certificate of Conformity Hydrostatic Pressure Test Dye Penetrant Inspection Radiography Ultrasonic Bore Concentricity Test Positive Material Identification Intergranular Corrosion Test Hardness Testing

Third party inspection may be arranged, and material cer-tification to EN 10204 3.1c and IBR can be provided.

Standard Thermowells

The following are the most common fabricated pockets available. Other designs are available to customers’ stand-ards, as the application requires.

It is not to be implied that all pockets shown below are available in all sizes, ratings and materials. Please refer to the sales department with specific enquiries.

Fabricated Thermowells | 42

Drawings are for illustration purposes only


Solid Drilled Thermowells

Wide Range of Materials - Stainless Steels - Exotic Materials

Choice of Process Connections - Flanged - Screwed - Weld-In

One Piece ForgingsASME IX Coded WeldingSpecial CoatingsNon Destructive Testing

General Description

Solid Drilled Thermowells are precision components man-ufactured to the highest standard from bar or forgings, to serve as protective devices for primary sensing elements of all types.

A wide range of possible products are available. Condi-tions of pressure, temperature and corrosion resistance govern the size, shape and selection of materials to ensure optimum dependability system response and accuracy.

Specification

MaterialsWe are experienced in the manufacture of solid drilled thermowells in a wide range of materials, including 304, 310, 316 and 321 Stainless Steels, 446 Cr-Fe, 6% Mo, Hay-nes Alloys 214, 230, 556 and HR-160, Carbon Steels, Chro-mium Steels, Duplex and Super Duplex Stainless Steels, Hastelloy B3, C22, C276 and X, Incoloy 800, 825 and MA-956, Inconel 600 and 625, Monel 400 and Titanium.Some suggested materials for various temperatures are shown in the chart below.

For recommendations on the use of these materials, please refer to page 38.

Instrument ConnectionInstrument connections may be male or female, with API, NPT, BSP, or other thread forms.

Process ConnectionConnection to the pipe or vessel may be by means of thread, flange or weld.

Threaded ConnectionUsing standard tapered or parallel pipe threads for sim-plicity and low cost is popular, generally for low pressure applications.

Standard threads are NPT, BSP(Pl), BSP(Tr) and API. The thread size is dependent on the application, but ¾” and 1” are common.

Solid Drilled Thermowells

Flanged ConnectionAll sizes and pressure ratings are available to DIN, BS, ANSI/ASME and JIS or other standards. Flanged connec-tions are now the petrochemical standard for all applica-tions.

Weld-In ConnectionWeld in thermowells are normally used where process pres-sure and velocities are too great for flanged and threaded, or where long term inexpensive connections are required.

Immersion ProfileThe profile should take account of fluid flow characteris-tics, strength of thermowell and immersion length.

Tip ProfileConsideration should begiven to tip profiles when design-ing the thermowell for a specific application . As a rough guide, flat tip should be used for lower pressure applica-tions, where flow characteristics around thermowell are not important. Domed and spherical profiles should be used in medium and high pressure applications respec-tively where flow characteristics around thermowell are important.

Solid Drilled Thermowells | 44

BoreSelected to suit primary sensing element, ensure ease of removal and minimise the amount of free air space around sensor, thus providing optimum response time. In general the outside diameter and bore of the thermowell should be such that the minimum wall thickness is 3 mm.

We operate specialised deep bore gun-drilling machines to ensure the concentricity and finish of the thermowell bore.

Immersion LengthThe immersion length should be calculated to ensure that the sensing element has sufficient immersion into the proc-ess medium to give accurate measurement. To ensure op-timum results and freedom from outside influences, ther-mowell tip should be located at a point which equates with the lower portion of the centre third of the pipe line.

For tanks, the depth of immersion obviously varies consid-erably but, as a rule of thumb, 300 mm from outer wall will give ideal results.

In high velocity applications, wake frequency effects must also be considered. Refer to page 49 for more informa-tion. Immersion length is defined as shown.

Please refer to page 41 for further details of Surface Fin-ishes, Special Coatings, Weld Procedures and Heat Treat-ment.

Standard Thermowells

The following are the most common thermowell types available. Other designs are available to customers’ stand-ards, as the application requires.

It is not to be implied that all thermowells shown below are available in all sizes, ratings and materials. Please re-fer to the sales department with specific enquiries.


Solid Drilled Thermowells | 46

Drawings are for illustration purposes only


Sentinel Programmable Recorder Controllers

1, 2 or 3 pen versions available User configurable via front panel keypad Easy-to-use menu-driven software for rapid configuration and calibration Universal input accepts thermocouples, RTDs, Vdc and mAdc Large character alphanumeric display panel with backlight High accuracy and stability Microprocessor control of ranging, relays, chart speed and sensor linearisation Combinations of temperature, pressure, and flow can be specified

General Description

The Sentinel range of microprocessor-based circular chart recorders is available in 1, 2 or 3 channel variants.

Sentinel combines the simplicity and clarity of pen drawn traces together with the versatility of microprocessor con-trol.

Each channel is equipped with a universal signal input which is compatible with all industry standard sensors and signals including thermocouple types J, K, T, E, N, R, S and B, Pt100 platinum resistance temperature detectors and 4/20mA current loops.

Low and high measurement ranges are provided for each input type, separate range cards are not required. Multi input versions include optoelectronic isolation of the in-put stages to eliminate troublesome installation ground loops.

Thermocouple and RTD characteristics are fully linearised by means of software. In addition thermocouple measure-ments benefit from automatic cold junction compensation which uses software correction in conjunction with a sta-ble platinum resistance detector for cold-junction temper-ature sensing.

Alarm relay facilities are comprehensive. Single pen record-ers are equipped with three failsafe single-pole changeo-ver relays, six relays are standard on the two and three pen versions. Colour-coded light-emitting diodes show the sta-tus of each relay at a glance. All relay functions are under software control: set point values and hysteresis levels are entered directly via the keypad, relay action and channel assignment are selected from user friendly menus. Relays may be freely assigned to any recording channel.

The rotation speed of the 240mm diameter chart is mi-croprocessor-controlled and user programmable. Linear Sentinel charts are compatible with other recorders in the Rototherm range.

All Sentinel recorders are housed in a strong steel case with a moulded door that can be panel or surface mounted. A gasketed lockable door protects internal components from harsh industrial environments and offers protection gener-ally to IP55. A tough acrylic window allows the chart trace, digital channel readings and alarm status to be viewed with the recorder’s door closed.

Specifications

INPUTS Number: 1, 2 or 3Input Signals: (Standard) Thermocouples K, T, J, N, E, B, R & S Platinum RTD (Pt100) 3-wireDC voltage ±2V, +20VDC current ±2mA, ±20mA Temperature Ranges: Thermocouples to BS4937 (type B minimum temp 200°C) RTD to BS1904:1984High and low measurement ranges for each inputCold-Junction Compensation: Automatic, using Pt1000 temperature detector and software correctionLinearisation: Automatic software linearisation to BS4937 (thermocouples) and BS1904: 1984 (RTD)Input Resistance: T/C: 10 Mohms±2mA : 200 ohms ±20mA : 20 ohms ±2V, +20V: >1 MohmsMinimum Span: 5°C (Thermocouples K, J, T, E, N & RTD)Thermocouple Burn-out: Pull-up or pull-down, link selectableRTD Current: 1mA approximatelyRTD Lead Resistance: 3-lead connection, compensated up to 10 ohms maximum per leadInput Protection: ±50Vdc on signal inputsInput Isolation: Optoelectronic on 2 and 3 input versions 500Vrms channel-to-channel, 500Vrms channel-to-earth

PERFORMANCE Accuracy: RTD: Low range (<200°C) ±0.2°C, High range (>200°C) ±0.8°C (Ambient 20°C) T/C: ±0.25% FS Linear: ±0.2% FSTemperature Stability: ±0.02% FS/°CCold Junction Compensation Stability: ±0.02°C/C°Linearisation Accuracy: T/couple Types J, K, T, N, E :±0.1°C -50/200°C, ±1°C max T/couple Types R & S :±0.2°C -50/200°C, ±1°C max, T/couple Type B :±1°C max.RTD :Pt100 Better than ±0.1°C - 200/850°C Calibration Shift: ±10°C user programmable to eliminate sensor errors (T/C & RTD)A to D Convertor: Integrating, 16-bit resolution with 50/60Hz noise rejectionConversion Rate: 2 per secondNoise Rejection: >120dB common-mode, 60dB normal mode 50/60Hz

Sentinel Microprocessor Based Recorder Controller

Sentinel Recorder Controller | 48

RELAYS Number: 3 on single pen, 6 on two and three-pen versions. Relay Actions: Software selectable from:-High alarm/Low alarm/Deviation alarm/Control relay (high)/Control relay (low). Relays de-energise in alarm state Assignment: Relays freely assignable to any channel Hysteresis Level: User programmable 0.0% to 10% of span Relay Contacts: SPCO silver alloy Switched Load: 150W dc, 1660VA ac non-inductive Switched Current: 6A max Switched Voltage: 30Vdc, 250Vac Snubber Network: 22nF +100R

GENERAL Security: 3-level software lock including password protection, internal hardware jumper lock, lockable door. Power Supply: 115V or 230Vac ±10%, switch selectable, 50/60Hz. Power Requirements: <25W Operating Temperature: 0 to 55°C Operating Humidity: 0 to 90% RH (non condensing)Case: Steel case with acrylic door window Protection: IP55 Mounting: Panel or surface Weight: 7kg (single pen) 7.7kg (three pen) Dimensions (overall): 336 x 396 x 171 (w x h x d) Panel Cut-out: 288 x 356 (w x h)

OPTIONS Retransmission Output Current: 0 to 20mA or 4 to 20mA. Resolution: 12 bits (0.024%) Output Compliance: 20V approx. Isolation: Optoelectronic Assignment: Card assignable to any channel. Retransmission range software selectable anywhere within chart range Action: Direct or reverse.

Event pen Number of Inputs: Two Pen Positions: Four, 0, 33, 66, 100% of pen sweep

Sweep: Position on chart user configured, forward or reverse. Input Voltage: 48-250Vac (card CR0027-E). 5-24Vdc (card CR0031-E)

Transmitter PSU Input: Isolated output, voltage 12/24V link selectable

EMC StandardsEmissions: EN50081-1Immunity: EN80082-2

Sentry Digital Process Indicators

Sentry Process Indicators are microprocessor based and are easily configurable from the front panel. Available with a variety of options, the Sentry range of Process Indicators are available with large 4 digit LED displays and a range of alarm options. Sentry has a standard 1/8 DIN panel cut out size of 92 x 45 mm.

Universal InputFor Thermocouple, RTD, 20mA, 10V and 100mV signals.

Universal Power InputWide ranging 90 to 265 VAC input allows world-wide in-stallation.

Units of MeasurementLabels are supplied for most common units of measure-ment including temperature, pressure, flow, distance and power

Alarm RelayOne alarm relay is fitted as standard.

Front Panel ButtonsFront panel buttons can be fitted to allow fast and easy access to the alarm set-points or when the Tare, Zero or Max/Min functions are to be used.

Rugged EnclosureThe enclosure uses flame retardant (VO) materials and the front panel confirms to IP65.

Clear DisplayThe flat, slightly recessed 4 digit display together with high brightness LEDs ensure maximum visibility in difficult lighting conditions

Transducer Excitation SuppliesFitted as standard to power both pressure / strain gauges (10VDC) sensors or two wire (24VDC) 20mA loops.

For complete product information, including a detailed data sheet, please visit:

www.rototherm.co.uk/sentry.html

Sentry Digital Process Indicator (with configuration buttonshidden behind the front panel)


PtCalc - Wake Frequency Calculation Software

Designed for use with Windows® 95, 98, NT & XPConforms to ASME Power Test Code 19.3 JW Murdock MethodTapered ThermowellsParallel ThermowellsMaterial Properties Data for over 25 standard and exotic materialsFlow Rate Conversions from mass flow and volume flow to fluid velocityCalculates maximum working pressureCalculates maximum stress length

General Description

PtCalc is the most up-to-date calculation for predicting vortex shedding problems of tapered and parallel ther-mowells. Based on widely accepted International stand-ards and over 30 years experience of Thermocouple In-struments, this 32 bit Windows program will allow you to easily perform your wake frequency calculations.

The results can be printed or saved to disk for future refer-ence. An extensive data library in excess of 25 grades of exotic and standard materials is included, as are tools to convert from mass flow and volume flow to fluid velocity.

System Requirements

PC with a 486/66 MHz or higher processor: Pentium RecommendedMicrosoft Windows® 95 or later operating system or Microsoft Windows® NT Workstation operating system version 4.0 or higher16 MB RAM / 10 MB Hard Disk Space (Maximum)CD ROM Drive SVGA Monitor (800 x 600 resolution, 256 colours)Mouse or other pointing device

On-Line Help

Extensive on-line help is available from the ‘Help’ menu on a wide range of subjects including:-

Use of the PtCalc softwareThe theory of Wake Frequency problemsThermowell design and dimensionsCorrect material selectionInstallation guidance

A sample help screen is shown below.

•••••

Material Grades

The material grades available in PtCalc are listed below, along with the temperature range for which values of den-sity and modulus of elasticity can be calculated.Where possible, this data has been obtained from inter-nationally acceptable standards (ASME B31.1 and ASME B31.3 for example). For some of the exotic alloys, the data is taken from manufacturers specifications.

Material Grade MinimumTemp. (ºC)

Maximum Temp. (ºC)

304 Stainless Steel 73 756

310 Stainless Steel -73 756



446 Cr-Iron 20 1000

6% Mo 20 400

Alloy 214 20 1000

Alloy 230 20 1000

Alloy 556 20 1000

Alloy HR-160 20 870

Carbon Steel C<0.3% -73 593

Carbon Steel C>0.3% -73 649

Chromium Steel ½Cr–2 Cr -73 756

Chromium Steel 2¼Cr–3 Cr -73 756

Duplex Stainless Steel 20 400

Hastelloy B3 20 1000

Hastelloy C22 20 982

Hastelloy C276 20 538

Hastelloy X 20 982

Incoloy 800 -190 800

Incoloy 825 23 800

Incoloy MA956 21 1000

Inconel 600 22 900

Inconel 625 21.1 871.1

Monel 400 -73 649

Super Duplex Stainless Steel 20 400

Titanium 20 427

PtCalc Screenshot

PtCalc Wake Frequency Calculation Software | 50

Velocity Calculators

Two velocity calculators are available from the ‘Tools’ menu.

These two useful tools provide the user with a quick and easy method of calculating the mean fluid velocity, for use in the wake frequency calculation.

Both tools include internal tables for pipe diameter, based on nominal bore and schedule, and a comprehensive se-lection of units of measurement.

Volume Flow Calculator

Mass Flow Calculator

Printing

Results may be printed on any Windows printer, on A4 paper.

Wake Frequency & Stress CalculationIn Accordance With ASME PTC 19.3 / Design Memo T/115

General Details

Date : 17/05/2007Customer Name : Sample OnlyCustomer Ref : Sample OnlySupplier Ref : Sample OnlyTag Number : Sample OnlyCalculation Number : Sample Revision : Sample

Thermowell Dimensions

Root Diameter : 32 mmTip Diameter : 26 mmBore : 6.2 mmTip Thickness : 5.5 mmUnsupported Length : 250 mm

Thermowell Material

Material Grade : 316 Stainless SteelModulus of Elasticity : 1994304.55 kg/cm2Density : 7973.3032 kg/m3Maximum Allowable Stress : 1406.1397 kg/cm2

Fluid Properties

Phase : LiquidVelocity : 25.46 m/sOperating Temperature : 12 COperating Pressure : 10 bargOperating Density : 1000 kg/m3

Calculated Results

Thermowell Natural Frequency : 312.2998 HzVortex Shedding Frequency : 215.4308 HzFrequency Ratio : 0.68982Limiting Velocity : 29.5265 m/sMaximum Working Pressure : 649.26 bargMaximum Velocity Length : 269.2411 mmMaximum Stress Length : 226.1021 mm

Summary

Frequency Ratio - ACCEPTABLEOperating Pressure - ACCEPTABLEUnsupported Length - UNACCEPTABLEComments -

Thermocouple Instruments Ltd, Pontygwindy Road, Caerphilly, Mid Glamorgan, CF83 2WJTel 02920 807400 (Intl +44 2920 807400) Fax 02920 807410 (Intl +44 2920 807400)Internet www.thermocouple.co.uk e-mail [email protected]


Connectors

Plugs and SocketsTerminal BlocksCompression GlandsTermination Glands

General Description

We can supply a wide range of connectors for use with thermocouples and resistance thermometers. The items described on this page represent a small sample of the different types available. Please contact sales office for further information.

Plugs and In-Line Sockets

Plugs and in-line sockets are available for use with all types of thermocouples and resistance thermometers. Thermo-couple plugs may be standard (P4) or miniature (P3) sizes. Plugs and sockets to suit duplex elements can also be supplied. A wide range of cable glands and clamps, suitable for most wire and cables, can be specified.

Panel Mounted Sockets

Sockets for panel mounting are available to suit standard and miniature thermocouple plugs. Round or rectangular versions are available.

DIN Terminal Blocks

Terminal blocks are available in either Ryton or ceramic construction.The Ryton block is ATEX approved to EEx e II for increased safety applications. Maximum operating temperature is 240ºC.The ceramic terminal block conforms to DIN 43735, and has a maximum operating temperature of 350ºC.Blocks are available with 2,4,6 or 8 (ceramic only) terminal posts.

Sliding Compression Fittings

Sliding compression fittings for thermocouples and re-sistance thermometers are available to suit all standard sheath diameters. Common materials are stainless steel and brass.

Sheath Diameter (mm) Thread Size

1.0

1/8” BSPT1/4” BSP1/4” NPT1/2” BSP

1.5

1/8” BSPT1/4” BSP1/4” NPT1/2” BSP

2.0

1/8” BSPT1/4” BSP1/4” NPT1/2” BSP

3.0

1/8” BSPT1/4” BSP1/4” NPT1/2” BSP1/2” NPT

4.51/4” BSP1/4” NPT1/2” BSP

5.51/4” BSP1/4” NPT1/2” BSP

6.01/4” BSP1/4” NPT1/2” BSP

8.01/4” BSP1/4” NPT1/2” BSP

10.8 1/2” BSP

Termination Glands

Termination glands (cold end seals) are available to suit all standard sheath diameters. Common materials are stain-less steel and brass. EExd certified glands are also avail-able.

Sheath Diameter (mm) Thread Size1.0 M16

1.5 M16 M20

2.0 M16 M20

3.0 M16 M20

4.5 M16 M20

5.5 M16 M20

6.0 M16 M20

8.0 M16 M20

10.8 M20 M25

P4 Panel Socket Round

P4 Panel SocketRectangular

Ryton Block CeramicBlock

3PS Plug & Socket (RTD)

P4 Plug & Socket

P3 Plug & Socket

Thermocouple Colour Codes | 52

Thermocouple Colour Codes


Other products available

Heavy Duty Bimetallic Thermometers

The Rototherm range of Heavy Duty Bimetallic Thermometers combines robust construction, making these instruments suitable for the most stringent environmental conditions, together with an accurately manufactured bimetallic coil, which ensures a long dependable life.

Rototherm bimetallic thermometers do not contain harmful fill fluids eliminating any possibility of process contamination.

Light Duty & Surface Temperature Bimetallic Thermometers

Suitable for use on food processingequipment, the completely sealed stainless steel stem makes Rototherm Light Bimetallic Thermometers the ideal choice.

A range of surface mounting bimetallic thermometers suitable for testing, balancing and fault-finding on heating systems. They can be attached to a surface by an adjustable spring or magnet to give an immediate indication of temperature without drilling or cutting.

Filled System Temperature Indicators

The Rototherm range of filled system thermometers offer ough yet accurate instruments with rigid stems for direct mounting or with flexible capillary for remote reading.

Most models in the range may be specified with electrical contact heads to provide alarm or control functions.

Rototherm non toxic filled system thermometers are designed to give guaranteed reliability over a wide range of ambient temperature conditions and are compensated for ambient temperature changes from -30 to +50ºC.

DA5000 Digital Anemometer

The Rototherm DA5000 Digital Anemometer enables fast, reliable and accurate readings of Air Velocity utilising a high quality rotating vane sensor with either a 25mm (1”) or 70mm (2.75”) diameter.

DA5000 may be used with either of the Rototherm rotating vane sensors, identification of the connected sensor is displayed automatically when the instrument is switched on.

Digital Thermometers & Pressure Gauges

A range of Digital Thermometers and Pressure Gauges that employ micro-processor electronics to enable extremely low power consumption to be achieved thus offering extended battery life.

DigiTemp Digital Thermometers are available with either type K thermocouple or high accuracy Pt1000 input.

The combination of high accuracy with stainless steel sensing probes sealed to IP67 enables DigiTempthermometers to be utilised in many industrial and process applications.

DigiGauge Digital Pressure Gauges offer high accuracy and a 4 digit display - which enables it to be used as a

digital standard test gauge. The DigiGauge has been designed to cover a wide range of test and measurement applications with pres-sure ranges from vacuum to 400 bar.

Both DigiTemp and DigiGauge are offered with the option of a 4 to 20mA retransmission signal and may be specified with maximum and minimum value display. The

addition to the range of intrinsically safe versions allows DigiTemp and DigiGauge to be used in hazardous areas.

Recorders & Recorder Controllers

An extensive range of circular chart recorders/controllers that include microprocessor based Sentinel multi input recorder/controllers, electrical input recorder/controllers and a wide range of mechanical recorders for temperature, pressure, humidity or flow with, if required, options for electrical or pneumatic control.

The Rototherm range of recorders allow up to 3 pen recording with either 225mm (9”), 255mm (10”) or 300mm (12”) charts and a range of options that include

recording only or either electric or pneumatic control. A range of pneumatic indicating controllers are also available tocontrol temperature, pressure and humidity.

Rototherm recorders and controllers are both accurate and reliable.

Other Products | 54

Flow Products

The Rototherm/Thermocouple range of Orifice and Restriction Orifice Plates are based on proven technology - suitable for high temperature and pressure applications.

Orifice Plates are recommended for clean liquids, gases and low velocity steam flows. The range includes Tab Handled Orifice Plates, Restriction Orifice Plates, RTJ Type Orifice Plates, Orifice Carrier Assemblies, Venturi Tubes and Nozzles, Averaging Pitot Tubes and Orifice Flanges.

As well as Orifice Plates, Rototherm is able to offer:

Flow Nozzles

For measurements where high temperatures and veloci-ties are present, the flow nozzle may provide a better solution than an orifice plate.

Venturi Tubes

There are two common types of Venturi tube - the Venturi nozzle, and the classical Venturi. Both feature a convergent inlet section and a divergent outlet section. The major advantage of the Venturi over orifice plates and flow nozzles is in the area of pressure recovery.

Pitot Tubes

These practical and effective Differential Pressure primary elements can, in some applications, match Venturi's in terms of performance at a substantial cost advantage, especially for large diameter pipelines.

Other Catalogues Available

To complement this flow catalogue, a series of other publications are available detailing these and other products in the Rototherm and Thermocouple range.

Product GuideThermometer. chart recorders, controllers, thermowells, orifice plates and temperature sensors

Pressure Gauge CatalogueProcess gauges, test gauges, diaphragm seal units, differential pressure gauges, digital pressure gauges, pressure transmitters and pressure gauge accessories.

Flow CatalogueOrifice plates, carrier assemblies, orifice flanges, venturi tubes and nozzles, meter runs, differential pressure gaug-es and flow recorders

Request your catalogue by contacting the Rototherm / Thermocouple Sales Department

Pressure Gauges

British Rototherm has worked hard to establish itself as a world class manufacturer of pressure gauges.

With the acquisition of the pressure gauge manufacturer Sydney Smith Dennis (SSD) in 1998, Rototherm’s range of pressure gauges dramatically increased to include gauges to suit most industrial applications.

The Rototherm range of pressure gauges now includes a comprehensive selection of process, utility, test, absolute and differential pressure gauges. To complement these gauges a range of accessories are available that includediaphragm seal units and electrical contact heads.

Process GaugesA wide range of process gauges are offered including full safety pattern, stainless steel cased Elite safety pattern gauges and high corrosion resistant DMC plastic cased pressure gauges. Low range capsule gauges are also offered. The range also includes Elite Pressure Gauges with integral 5 amp switches.

Differential Pressure GaugesA range of high quality, cost effective and reliable differential pressure gauges designed to measure the difference in pressure between two points in a system and show it on a single dial gauge. With their simple and compact design this range offers outstanding value for money.

Pressure TransmittersThe Rototherm range of Pressure Transmitters provide a 4 to 20 mA output signal by utilising a diaphragm strain gauge mounted with an amplifier in a stainless steel housing. This reliable range of instruments are rugged and easy to install.

measurement and control in temperature, pressure, humidity, flow and level

images are not to scale

product cataloguethermometers | chart recorders | controllers | thermowells | orifice plates | temperature sensors

measurement and control in temperature, pressure,

pressure gauge catalogue

measurement and control in temperature, pressure, humidity, flow and level

www.rototherm.co.uk

images are not to scale

TM

group company

Flow Product Catalogue

Orifi ce Plates | Restriction Orifi ce Plates | Orifi ce Flanges | Carrier Assemblies | Venturi TubesPitot Tubes | Meter Runs | Differential Pressure Gauges | Flow Recorders

With over seventy years of experience, British Rototherm continues to be a world leader in the manufacture of industrial instrumentation for measuring, monitoring and controlling Temperature, Pressure, Humidity, Flow and Level.

British Rototherm and Thermocouple products are manufactured in its modern factory located in the South Wales region of the United Kingdom. Sited on 6 acres of land at Kenfig Industrial Estate, the company operates from a modern 6,030 square metre (65,000 square feet) factory.

Suitable for many industrial applications, Rototherm / Thermocouple products are precision built to the highest quality.

Approved by major companies and contractors in the United Kingdom and throughout the world for the supply of instrumentation and associated products, Rototherm / Thermocouple products are specified and installed wherever reliability and long lasting, accurate performance is demanded.

The Rototherm / Thermocouple range of instrumentation include:

• Mechanical Recorders & Recorder Controllers • Pneumatic Indicators & Recorder Controllers • Thermometers • Digital Thermometers • Digital Process Indicators • Pressure Gauges • Digital Pressure Gauges • Thermowells • Temperature Sensors & Assemblies • Orifice & Restriction Orifice Plates • Digital Anemometers • Recorder Charts, Pens & Spares

British Rototherm Company LimitedKenfig Industrial Estate, Margam, Port Talbot SA13 2PW, United Kingdom

Telephone: +44 (0) 1656 740 551 Facsimile: +44 (0) 1656 745 915

E-mail: [email protected] [email protected] site: www.rototherm.co.uk www.thermocouple.co.uk

In keeping with British Rototherm’s policy for continual product development and improvement, we reserve the right to amend specifications without notice.© 2007 British Rototherm Co. Ltd. All rights reserved. Company registered in Wales : 2570730. Registered office as above.

ISO9001:2000FM11958

TM

Temp07/JG

Documents

Temperature Catalogue