Technical specification FLUXUS G704CA. Stationary ultrasonic clamp-on system for flow measurement of compressed air and other industrial gases

Transcription

1 Technical specification Stationary ultrasonic clamp-on system for flow measurement of compressed air and other industrial gases Transmitter for permanent outdoor wall or pipe mounting Features Accurate and reliable flow measurement Bidirectional measurement for flow direction detection in compressed-air networks Installation and start-up do not require any pipe work nor any process interruptions Measurement unaffected by gas density, viscosity, dust content and humidity Measurement at extremely low pressure: min. 3 bar(a) in metal pipes 1 bar(a) in plastic pipes Extremely high turndown ratio > 1000:1 High measuring accuracy, even at low flow velocities down to 0.01 m/s Monitoring of small flows (e.g. during the night) Leakage detection For pipe diameters of DN 15...DN 250 Maintenance-free acoustic coupling using permanent coupling material Support of numerous fieldbus systems ATEX, IECEx, FM Class I Div. 2 approved transducers for hazardous areas available Applications Variofix L Industrial manufacturing facilities: Air compressors and compressed-air distribution networks Pressure generators and distribution networks for inert or purge gases Pressure generators and distribution networks for oxygen, e.g. for steel production Measurement of atmospheric gases consumption: compressed air, nitrogen, oxygen, argon TSFLUXUS_G704CAV2-2EN_Leu,

2 Technical specification Table of contents Function Measurement principle Calculation of volumetric flow rate Standard volumetric flow rate Number of sound paths Typical measurement setup Transmitter Technical data Dimensions " pipe mounting kit Terminal assignment Transducers Technical data Transducer mounting fixture Coupling materials for transducers Damping mats (optional) Connection systems Junction box Technical data Dimensions " pipe mounting kit Clamp-on temperature probe (optional) Technical data Fixation Junction box Pressure transmitter (optional) Technical data , TSFLUXUS_G704CAV2-2EN_Leu

3 Technical specification Function Measurement principle The transducers are mounted on the pipe which is completely filled with the fluid. The ultrasonic signals are emitted alternately by a transducer and received by the other. The physical quantities are determined from the transit times of the ultrasonic signals. Path of the ultrasonic signal in the flowing fluid As the fluid where the ultrasound propagates is flowing, the transit time of the ultrasonic signal in flow direction is shorter than the one against the flow direction. The transit time difference t is measured and allows the flowmeter to determine the average flow velocity along the propagation path of the ultrasonic signals. A flow profile correction is then performed in order to obtain the area averaged flow velocity, which is proportional to the volumetric flow rate. The integrated microprocessors control the entire measuring cycle. The received ultrasonic signals are checked for measurement usability and evaluated for their reliability. Noise signals are eliminated. Transit time difference t t 0 t Calculation of volumetric flow rate t V = k Re A k a t where V - volumetric flow rate k Re - fluid mechanics calibration factor A - cross-sectional pipe area k a - acoustical calibration factor t - transit time difference t γ - average of transit times in the fluid TSFLUXUS_G704CAV2-2EN_Leu,

4 Technical specification Standard volumetric flow rate The standard volumetric flow rate can be selected as physical quantity to be measured. It will be calculated internally by: V N = V T ---- N p N T K where V N - standard volumetric flow rate V - operating volumetric flow rate p N - standard pressure (absolute value) p - operating pressure (absolute value) T N - standard temperature in K T - operating temperature in K K compressibility coefficient of the gas: ratio of the compressibility factors of the gas at operating conditions and at standard conditions Z/Z N The operational pressure p and the operational temperature T of the fluid will be entered directly as fixed values into the transmitter. or: If inputs are installed (optional), pressure and temperature can be measured by the customer and fed in the transmitter. The gas compressibility coefficient K of the gas is entered in the transmitter: as fixed value or as approximation according to e.g. AGA8 or GERG , TSFLUXUS_G704CAV2-2EN_Leu

5 Technical specification Number of sound paths The number of sound paths is the number of transits of the ultrasonic signal through the fluid in the pipe. Depending on the number of sound paths, the following methods of installation exist: reflection arrangement The number of sound paths is even. The transducers are mounted on the same side of the pipe. Correct positioning of the transducers is easier. diagonal arrangement The number of sound paths is odd. 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 paths increases the accuracy of the measurement, signal attenuation increases as well. The optimum number of sound 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 diagonal arrangement, the number of sound paths can be adjusted optimally for the application. Reflection arrangement, number of sound paths: 2 a Diagonal arrangement, number of sound paths: 3 a Diagonal arrangement, number of sound paths: 1 Diagonal arrangement, number of sound paths: 1, negative transducer distance a > 0 a < 0 a - transducer distance Typical measurement setup Example of a reflection arrangement with connection of the inputs to an external process pressure and process temperature measurement for standard volumetric flow rate calculation transducers damping mat transmitter e.g. external pressure sensor temperature probe inputs TSFLUXUS_G704CAV2-2EN_Leu,

6 Technical specification Transmitter Technical data -NN -A2 (Standard) -NN -A2 (Dual) -F2 (Standard) -F2 (Dual) design standard field device, nonex or ATEX/IECEx standard field device, FM Class I Div. 2 application flow measurement of compressed air and industrial gases measurement measurement principle transit time difference correlation principle flow velocity m/s , depending on pipe diameter repeatability 0.15 % of reading ±0.01 m/s fluid compressed air, oxygen, nitrogen, argon temperature compensation corresponding to the recommendations in ANSI/ASME MFC accuracy volumetric flow rate ±1...3 % of reading ±0.01 m/s depending on application ±0.5 % of reading ±0.01 m/s with field calibration transmitter power supply V/ Hz or V DC or V DC power consumption W < 15 number of measuring channels damping s (adjustable) measuring cycle Hz (1 channel) response time s 1 (1 channel), option: 0.07 housing material aluminum, powder coated degree of protection IP65 dimensions mm see dimensional drawing weight kg 3.1 fixation wall mounting, optional: 2" pipe mounting ambient temperature C C (< -20 C without operation of the display) C display 2 x 16 characters, dot matrix, backlight menu language English, German, French, Dutch, Spanish explosion protection ATEX/IECEx transmitter G704**-A2 - marking II3G II2D Ex na nc ic IIC T4 Gc Ex tb IIIC T 120 C Db T a C certification ATEX IBExU11ATEX certification IECEx IECEx IBE FM marking - G70[1 or 2]Z2**[1 or 2]: NI/Cl. I,II,III/Div. 2/ GP. A,B,C,D,E,F,G/ T5 Ta = 60 C G70[1 or 2]Z2**9: NI/Cl. I,II,III/Div. 2/ GP. A,B,C,D,E,F,G/ T4A Ta = 55 C measuring functions physical quantities operating volumetric flow rate, standard volumetric flow rate, mass flow rate, flow velocity totalizer volume, mass calculation functions - average, difference, sum - average, difference, sum diagnostic functions sound speed, signal amplitude, SNR, SCNR, standard deviation of amplitudes and transit times 1 outside of explosive atmosphere (housing cover open) , TSFLUXUS_G704CAV2-2EN_Leu

7 Technical specification -NN -A2 (Standard) communication interfaces service interfaces RS232 1 USB (with adapter) 1 process interfaces max. 1 option: RS485 (ASCII sender) Modbus RTU BACnet MS/TP M-Bus (nonex) accessories serial data kit сable RS232 1 adapter RS232 - USB 1 -NN -A2 (Dual) -F2 (Standard) max. 1 option: RS485 (ASCII sender) Modbus RTU BACnet MS/TP software FluxDiagReader: download of measured values and parameters, graphical presentation FluxDiag (optional): download of measurement data, graphical presentation, report generation data logger loggable values all physical quantities, totalized values and diagnostic values capacity > measured values outputs The outputs are galvanically isolated from the transmitter. switchable current output The switchable current outputs are menu selectable all together as passive or active. number range ma ( ) accuracy 0.04 % of reading ±3 μa active output R ext < 350 Ω passive output U ext = V, depending on R ext, R ext < 1 kω binary output number 3 optorelay 26 V/100 ma binary output as alarm output functions limit, change of flow direction or error binary output as pulse output functions mainly for totalizing pulse value units pulse width ms inputs The inputs are galvanically isolated from the transmitter. temperature input number type Pt100/Pt1000 connection 4-wire range C resolution K 0.01 accuracy ±0.01 % of reading ±0.03 K current input number accuracy 0.1 % of reading ±10 μa active input U int = 24 V, R int = 50 Ω, P int < 0.5 W, not short-circuit proof range ma ma passive input R int = 50 Ω, P int < 0.3 W range ma outside of explosive atmosphere (housing cover open) -F2 (Dual) TSFLUXUS_G704CAV2-2EN_Leu,

8 Technical specification Dimensions * ø fixing holes for wall mounting in mm thread: 6x M20 x 1.5 cable gland: max. 6x M20 2" pipe mounting kit * , TSFLUXUS_G704CAV2-2EN_Leu

9 Technical specification Terminal assignment *704 equipotential bonding terminal (FLUXUS G704**-A2) power supply 1 terminal connection (AC) connection (DC) PE earth earth N(-) neutral - L(+) phase + transducers extension cable transducer cable measuring channel A measuring channel B measuring channel A measuring channel B terminal connection terminal connection transducer terminal connection AV signal BV signal X_AV X_BV SMB connector AVS shield BVS shield ARS shield BRS shield X_AR X_BR SMB connector AR signal BR signal outputs 1, 2 terminal connection terminal connection communication interface P1+...P2+ current output A+ signal + RS485 P1-...P2- P5a...P7a P5b...P7b binary output B- signal shield Modbus RTU BACnet MS/TP M-Bus temperature probe passive sensor active sensor terminal direct connection connection with extension connection connection cable T1a...T4a red red not connected not connected T1A...T4A red/blue grey - + T1b...T4b white/blue blue + not connected T1B...T4B white white not connected - S1, S3 shield shield not connected not connected 1 сable (by customer): e.g. flexible leads, with insulated wire end ferrules, lead cross sectional area: mm 2 2 The number, type and terminal assignment will be customized. TSFLUXUS_G704CAV2-2EN_Leu,

10 Technical specification Transducers Technical data Lamb wave transducers technical type G(RT)K1N52 G(RT)M1N52 G(RT)P1N52 transducer frequency MHz fluid pressure 1 min. extended bar metal pipe: 10 (d > 120 mm) 3 (d < 120 mm) metal pipe: 3 (d < 60 mm) min. bar metal pipe: metal pipe: 15 (d > 120 mm) 10 (d > 60 mm) 10 (d < 120 mm) 5 (d < 60 mm) plastic pipe: 1 plastic pipe: 1 metal pipe: 3 (d < 35 mm) inner pipe diameter min. extended mm min. recommended mm max. recommended mm max. extended mm pipe wall thickness min. mm max. mm material housing PPSU with stainless steel cap 304 (1.4301) contact surface PPSU degree of protection IP67 IP65 transducer cable type 1699 length m 5 4 length (***-*****/LC) m 9 dimensions length l mm width b mm height h mm dimensional drawing metal pipe: 10 (d > 35 mm) 5 (d < 35 mm) plastic pipe: 1 h l l b b h weight (without cable) kg ambient temperature min. C -40 max. C +170 temperature compensation x explosion protection ATEX/IECEx explosion protection temperature (pipe surface) min. C -55 max. C gas: +150, dust: +140 marking II3G 0637 II2D Ex na IIC T6...T2 Gc Ex tb IIIC TX Db certification ATEX IBExU10ATEX1163 X certification IECEx IECEx IBE X FM explosion protection temperature min. C -40 max. C +165 degree of protection IP66 marking NI/Cl. I,II,III/Div. 2 / GP A,B,C,D,E,F,G/ Temp. Codes dwg depending on application, typical absolute value for compressed air, nitrogen, argon , TSFLUXUS_G704CAV2-2EN_Leu

11 Technical specification Transducer mounting fixture Variofix L (VLK, VLM) material: stainless steel 304 (1.4301), 301 (1.4310), 410 (1.4006) inner length: VLK: 348 mm VLM: 234 mm dimensions: VLK: 423 x 90 x 93 mm VLM: 309 x 57 x 63 mm Coupling materials for transducers type ambient temperature material C coupling compound type N mineral grease paste coupling foil type VT fluoroelastomer TSFLUXUS_G704CAV2-2EN_Leu,

12 Technical specification Damping mats (optional) Damping mats will be used for the gas measurement to reduce acoustic noise influences on the measurement. transducer damping mat Transducer damping mats will be installed below the transducers. pipe damping mat Pipe damping mats will be installed if the sound propagation is disturbed at reflection points (e.g. flange, weld). Depending on the noise, the pipe damping mats will be installed at one or both sides of the transducer damping mat. If the local conditions are unknown, pipe damping mats should be installed. outer pipe diameter 900 mm outer pipe diameter < 900 mm diagonal arrangement reflection arrangement installation length pipe damping mat (optional) transducer damping mat Technical data type E30R4 E30R3 width mm thickness mm 0.7 length (per roll) m 10 weight kg/ m ambient temperature C properties self-adhesive Dimensioning transducer transducer mounting fixture damping mat order code type number of layers transducer damping mat max. installation length number of rolls 1 transducer damping mat + 2x pipe damping mat max. installation length number of rolls 1 [mm] standard 2 extended 2 [mm] standard extended VarioFix L VLK GLK E30R VLM GLM E30R GLP calculation on the base of: max. installation length (installation of one transducer mounting fixture per transducer in reflection arrangement) and max. recommended pipe diameter (standard) or max. extended pipe diameter (extended) 2 calculation for the number of rolls when both transducers are mounted in one transducer mounting fixture (reflection arrangement) or in diagonal arrangement: number of rolls/2 and round up to the nearest integer , TSFLUXUS_G704CAV2-2EN_Leu

13 Technical specification Connection systems connection system TS connection with extension cable direct connection transducers technical type *****52 JB02, JB03 x transmitter x l transmitter Cable transducer cable type 1699 weight kg/ m ambient temperature C cable jacket material PTFE outer diameter mm 2.9 thickness mm 0.3 colour brown shield x sheath material stainless steel 304 (1.4301) option OS: 316Ti (1.4571) outer diameter mm 8 extension cable type weight kg/ m ambient temperature C properties halogen free halogen free fire propagation test according fire propagation test according to IEC combustion test according to IEC to IEC combustion test according to IEC cable jacket material PUR PUR outer diameter mm thickness mm 2 2 colour black black shield x x sheath material - steel wire braid with copolymer sheath outer diameter mm Cable length transducer F, G, H, K M, P Q S frequency connection system TS transducers technical type x l x l x l x l *D***5* m option LC: *L***5* m x - transducer cable length l - max. length of extension cable (depending on application) TSFLUXUS_G704CAV2-2EN_Leu,

14 Technical specification Junction box Technical data JB02, JB03, JB04 weight kg 1.2 kg fixation wall mounting optional: 2" pipe mounting material housing stainless steel 316L (1.4404) gasket silicone degree of protection IP67 ambient temperature min. C -40 max. C +80 explosion protection ATEX junction box JB02 marking II3G Ex na IIC (T6)...T4 Gc II3D Ex tc IIIC T 100 C Dc Ta (70)80 C FM junction box JB04 marking NI/Cl. I,II,III/Div. 2 / GP A,B,C,D,E,F,G/ T6 Ta = C connection transducers terminal connection transducer XV SMB connector XR SMB connector extension cable terminal strip terminal connection KL2 TV signal TVS internal shield TRS internal shield TR signal Dimensions JB0*, JBP* wall mounting holder Ø thread: 3x M20 x 1.5 cable gland: max. 2x M20 in mm , TSFLUXUS_G704CAV2-2EN_Leu

15 Technical specification 2" pipe mounting kit JB** TSFLUXUS_G704CAV2-2EN_Leu,

16 Technical specification Clamp-on temperature probe (optional) Technical data PT12N, PT12N-LC design clamp-on nonex or ATEX option: with long cable (nonex) type Pt100 connection 4-wire measuring range C accuracy T ±(0.15 C T [ C] ) class A accuracy T (2x Pt matched according to EN ) response time s 50 housing aluminum degree of protection IP66 dimensions length l mm 20 width b mm 15 height h mm 13 dimensional drawing b 0.1 K (3 K < T < 6 K), more corresponding to EN l h connection system connection with extension cable extension cable connection temperature probe red junction box direct connection red/blue weight kg 0.25 accessories thermal conductivity foil 250 C x explosion protection (optional) ATEX (PT12N) marking II3G Ex na IIC T6...T2 Gc Ta C сable white/blue white PT12N PT12N-LC extension cable type 4 x 0.25 mm² black LIYCY 8 x 0.14 mm² grey standard length m /10/25 max. length m cable jacket PTFE PVC PT12F design clamp-on short response time type Pt100 connection 4-wire measuring range C accuracy T ±(0.15 C T [ C] ) class A accuracy T (2x Pt matched 0.1 K (3 K < T < 6 K), more corresponding to EN 1434 according to EN ) response time s 8 housing PEEK, stainless steel 304 (1.4301), copper degree of protection IP66 dimensions length l mm 14 width b mm 30 height h mm 27 dimensional drawing l b h connection system connection with extension cable extension cable connection junction box direct connection temperature probe red red/blue weight kg 0.32 accessories thermal conductivity x paste 200 C thermal conductivity x foil 250 C plastic protection plate, insulation foam x сable white/blue white temperature probe extension cable type 4 x 0.25 mm² black LIYCY 8 x 0.14 mm² grey standard length m 3 5/10/25 max. length m cable jacket PTFE PVC , TSFLUXUS_G704CAV2-2EN_Leu

17 Technical specification Fixation tension strap PT12N material: stainless steel 301 (1.4310), 410 (1.4006) ball chain PT12F material: stainless steel 316L (1.4404) length: 1 m Junction box JBT2, JBT3 weight kg 1.2 kg fixation wall mounting optional: 2" pipe mounting material housing stainless steel 316L (1.4404) gasket silicone degree of protection IP67 ambient temperature min. C -40 max. C +80 explosion protection ATEX junction box JBT2 marking II3G Ex na IIC (T6)...T4 Gc II3D Ex tc IIIC T 100 C Dc Ta (70)80 C connection temperature probe terminal strip terminal connection KL1 1 red 2 red/blue 3 white 4 white/blue extension cable terminal strip terminal connection KL2 1 red 2 grey 3 white 4 blue TSFLUXUS_G704CAV2-2EN_Leu,

18 Technical specification Dimensions JBTx wall mounting holder in mm Ø thread: 3x M20 x 1.5 cable gland: max. 2x M12 2" pipe mounting kit JBxx , TSFLUXUS_G704CAV2-2EN_Leu

19 Technical specification Pressure transmitter (optional) Technical data Nöding P 121 connection 2-wire measuring range bar a fluid pressure bar a accuracy ±0.2 % FS 0.1 bar at 25 C temperature coefficient ±0.015 % FS/K (zero) ±0.01 % FS/K (span) long term stability ±0.15 % per year response time ms 200 (T 90 ) power supply V DC ambient temperature C fluid temperature C max. 125 (< 0.5 h) material housing stainless steel 316L (1.4404) measuring cell Al 2 O 3 process connection stainless steel 316L (1.4404) process gasket FPM degree of protection IP65 weight (without kg connector) current output ma Dimensions in mm connection connector pin 1(+) 2(-) G1/2 Ø Ø сable 8038 type 2 x 0.5 mm² standard length m 5 15 weight kg/ m ambient temperature C bend radius mm min. 29 properties self-extinguishing, flame retardant according to IEC cable jacket material PVC outer diameter mm 5.7 colour grey shield x TSFLUXUS_G704CAV2-2EN_Leu,

20 FLEXIM GmbH Boxberger Str Berlin Germany Tel.: +49 (30) Fax: +49 (30) internet: info@flexim.com Subject to change without notification. Errors excepted. FLUXUS is a registered trademark of FLEXIM GmbH. Copyright ( ) FLEXIM GmbH , TSFLUXUS_G704CAV2-2EN_Leu