Ultrasonic measurement of sulfuric acid - FLEXIM · Ultrasonic measurement of sulfuric acid ... acid in sulfuric acid production facilities ... • No contact with the fluid,

TSPIOX-S721SAV2-1-1EN_Leu, 2017-05-30

Technical specification

PIOX® S721SA

1

PIOX

Measurement with transducers mounted with Variofix C

S721**-****S

Ultrasonic measurement of sulfuric acid

Non-invasive clamp-on ultrasonic measuring system for continuous monitoring of concentration, density orother process-relevant fluid properties

Features

• Bidirectional flow measurement of water and sulfuric acid in sulfuric acid production facilities

• Simultaneous non-invasive ultrasonic transit time mea-surement for density and concentration determination of sulfuric acid with a concentration of 85...100 weight percent

• Installation and start-up during ongoing operations, thus no system shutdowns

• No flanges or welding work required for installation

• No contact with the fluid, no special materials required

• Maintenance-free measurement

• The product is available in three designs for use with different pipe diameters

• Ideally suited for all pipe materials in the sulfuric acid production

Applications

• Acidic strength and flow in the absorption tower

• Flow and concentration at the inlet of the absorption tower

• Diluter efficiency

• High-precision concentration measurement in the heat recovery system

• Water balance

PIOX® S721SA Technical specification

Table of contents

TSPIOX-S721SAV2-1-1EN_Leu, 2017-05-302

Function ........................................................................................................................................................... 3Measurement principle...................................................................................................................................... 3Transit time measurement ................................................................................................................................ 3Transit time difference principle ........................................................................................................................ 4Number of sound paths..................................................................................................................................... 5

Transmitter ...................................................................................................................................................... 6Technical data................................................................................................................................................... 6Dimensions ....................................................................................................................................................... 72" pipe mounting kit (optional)........................................................................................................................... 8Terminal assignment......................................................................................................................................... 9

Transducers................................................................................................................................................... 10

Technical data ............................................................................................................................................... 10Transducer mounting fixture ........................................................................................................................... 11

Coupling materials for transducers ............................................................................................................ 12

Connection systems ..................................................................................................................................... 13Transducer cable ............................................................................................................................................ 13

Junction box .................................................................................................................................................. 14Technical data................................................................................................................................................. 14Dimensions ..................................................................................................................................................... 142" pipe mounting kit (optional)......................................................................................................................... 14Terminal assignment....................................................................................................................................... 15

Clamp-on temperature probe (optional) ..................................................................................................... 16

Technical specification PIOX® S721SA

TSPIOX-S721SAV2-1-1EN_Leu, 2017-05-30 3

Function

Measurement principle

The transducers are mounted on the pipe which is completely filled with the fluid. The ultrasonic signals areemitted alternately by a transducer and received by the other. The physical quantities are determined from thetransit times of the ultrasonic signals.

The transmitter PIOX S determines physical quantities for analysis by using the transit time measurementand, additionally, physical quantities for flow by means of the transit time difference principle.

Transit time measurement

The average of the transit times of both ultrasonic signals in the fluid and the length of the sound paths in thefluid are used for the calculation of the sound speed. By using the average, the sound speed is independent ofthe flow velocity of the fluid. The physical quantities of analysis are determined from the sound speed.

Calculation of sound speed

cγ =

where

Path of the ultrasonic signal in the flowing fluid

Average of transit times tγ in the flowing fluid

cγ - sound speed in the fluidlγ - sound path in the fluidtγ - Average of transit times in the fluid

tγ

lt---

4 TSPIOX-S721SAV2-1-1EN_Leu, 2017-05-30


Transit time difference principle

Portable ultrasonic flow measurement of gas and liquids in hazardous areas

The transit time difference, ∆t, is measured and allows the flowmeter to determine the average flow velocityalong the propagation path of the ultrasonic signals. A flow profile correction is then performed in order to ob-tain the area averaged flow velocity, which is proportional to the volumetric flow rate.

Two integrated microprocessors control the entire measuring process. This allows the flowmeter to removedisturbance signals, and to check each received ultrasonic wave for its validity which reduces noise.

Calculation of volumetric flow rate

= kRe · A · ka ·

where

Transit time difference ∆t

- volumetric flow ratekRe - fluid mechanics calibration factorA - cross-sectional pipe areaka - acoustical calibration factor∆t - transit time differencetγ - Average of transit times in the fluid

∆tt0

V· t2 t-----------

V·



Number of sound paths

The number of sound paths is the number of transits of the ultrasonic signal through the fluid in the pipe. De-pending on the number of sound paths, the following methods of installation exist:

• reflection arrangementThe number of sound paths is even. Both of the transducers are mounted on the same side of the pipe. Correct positioning of the transducers is easier.

• diagonal arrangementThe number of sound paths is odd. Both of the transducers are mounted on opposite sides of the pipe. In the case of a high signal attenuation by the fluid, pipe and coatings, diagonal arrangement with 1 sound path will be used.

The preferred method of installation depends on the application. While increasing the number of sound pathsincreases the accuracy of the measurement, signal attenuation increases as well. The optimum number ofsound paths for the parameters of the application will be determined automatically by the transmitter.

As the transducers can be mounted with the transducer mounting fixture in reflection arrangement or diagonalarrangement, the number of sound paths can be adjusted optimally for the application..

a - transducer distance

Reflection arrangement, number of sound paths: 2

Diagonal arrangement, number of sound paths: 3

Diagonal arrangement, number of sound paths: 1 Diagonal arrangement, number of sound paths: 1,negative transducer distance

a

a

a > 0 a < 0



Transmitter

Technical data

PIOX S721SA /SL /SM /SSdesign field device with stainless steel housingapplication sulfuric acid measurementtransducers CDK1N52 CDM2N52

CDM2E52CDQ2N52CDQ2E52

outer pipe diameter DN200...DN2000 DN100...DN300 DN25...DN150

analysismeasurement uncertainty

- transit time (repeatable) 1/(50 . fα) ± 10-4 . t

- transit time (absolute) 1/(5 . fα) ± 10-4 . t

fα - transducer frequency, t - total transit time

e.g. for transducers with transducer frequency M (fα = 1 MHz):repeatable: 20 ns ± 10-4 . t, absolute: 200 ns ± 10-4 . t

repeatability1

- mass fraction 0.06 w%

- density 0.4 kg/m3

For the total measurement uncertainty of mass fraction and density see document TIPIOX-S_uncert_analysis_H2SO4.

fluid sulfuric acid 85...100 %

fluid temperature 0...250 °Cflowmeasurement principle transit time difference correlation principleflow velocity 0.01...25 m/srepeatability 0.15 % of reading ±0.01 m/s

accuracy2

- with standard calibration ±1.6 % of reading ±0.01 m/s- with advanced calibration

(optional)±1.2 % of reading ±0.01 m/s

- with field calibration3 ±0.5 % of reading ±0.01 m/sfluid water, sulfuric acid 0...100 %temperature compensation corresponding to the recommendations in ANSI/ASME MFC-5.1-2011transmitterpower supply 100...230 V/50...60 Hz or

20...32 V DC or11...16 V DC

power consumption < 15 Wnumber of measuring chan-nels

1

damping 0...100 s, adjustablemeasuring cycle 100...1000 Hzresponse time 1 s (1 channel)housing material stainless steel 316L (1.4404)degree of protection accord-ing to IEC/EN 60529

IP66

dimensions see dimensional drawingweight 5.1 kgfixation wall mounting, optional: 2" pipe mountingambient temperature -40...+60 °C (< -20 °C without operation of the display)display 128 x 64 dots, backlightmenu language English, German, French, Dutch, Spanish, Russian, Polish

1 for reference conditions and with field calibration2 for reference conditions and v > 0.15 m/s3 reference uncertainty < 0.2 %



measuring functionsphysical quantities - physical quantities for analysis: concentration of analyte in matrix, concentration of matrix in analyte,

mass fraction, volume fraction, mole fraction, density, normalized density, normalized sound speed

- volumetric flow rate, flow velocity, sound speed, mass flow rate

totalizer volume, mass

diagnostic functions signal amplitude, SNR, SCNR, standard deviation of amplitudes and transit timescommunication interfaces (optional)service interfaces/diagnostic interfaces

measured value transmission, parametrization of the transmitter:- USB- Ethernet

process interfaces(max. 1 optional)

with inputs and including parametrization of the transmitter:- Modbus RTU- Modbus TCP- HART- Profibus PA- FF H1

serial data kit (optional)software FluxDiag: online diagnostics and report generation (min. Windows 7)

сable USB cabledata loggerloggable values all physical quantities, totalized values and diagnostic valuescapacity max. 800 000 measured valuesoutputs (optional)

The outputs are galvanically isolated from the transmitter.number switchable current output: 2 or switchable current output: 1, current output (HART): 1

andbinary output: 1switchable current outputAll switchable current outputs are switched to active or passive mode at the same time.

- range 4...20 mA (3.2...22 mA)- accuracy 0.04 % of reading ±3 μA- active output Rext < 350 Ω- passive output Uext = 8...30 V, depending on Rext, Rext < 1 kΩ

current output (HART)current output- range 0/4...20 mA- accuracy 0.1 % of reading ±15 μA- active output Rext < 500 Ωcurrent output I1 in HART mode- range 4...20 mA- active output Uint = 24 V

binary outputoptorelay 26 V/100 mAbinary output as alarm output- functions limit, change of flow direction or errorbinary output as pulse output mainly for totalizing- pulse value 0.01...1000 units- pulse width 1...1000 msinputs

The inputs are galvanically isolated from the transmitter.temperature input

number 1type Pt100/Pt1000connection 4-wirerange -150...+560 °Cresolution 0.01 Kaccuracy ±0.01 % of reading ±0.03 K

current inputnumber 1accuracy 0.1 % of reading ±10 μAactive input Uint = 24 V, Rint = 50 Ω, Pint < 0.5 W, not short-circuit proof- range 0...20 mApassive input Rint = 50 Ω, Pint < 0.3 W- range -20...+20 mA

PIOX S721SA /SL /SM /SS



Dimensions

2" pipe mounting kit (optional)

PIOX S721**-****S

in mm

PIOX S721**-****S

255

240

cable gland: max. 6x M20 with flat gasket and counter nut

280

87

fixing holes for wall mounting

320



Terminal assignment

PIOX S721

power supplyterminal strip KL4terminal connection (AC) connection (DC)PE earth earthN(-) neutral -L(+) phase +

transducersterminal strip KL11, KL12extension cable transducer cableterminal connection terminal connectionAV signal X_AV SMB connectorAVS shield X_AR SMB connectorARS shieldAR signal

outputs communication interfaceterminal strip KL9, KL10 terminal strip KL9, KL10terminal connection terminal connection communication inter-

faceP1+...P3+, P1-...P3- switchable current output A+ signal + - Modbus RTU

- Profibus PA- FF H1P1+, P1- current output (HART) B- signal -

P5a...P7a, P5b...P7b binary output S shield

USB - USBLAN - Ethernet

- Modbus TCP

analog inputsterminal strip KL7, KL8

temperature probe passive current source active current sourceterminal direct connection connection with

extension cableterminal connection of an active

inputconnection of a passive input

T1a red red T2a not connected not connectedT1A red/blue grey T2A - +T1b white/blue blue T2b + not connectedT1B white white T2B not connected -S1 shield shield S1 not connected not connected

A+B-P1+P2+P3+P4+P5aP6aP7a

S S P1-P2-P3-P4-P5bP6bP7bX2 X3

X_AV

KL11

KL12

KL7

KL8

KL9

KL10 KL4

X_AR X_BV X_BR

T1A

T1B

S1T2A

T2B

T3A

T3B

S3

T4B

T4A

T1a

T1b

S1T2a

T2b

T3a

T3b

S3

T4b

T4a

N(-)

PE L(+)

AV AVS

AGN

ARS

AR

BVBVS

BGN

BRS

BR

S721**-****Sequipotential bonding terminal

LAN USB



Transducers

Technical data

technical type CDK1N52 CDM2N52 CDM2E52 CDQ2N52 CDQ2E52transducer frequency MHz 0.5 1 4pipe wall thicknessmin. mm 5 2 0.6materialhousing PEEK with stainless

steel cap 304 (1.4301)

PEEK with stainless steel cap 304 (1.4301)

PI with stainless steel cap 304 (1.4301)

PEEK with stainless steel cap 304 (1.4301)

PI with stainless steel cap 304 (1.4301)

contact surface PEEK PEEK PI PEEK PIdegree of protection according to IEC/EN 60529

IP67 IP67 IP56 IP67 IP56

transducer cabletype 1699 1699 6111 1699 6111length m 5 4 4 3 3dimensionslength l mm 126.5 64 40width b mm 51 32 22height h mm 67.5 40.5 25.5dimensional drawing

ambient temperaturemin. °C -40 -40 -30 -40 -30max. °C +130 +130 +200 +130 +200temperature compen-sation

x

l

hb

l

hb

hb

l



Transducer mounting fixture

Variofix C (VC) material: stainless steel 304 (1.4301), 301 (1.4310)

inner length:VCK-*L: 500 mmVCK-*S: 350 mmVCM: 400 mmVCQ: 250 mm

dimensions:VCK-*L: 560 x 122 x 102 mmVCK-*S: 410 x 122 x 102 mm,VCM: 460 x 96 x 80 mmVCQ: 310 x 85 x 62 mm

transducer box WI for WaveInjector

see Technical specificationTSWaveInjectorVx-x

transducer box



Coupling materials for transducers

Technical data

normal temperature range(4th character of transducer order code = N)

extended temperature range(4th character of transducer order code = E)

WaveInjector WI-400

< 100 °C < 170 °C < 150 °C < 200 °C < 280 °C 280...400 °C< 24 h coupling

compound type N or coupling foil type VT

coupling compound type E or coupling foil type VT

coupling compound type E or coupling foil type VT

coupling compound type E or H orcoupling foil type VT

coupling foil type A and coupling foil type VT

coupling foil type B and coupling foil type VT

long time measurement

coupling foil type VT1




coupling foil type A and coupling foil type VT

coupling foil type B and coupling foil type VT

1 < 5 years2 < 6 months

type ambient temperature material°C

coupling compound type N

-30...+130 mineral grease paste

coupling compound type E

-30...+200 silicone paste

coupling compound type H

-30...+250 fluoropolymer paste

coupling foil type A max. 280 lead

coupling foil type B > 280...400 silver

coupling foil type VT -10...+200 fluoroelastomer



Connection systems

Transducer cable

Technical data

connection system TSconnection with extension cable direct connection transducers

technical type*****52

transducer frequency(3d character of transducer

order code)

F, G, H, K M, P Q S

TS

x l x l x l x lcable length m 5 ≤ 300 4 ≤ 300 3 ≤ 90 2 ≤ 40

x - transducer cable lengthl - max. length of extension cable

transducer cable extension cabletype 1699 6111 2615 5245standard length m see table above -max. length m - see table aboveambient temperature °C -55...+200 -100...+225 -30...+70 -30...+70properties halogen free

fire propagation test according to IEC 60332-1

combustion test accor-ding to IEC 60754-2

halogen free

fire propagation test according to IEC 60332-1

combustion test accor-ding to IEC 60754-2

cable jacketmaterial PTFE PFA PUR PURouter diameter mm 2.9 2.7 12 12thickness mm 0.3 0.5 2 2colour brown white black blackshield x x x xsheathmaterial stainless steel 304

(1.4301)stainless steel 304 (1.4301)

- steel wire braid with copolymer sheath

option OS: 316Ti (1.4571) option OS: 316Ti (1.4571)outer diameter mm 8 8 - 15.6

tra

nsm

itter

x

l

JB03

tran

smitt

er

x



Junction box

Technical data

Dimensions

2" pipe mounting kit (optional)

technical type JB03dimensions see dimensional drawingweight kg 1.2 kgfixation wall mounting, optional: 2" pipe

mountingmaterialhousing stainless steel 316L (1.4404)gasket siliconedegree of protection according to IEC/EN 60529

IP67

ambient temperaturemin. °C -40max. °C +80

in mm

174

1192

wall mounting holder

70163.5

156

Ø 9

thread: 3x M20 x 1.5cable gland: max. 2x M20



Terminal assignment

JB03

transducers

terminal connectionXV transducer , SMB connectorXR transducer , SMB connectorcable gland external shield

extension cable

terminal strip KL2terminal connectionTV signalTVS internal shieldTRS internal shieldTR signalshield terminal external shield

shield terminal

equipotential bonding terminal(at wall mounting holder)



Clamp-on temperature probe (optional)

Technical data

technical type PT12Ndesigntype Pt100connection 4-wiremeasuring range °C -30...+250

accuracy T ±(0.15 °C + 2 . 10-3 . |T [°C]|)class A

accuracy ∆T(2x Pt matched accor-ding to EN 1434-1)

≤ 0.1 K (3 K < ∆T < 6 K), more corresponding to EN 1434-1

response time s 50housing aluminumdegree of protection according to IEC/EN 60529

IP66

weight (without con-nector)

kg 0.25

fixation clamp-onaccessoriesthermal conductivity foil 250 °C

x

dimensionslength l mm 15width b mm 15height h mm 20

connection with extension cable direct connection

extension cable

junction box

l

h



Connection

Temperature probe

Cable

cable of temperature probe

extension cable

type 4 x 0.25 mm² black LIYCY 8 x 0.14 mm² greystandard length m 3 5/10/25max. length m - 200cable jacket PTFE PVC

Junction boxtechnical type JBT3dimensions see dimensional drawingfixation wall mounting

optional: 2" pipe mountingmaterialhousing stainless steel 316L (1.4404)gasket siliconedegree of protection according to IEC/EN 60529

IP67

cable gland max. 2x M12ambient temperaturemin. °C -40max. °C +80

Terminal assignment

JBT2, JBT3

red/blue red white/blue white

temperature probe

terminal strip KL1terminal connection

1 red2 red/blue3 white4 white/blue

extension cable

terminal strip KL2terminal connection

1 red2 grey3 white4 blue

shield terminal

equipotential bonding terminal(at wall mounting holder)



FLEXIM GmbH

Wolfener Str. 36

12681 Berlin

Germany

Tel.: +49 (30) 93 66 76 60

Fax: +49 (30) 93 66 76 80

internet: www.flexim.com

e-mail: [email protected]

Subject to change without notification. Errors excepted.

PIOX® is a registered trademark of FLEXIM GmbH.

Documents

Ultrasonic measurement of sulfuric acid - FLEXIM · Ultrasonic measurement of sulfuric acid ... acid in sulfuric acid production facilities ... • No contact with the fluid,