Model 332

Differential Pressure Transmitter

USERS GUIDE

Please read carefully before using.

Manufactured by:

FURNESS CONTROLS LIMITED

Beeching Road, Bexhill, East Sussex, TN39 3LJ, England. Telephone (01424) 730316 Fax: (01424) 730317

Email: mailto:Sales@furness-controls.com Web Site: http://www.furness-controls.com

TABLE OF CONTENTS TABLE OF CONTENTS .........................................................................................................................2

REVISION RECORD ..............................................................................................................................3

SAFETY NOTES AND RECOMMENDATIONS.....................................................................................4

INTRODUCTION.....................................................................................................................................5 GENERAL DESCRIPTION..................................................................................................................5 ENCLOSURE ......................................................................................................................................5

INSTALLATION......................................................................................................................................6 MOUNTING .........................................................................................................................................6 PNEUMATIC .......................................................................................................................................6 ELECTRICAL ......................................................................................................................................7

COMMISSIONING ................................................................................................................................11

CALIBRATION .....................................................................................................................................12

SPECIFICATION ..................................................................................................................................13

DIMENSION DRAWINGS.....................................................................................................................14 BASIC INSTRUMENT .......................................................................................................................14 PIPE MOUNTING KIT .......................................................................................................................14 FLUSH MOUNTING KIT....................................................................................................................15 PANEL MOUNTING KIT....................................................................................................................15

Model 332 Users Guide Issue 8 Page 2

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REVISION RECORD Issue Date Summary of changes

1 25/02/00 Addition of 0.4 to 2V 3-wire range 2 18/02/02 Relay wiring connections added 3 11/03/02 Typical wiring configurations and relay ratings added and model 2 range amended 3a 08/10/02 Clarification added regarding relay states and keypad use. 3b 28/11/02 Relay 1 and 2 delay options added to manual. 4 28/04/03 Moved menu description to 300 Series Supplement 5 23/01/06 Added info on 0.5 V output options and Auto Zero hardware option. Changed calibration

service from NAMAS to UKAS. 6 19/07/06 Added wiring drawings for all o/p options & auto/remote zero 7 27/05/09 Remote Zero switch timing 8 14/01/10 Dimension drawings added.

Specification updated. Calibration interval added.

Model 332 Users Guide Issue 8 Page 4

SAFETY NOTES AND RECOMMENDATIONS

PLEASE READ CAREFULLY 1. Read these instructions and this users guide carefully. 2. All electrical supplies to the equipment must be externally fused with an

appropriately rated fuse for safety.

3. Always unplug the equipment from the supply before carrying out any servicing.

4. The air supply must be turned off before carrying out any work on the pneumatic system. The air supply must not exceed that specified on the instrument or in the Test Certificate.

5. If in doubt about any aspect of safety with the equipment then contact Furness Controls BEFORE proceeding.

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INTRODUCTION

This guide should be read in conjunction with the ‘300 Series Supplement’

General Description The FCO332 is a fully configurable, industrial differential pressure transmitter. The pressure cell is based on the unique Furness Controls capacitive sensor of proven reliability. A microprocessor is used to control all functions of stability, such as temperature correction and linearity. The output can be scaled as a linear or square root function to facilitate the use of Pitot Static Tubes or other primary flow elements. The FCO332 is suitable for industrial applications of control, measurement and monitoring. Features include: • Optional large character liquid crystal 4½ digit display • Linear or square root output • 10:1 range adjustment using Model 301 interface

Optional Configurations: • 2-Wire 4 to 20mA Current output • 3-Wire Voltage output

0 to 0.5V, 0 to 1V, 0 to 2V, 0 to 5V, 0 to 10V, 0.1 to 0.5V, 0.2 to 1V, 0.4 to 2V, 1 to 5V, 2 to 10V

• 4-Wire Voltage output 0 to 0.5V, 0 to 1V, 0 to 2V, 0 to 5V, 0 to 10V, ±0.5V, ±1V, ±2V, ±5V, ±10V

• 4-Wire Isolated 4 to 20mA Current output • 4-Wire Isolated Voltage output

0 to 1V, 0 to 2V, 0 to 5V, 0 to 10V, ±0.5V, ±1V, ±2V, ±5V, ±10V • Remote Zeroing Function

Zero the FCO332 with an externally fitted button, or suitable electronic circuitry. Available to instruments with the necessary hardware option fitted.

• Auto Zeroing Function Adjustable delay between 0 and 24.0 Hours with 0.1 hour resolution. Available to instruments with the necessary hardware option fitted.

Typical applications include: • Combustion pressure measurement and control of industrial furnaces • Air pressure measurement and control of dryers, kilns and ovens • Air flow measurement in conjunction with pitot static tubes, orifice plates or venturi

Enclosure The instrument is housed in an IP54 rated ABS enclosure. Pneumatic connections (fitted as standard) are for 4mm i/d push on tubing. Optional pneumatic connections are:

• 1/8”BSPP(f) threaded adaptor, and • 1/4"BSPP(f) threaded adaptor

INSTALLATION

Mounting The recommended mounting position of the FCO332 is with the pressure entry ports facing directly downwards. This helps prevent the ingress of dust and liquid. Due to the sensitivity of lower range instruments, they should not be mounted in areas where they will be subjected to high vibration as this could cause spurious readings. The enclosure has four mounting holes for M4 screws, which are accessible with the cover removed.

Pneumatic All pipework should slope downwards from the instrument to make it self draining. When using the instrument to measure pressure at a single point with long pipe runs the reference port should be piped in parallel, with the pipe left open at the process end.

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Electrical Connectors Cable entry is via a right-angled Type C DIN connector with M6 cable gland mounted on the bottom of the instrument. Where optional features are added to the standard FCO332 (i.e. relay o/p, auto zero, or remote zero) the same right-angled Type C DIN connector is used to provide power and/or to gain access to the various functions provided by that option. A two to four core cable, up to 6.0mmO.D., can be used with the standard socket. The terminals provided with the socket are of the screw type. The socket must first be dismantled, by removing the securing screw and pushing the centre terminal block from the housing. The cable is passed though the gland and housing. Conductors are terminated as detailed below. Each conductor should be stripped free of insulation for a length of 3-5mm.

Terminal Block

Securing Screw

Housing TransmitterCircuitry

Remote ZeroCircuitry

Relay 1Contacts

Relay 2Contacts

AuxPower

Power

Auto ZeroCircuitry

RelayCircuitry

FCO332 System Diagram

Transmitter Connection Refer to the instruments rating label for power supply requirements and configuration.

4 to 20mA Output Voltage Output Isolated 4 to

20mA O/P Isolated

Voltage Output PIN 2-Wire 3-Wire 4-Wire 4-Wire 4-Wire

1 -ve n.c. -ve -out -Vout 2 +ve +ve +ve +24Vdc +24Vdc 3 n.c. O/P O/P +out +Vout

n.c. 0Vdc 0Vdc 0Vdc 0Vdc Note: the user cannot reassign pin assignments.

The diagrams below show typical wiring configurations:

4 wire - Isolated Voltage Output

12

3VoltageIndicator

PowerSupply

24V 0V

+Vout(iso)

24V

0V

-Vout(iso)

Isolation Barrier

24Vdc +/-10%

4 wire - Isolated 4 to 20mA Output

12

3mA

Indicator

PowerSupply

24V 0V

+mAout(iso)

24V

0V

-mAout(iso)

Isolation Barrier

24Vdc +/-10%

12

3

PowerSupply

VoltageIndicator

+V 0V -V

Vout

+Ve

0V

-Ve

4 wire - Voltage Output

+/-14Vdc to +/-18Vdc +/-10%

12

3

VoltageIndicator

PowerSupply

+V 0V

No

Con

nect

ion

Vout

+Ve

0V

3 wire - Voltage Output

14Vdc to 36Vdc +/-10%

12

3

mAIndicator

PowerSupply

+V 0V

-Ve+Ve

NoConnection

NoConnection

2 wire - 4 to 20mA Output

9Vdc to 36Vdc +/-10%3mA No Load 3mA No Load

4mA No Load 4mA No Load

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Auxiliary Power Connection The connector fitted to the top left of the case has terminals for powering the internal circuitry for the relay outputs & auto zero functions, and must be connected to an external 24Vdc power source. The same connector is also used to connect to an external (remote) switch or suitable electronic circuitry for zeroing the transmitter.

PIN Remote Zero

Auto Zero

Relay Outputs

1 RZ(0V) RZ(0V) RZ(0V) 2 RZ(+V) RZ(+V) RZ(+V) 3 24Vdc 24Vdc

0Vdc 0Vdc

Power Supply Specification • Remote Zero power supply 5Vdc to 24Vdc +/-10%, 5mA (min)

Switch contact time 0.1sec (min) to 1.0sec (max) • Auto Zero power supply 24Vdc +/-10%, 30mA (min) • Relay power supply 24Vdc +/-10%, 50mA (min)

Note: When the Zero is triggered, the display and output are frozen for 1.5 seconds while the

pneumatic ports are isolated from the process ports. The diagram below shows a typical wiring configuration:

NOTE: Remote Zero is an optional feature

12

3

Pow

erS

uppl

y

Remote Zero

24Vdc

RZ(+V) RZ(0V)

0V

24Vdc

0V

Relay Connections (Option) The FCO332 can optionally incorporate a pair of relays for triggering auxiliary equipment such as alarms. Two connectors for the relays are located on the top right of the case. The middle connector is for the relay 1 contacts. The right-hand connector is for the relay 2 contacts. The relays do not feature any contact suppression.

Relay 2 Contacts

Relay 1 Contacts

Relay Connectors

PIN Relay 1 Contacts

Relay 2 Contacts

1 NO NO 2 NC NC 3 unused unused

COM COM

• Relay states are shown for the instrument switched off. • Relay contact ratings 2A @ 55Vac/30Vdc (non inductive load)

NOTE: refer to the ‘300 Series Supplement’ for setting the relay trigger levels.

The diagram below shows a typical wiring configuration:

12

3

12

3

nc no

com

nc no

comRelay 1Contacts

Relay 2Contacts

NoConnection

NoConnection

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COMMISSIONING Make the electrical and pneumatic connections as recommended. Turn on the power supply. Configuration settings (such as range, display settings, etc.) may be changed using the FCO301 utility cable, refer to the 300 series supplement for further details. Check that either the auxiliary current sensing or voltage-measuring device that is being used is registering. If not, check the supply voltage is within specified limits and inspect for poor connections. After fixing the instrument in position, allow at least one hour before commencing the final commissioning. After commissioning, allow the instrument to reach ambient temperature for at least 10 minutes. With no pressure applied, check the output is correct for zero input. If not:-

• press the ‘zero’ button (indicated below) • activate the remote zero (if fitted) • or enable the auto zero function (if fitted), the delay time may have to be temporarily set to

0.1hour (refer to the 300 series supplement for further details).

Zero Button

NOTE: if the auto zero valve is fitted, pressing either the zero button or the remote zero will force an auto zero cycle. In the unlikely event an error message is displayed, refer to the 300 series supplement for further details.

The instrument is now ready for operation.

CALIBRATION Furness Controls recommend that all pressure transmitters and flow devices are recalibrated annually. For critical applications, it is advisable to check the calibration more frequently. All calibration of the FCO332 is performed through a PC using the FCO301 interface unit and software. Refer to the ‘300 Series Supplement’ for further information regarding the recalibration of the FCO332. Contact our Furness Controls’ UKAS accredited calibration laboratories for further information.

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SPECIFICATION

Features

Models/Ranges Model1: ±50Pa Model2: ±150Pa Model3: ±500Pa 

Model4: ±2500Pa Model5: ±10kPa Model6: ±20kPa 

High pressure ranges available on request 

Output Options 

2 wire 4‐20mA 3 wire voltage: 0‐1 VDC to 0‐10VDC full scale 4 wire voltage: 0‐1 VDC to 0‐10VDC full scale 4 wire voltage: ±1 VDC to ±10 VDC full scale 4 wire isolated: any of the mA or voltages above 

Display (Optional)  Most common differential pressure, volumetric flow, mass flow, and velocity units Adjustable Damping  0.0 to 60.0 seconds 

Square Root function  Optional Trip Level Relays  Optional: 2 relays, rated 2A @ 55Vac, 30Vdc Zero Control  Optional: Automatic or Remote 

Pneumatic Ports Barbs with locknuts for 6mm OD x 4mm ID for flexible tubing ⅛”  BSPF ¼”  BSPF 

Performance  Enhanced  Accuracy @ 20°C 

10% to 100% range:  < ± (0.25% reading +1 digit)  Note: Unipolar span only, standard 0 to 10% range:  < ± (0.025% range +1 digit)  accuracy applies to bipolar span. 

Standard  Accuracy @ 20°C 

10% to 100% range:  < ± (0.5% reading +1 digit) 0 to 10% range:  < ± (0.05% range +1 digit) 

Span Adjustment 10% to 100% of range  Note: Span can be set anywhere within instruments range.   For span < 20% of range, accuracy is reduced to the standard specification 

Long Term Drift  Typically 0.2% per annum 

Temperature Coefficients 

Standard Zero: < 0.2%/°C Range: < 0.4%/°C 

Enhanced Zero: < 0.02%/°C Range: < 0.02%/°C 

Working Temperature  ‐10 to 60°C Minimum Step Response 

100ms 

Output Update  50ms Output Resolution  Better than 0.033 % Span Overload  20 x DP range 

Static Pressure  ±1 bar Gauge 

Construction  

Enclosure IP54 rated ABS Choice of  mounting options 

Dimensions  120 x 80 x 58mm 

Materials in Contact With Media 

Copper, brass, nickel, mica & PVC 

Media Compatibility  Air and non‐corrosive gases max 95% humidity non‐condensing Weight  0.5kg 

DIMENSION DRAWINGS

Basic Instrument

Pipe Mounting Kit

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Flush Mounting Kit

Panel Mounting Kit