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5.4 Repairs

If you return a Promag 31 measuring unit to Hauser for repair, please
enclose a note giving the following information:

•

Description of the application

•

Description of the fault

•

Chemical and physical properties of the medium measured.

Caution!
Please carry out the following before you return the Promag 31 unit for repair:

•

Remove all traces of the medium still adhering.

•

This is particularly important if the medium is harmful for health, i.e. caustic,
poisonous, cancerogenous, radioactive, etc. Please ensure that full handling details
i.e. “Fluid Data Sheets” are enclosed.

•

We must request you not to return a unit if it is not completely certain that harmful
substances can be removed (e.g. cracks have been penetrated or substances
have diffused through plastics).

Incomplete cleaning of the instrument may result in waste disposal or cause harm to
personnel (burns, etc). Any costs arising from this will be charged to the owner of the
instrument.

Promag 31

5. Fault Location and Remedies

Hauser

43

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Содержание promag 31

Страница 1: ...promag 31 Electromagnetic Flow Measuring System BA 028D 06 e 02 97 No 50084257 valid from software version V3 01 XX measuring amplifier Cold Water Fiscal Metering Operating Manual ...

Страница 2: ...al resistance properties of wetted parts The installer has to make sure that the measuring system is correctly wired according to the wiring diagrams The measuring system is to be grounded Please observe all provisions valid for your country and pertaining to the opening and repairing of electrical devices Repairs Dangerous Chemicals The following procedures must be carried out before a Promag 31 ...

Страница 3: ...strument Functions 29 4 2 Setting unit parameters with miniature switches 33 4 3 Local display 36 4 4 Commissioning 38 5 Fault Location and Remedies 39 5 1 Behaviour of the measuring equipment in the event of a fault or alarm 39 5 2 Instructions for fault location and remedies 40 5 3 Replacing the transmitter electronics 41 5 4 Repairs 43 6 Technical Data 45 6 1 Dimensions and weights 45 6 2 Techn...

Страница 4: ...Promag 31 4 Endress Hauser ...

Страница 5: ... 2 Principle of measurement In accordance with Faraday s law of induction a voltage is induced in a conductor that is moved through a magnetic field In the magneto inductive principle of measurement the flowing medium represents the moving conductor The induced voltage is proportional to the flow velocity and is fed to the measuring amplifier by a pair of electrodes Across the cross section of the...

Страница 6: ... with different Ex certificates Information about the current status can be found from your existing E H representive Furthermore all relevant Ex informations and the specifications of the certificates can always be obtained from your E H representative Sensor Equipment of transmitter Promag F DN 15 300 Promag F DN 350 2000 Power pack board 85 260 V AC or Power pack board 20 55 V AC 16 62 V DC Amp...

Страница 7: ...om 10 200 m distance max cable length in terms of the medium conductivity 5 200 µS cm FL version Max cable length 200 m not dependent on conductivity No EPD available The electrical connection between transmitter and sensor is made in the connection housing Compact version The Promag 31 transmitter and the sensor together form a mechanical unit Promag F Promag 31 Promag 31 F ba028y03 Fig 3 Promag ...

Страница 8: ... the trigger of the display tests A measuremement calculation under pressure or the interuption of the totalisers is not possible through the auxiliary inputs Status output and auxiliary input must be wired by the user of the system Cable entry Measuring electrodes Reference electrode Screw cover of electronic compartment 6 parameters can be set here with internal miniature switches Option local d...

Страница 9: ...omag 31 measuring amplifier has a very high dynamic response of over 1000 1 It measures at medium velocities from less than 10 mm s to over 10 m s with the specified accuracy When the flow is pulsating the amplifier is not over driven even above the end value setting at maximum speeds up to 12 5 m s There is then no falsification of the measured value provided the outputs are not over driven Fisca...

Страница 10: ...y of the measuring system assures high safety Any system error messages coil current error amplifier error DAT error EEPROM error ROM error RAM error or a power supply failure that do occur are emitted at the configured status output In the event of a power supply failure all data of the measuring system are securely stored in the EEPROM without a backup battery The Promag 30 measuring system fulf...

Страница 11: ...ion must possess the stipulated outside diameter see Chapter 6 3 Tighten the cable entry see Fig 5 Loop the cable before inserting This prevents moisture from penetrating the cable entry see Fig 5 Any cable entries not used must be stopped with a screw plug The protective grommet must not be removed from the cable entry Caution The screws of the Promag sensor housing must not be released otherwise...

Страница 12: ...unting the sensor in the piping The sensor should not be lifted by the connection housing The sensor should not be lifted by the sheet casing using a forklift truck This can buckle the casing and damage the internal magnetic coils Base of the sensor The sensor should stand on a base which is sufficiently strong to withstand its weight Note The sensor must not be supported by the sheet casing This ...

Страница 13: ...m rise away from the electrodes b Horizontal mounting The axis of the electrodes must be horizontal thus preventing brief insulation of the electrodes by entrained air bubbles Vibration Fasten the piping before and after the sensor Caution Excessive vibration necessitates separate mounting of the sensor and transmitter see Chapter 2 6 With free runs of piping over 10 m long we recommend mechanical...

Страница 14: ...r accumulation No installation immediately before an open pipe outlet in a downward line The installation shown in Fig 13 however permits such a location Partly filled pipes For inclines a mounting similar to a drain should be adopted Do not mount at the lowest point risk of solids collecting Added security is offered by Empty Pipe Detection EPD This option has an extra electrode in the measuring ...

Страница 15: ... diameter when suitable adaptors reducers and expanders to DIN 28545 are fitted The resultant increase in the rate of flow increases the accuracy of measurement with slowly flowing fluids The adjacent nomogram can be used to determine the pressure loss caused Procedure 1 Determine the ratio of the diameters d D 2 From the nomogram read off the pressure loss at the flow velocity and d D ratio Note ...

Страница 16: ...trically conductive e g graphite On the inside of the measuring pipe this could result in an electrically conductive layer forming which would short circuit the measuring signal DN Pressure stages Screws Max tightening torque Nm DIN mm ANSI inch DIN bar Hard rubber Soft rubber EPDM Teflon PTFE 15 25 32 40 50 1 2 1 11 2 2 PN 40 4 x M 12 4 x M 12 4 x M 16 4 x M 16 4 x M 16 25 40 50 64 5 8 11 15 15 3...

Страница 17: ...lace and clean 2 Connect the rotary arm b and electrodes together using the pins h Ensure that the small coil spring is in place 3 Pull back the electrode as far as possible so that the tip does not protrude out from the hold ing cylinder g 4 Screw the holding cylinder onto the shut off unit I and tighten by hand Note Gasket j on the holding cylinder must be in place and clean 5 Open the shut off ...

Страница 18: ...is the corresponding mark ing notches on the side of the bayonet flanges should be brought into alignment Do not damage the cable to the sensor when lifting the transmitter housing 4 Turn the transmitter housing into the desired position Engage the bayonet catch and re tighten the two screws ba028y18 Fig 20 Turning the local display Warning Danger from electric shock Switch off the power supply be...

Страница 19: ...r and the sensor Please connect the cable as described on page 23 Conductivity µS cm ba028y20 Transmitter housing Wiring compartment connection housing Wall holder Length of cable for the remote mounted version FS and FL Permissible range Cable length Lmax m Fig 22 Fixing the wall holder Stamped lead seal Compact version Remote version Sealing of compact versions The cover of the electronic compar...

Страница 20: ...alisation for lined pipes with cathodic protection When the medium cannot be earthed for operational reasons the measuring unit must be installed that it is potential free Fig 25 Please pay attention to national regula tions regarding potential free installation e g VDE 0100 It is also important to ensure that the mounting material used does not result in a conductive bond with the measur ing unit...

Страница 21: ...area with severe interference In order to make the most of the electro magnetic compatibility EMC of the Promag 31 it is advisable to provide two flange to flange links and to con nect them jointly with the transmitter housing to earth potential Example Promag 31 F ba028y25 6 mm2 Cu Fig 27 ba028y27 6 mm2 Cu Fig 28 Promag 31 2 Mounting and Installation Endress Hauser 21 ...

Страница 22: ...2 Mounting and Installation Promag 31 22 Endress Hauser ...

Страница 23: ...plate with the local mains voltage and frequency Also pay attention to the national rules for installation 1 Release the safety grip of the screw cover of the terminal compartment using a 3 mm Allen key Then unscrew the cover from the terminal compartment of the transmitter 2 Push the supply cable and signal cable in through the appropriate cable entries 3 Make the connection in accordance with th...

Страница 24: ...four Phillips screws 3 Push both cables signal and coil current cable in through the appropriate cable entries 4 Make the connection between the sensor and transmitter in accordance with the wiring diagrams 5 Tighten the cover of the connection housing securely 6 The sealing of a fiscal measurement system is to be done as described in Chapter 2 6 Note If the sealing is damaged or taken away please...

Страница 25: ...d through Endress Hauser If this version is not available we refer to wiring version 2 Earth terminal ground wire L1 for AC L for DC supply N L Pulse frequency output passive Status output passive Auxiliary input Current output active Earth terminal screen of signal cable fmax 400 Hz max 30 V 250 mA max 30 V 250 mA System process fault indication Flow direction 3 30 V DC Ri 1 8 kΩ self test functi...

Страница 26: ...gh Endress Hauser Remote mounted version FS FL Connection between sensor and transmitter Status Aux IN 24 V DC Status evaluation ba028y71 Button IP 67 RS Components International y PG Promag 31 24 V power supply Fig 33 Promag 31 F FL version Transmitter Promag 31 F FS version Transmitter Sensor Sensor ba028e66 Fig 34 3 Electrical Connection Promag 31 26 Endress Hauser ...

Страница 27: ...al cable 5 x 0 5 mm2 PVC cable with common screen Conductor resistance 37 Ω km Capacitance core core screen earthed 120 pF m Cable specifications for use in areas with severe electrical interference The Promag 31 measuring equipment fulfils all general requirements for electromagnetic compatibility EMC according to EN 50081 Part 1 and 2 EN 50082 Part 1 and 2 when installed in accordance with the N...

Страница 28: ...Promag 31 28 Endress Hauser ...

Страница 29: ...ty of the medium again exceeds v 0 04 m s creep suppression is deactivated Nominal diameter Cut in point Cut off point DIN mm ANSI inch at v 0 02 m s in m3 h at v 0 04 m s in m3 h 15 1 2 0 013 0 025 25 1 0 035 0 071 32 11 4 0 058 0 116 40 11 2 0 090 0 181 50 2 0 141 0 283 65 21 2 0 239 0 478 80 3 0 362 0 724 100 4 0 565 1 131 125 5 0 884 1 767 150 6 1 272 2 545 200 8 2 262 4 524 250 10 3 534 7 069...

Страница 30: ...ucting see Fig 36 1 The error messages are always activated in the fiscal meter Note The behaviour of the outputs in the event of a fault is described in Chapter 5 1 System units Works setting SI units Switch No 3 OFF SI units volume in l m3 US units volume in US gal Note With the fiscal Promag 31 the SI units are always activated Configuration of status output Status Behaviour of open collector o...

Страница 31: ...low to be determined The pulse pause ratio is approx 1 1 The pulse width is limited to a maximum of 2 s 0 25 Hz At f 400 Hz the maximum pulse width is 1 ms For the Promag 31 measuring system eight preset pulse value steps can be selected in terms of the nominal diameter Setting is made by means of three miniature switches see Chapter 4 2 Configuration of status output Operating mode Function Flow ...

Страница 32: ...ve material build up on the electrodes e g magnetite can lead to errors in measurement The electrode cleaning circuit ECC has therefore been developed to prevent such a build up The cleaning cycles are carried out every 30 minutes for 2 5 secs each depending on the scanning frequency If the Promag 31 measuring system is equipped with the electrode cleaning circuit option ECC then this can be switc...

Страница 33: ...he local display 6 Screw the cover to the electronics area securely on the transmitter housing and tighten the Allen screws of the safety grip securely ON Creep suppression On 1 OFF Creep suppression Off 1 ON Status output Flow direction OFF Status output System process fault indication 1 ON US technical units gal OFF SI technical units m3 dm3 ON 0 20 mA current range OFF 4 20 mA current range 1 F...

Страница 34: ... 3 1 m 3 1 m 3 1 m 3 1 m 3 1 m 3 1 m 3 1 m 3 10 m 3 10 m 3 10 m 3 10 m 3 10 m 3 10 m 3 10 m 3 10 m 3 10 m 3 10 dm 3 100 dm 3 100 dm 3 100 dm 3 100 dm 3 100 dm 3 1 m 3 1 m 3 1 m 3 1 m 3 1 m 3 10 m 3 10 m 3 10 m 3 10 m 3 10 m 3 10 m 3 10 m 3 100 m 3 100 m 3 100 m 3 100 m 3 100 m 3 100 m 3 100 m 3 100 m 3 100 m 3 100 dm 3 1 m 3 1 m 3 1 m 3 1 m 3 1 m 3 10 m 3 10 m 3 10 m 3 10 m 3 10 m 3 100 m 3 100 m ...

Страница 35: ... m 3 h 2400 m 3 h 3000 m 3 h 350 200 m 3 h 400 m 3 h 600 m 3 h 800 m 3 h 1000 m 3 h 2000 m 3 h 3200 m 3 h 4000 m 3 h 400 200 m 3 h 400 m 3 h 600 m 3 h 800 m 3 h 1000 m 3 h 2000 m 3 h 3200 m 3 h 4000 m 3 h 450 300 m 3 h 600 m 3 h 900 m 3 h 1200 m 3 h 1500 m 3 h 3000 m 3 h 4800 m 3 h 6000 m 3 h 500 400 m 3 h 800 m 3 h 1200 m 3 h 1600 m 3 h 2000 m 3 h 4000 m 3 h 6400 m 3 h 8000 m 3 h 600 600 m 3 h 12...

Страница 36: ...ppropriate function Selecting the technical units Switching on off the EPD Empty Pipe Detection Starting the empty full pipe adjustment for Empty Pipe Detection ba028y37 LCD 8 character All measured values operating and status indications are shown here 11 Display segments The appropriate segments serve to provide clear information on technical units and current instrument function Current technic...

Страница 37: ...justment Only with non fiscal measurement operation Empty full pipe adjustment for EPD To start adjustment press Set key EPd Ad_F Full pipe adjustment Note Any adjustment has to be done before switching on EPD otherwise the ADJ_ERROR message is displayed During adjustment the message ADJ_BUSY is displayed for about 0 5 s After any adjustment ADJ_DONE is displayed tESt Test function This function c...

Страница 38: ...he terminals Compare the data on the nameplate with the local mains voltage and frequency Does the direction of the arrow on the nameplate sensor agree with the actual direction of flow in the piping If the results of these checks are satisfactory switch on the supply voltage The unit is ready for operation 4 Operation and Commissioning Promag 31 38 Endress Hauser ...

Страница 39: ...uts Status output open i e open collector not conducting see page 36 System error fault failure Process error alarm Supply failure Pulse output No output of pulses until the fault has been cleared Current output The current is set to a definite value until the fault has been cleared 0 20 mA 0 mA 4 20 mA 2 mA Note With measured value suppression the following points are important System errors are ...

Страница 40: ...output set to Signalling system and process errors No Turn switch No 2 OFF see page 33 Yes Does the status output have a high impedance Open collector not conducting ERROR segment visible No No system or process error is present Check the connections to the outputs Check the parameter settings i e switch positions see page 33 Yes Does the status ouput have a low impedance when a voltage of 3 30 V ...

Страница 41: ...e amplifier board 5 Remove the 2 pole plug of the power supply cable by pressing the catch of the power supply board at the same time Fig 43 V4 6 Remove the cable board of the screened signal cable from the amplifier board Fig 44 V5 7 Loosen the two Phillips screws of the board support plate Carefully remove the support plate approx 4 5 cm out of the transmitter housing 8 Remove the coil current c...

Страница 42: ...e ba028y45 Fig 43 Pin base for connecting the flow simulator Flowjack Pin base for DAT module Miniature switches 1 10 Socket base Sockets for flat ribbon plugs connecting with terminal compartment fixing screw Pin base for electrode signal cable Fixing screw Test point 2 ba028y46 Switch for ECC Fig 44 LED for system status 5 Fault Location and Remedies Promag 31 42 Endress Hauser ...

Страница 43: ...ly important if the medium is harmful for health i e caustic poisonous cancerogenous radioactive etc Please ensure that full handling details i e Fluid Data Sheets are enclosed We must request you not to return a unit if it is not completely certain that harmful substances can be removed e g cracks have been penetrated or substances have diffused through plastics Incomplete cleaning of the instrum...

Страница 44: ...5 Fault Location and Remedies Promag 31 44 Endress Hauser ...

Страница 45: ...s of explosion protected versions may differ from the specifications given here These are given in the Ex supplement to this manual Promag 31 F DN 15 300 Compact version Remote mounted version FS FL ba028y46 Fig 45 ba028y47 Fig 46 Promag 31 6 Technical Data Endress Hauser 45 ...

Страница 46: ... 340 5 390 5 390 5 390 5 471 5 471 5 526 5 576 5 626 5 256 5 256 5 256 5 256 5 256 5 281 5 281 5 281 5 321 5 321 5 346 5 371 5 396 5 84 84 84 84 84 109 109 109 150 150 180 205 230 120 120 120 120 120 180 180 180 260 260 324 400 460 94 94 94 94 94 94 94 94 140 140 156 166 166 14 16 18 18 20 18 20 22 24 24 26 28 28 11 2 14 2 17 5 19 1 23 9 23 9 25 4 28 4 30 2 31 8 286 286 286 286 286 336 336 336 417...

Страница 47: ...2 507 532 5 584 5 686 686 707 5 784 860 886 985 1086 1161 1185 1230 1267 1362 1412 282 308 333 358 5 410 5 512 512 533 5 610 686 712 811 912 987 1011 1056 1093 1188 1238 564 616 666 717 821 1024 1024 1067 1220 1372 1424 1622 1824 1974 2022 2112 2186 2376 2476 276 276 292 292 402 589 626 647 785 862 912 992 1252 1252 1392 1482 1482 1632 1732 26 26 28 28 30 32 34 34 28 32 34 36 38 34 9 36 5 39 7 42 ...

Страница 48: ...mperature range 20 60 C Electrode material 1 4435 Platinum Rhodium 80 20 Hastelloy C 22 Tantalum Electrodes fitted DN 15 2000 Measuring reference and EPD electrodes standard for 1 4435 and Hastelloy C 22 Min conductivity 5 µS cm Gasket material Housing material DN 25 300 powder coated die cast aluminium DN 350 2000 varnished steel Type of protection DIN 40050 IP 67 IP 68 option NEMA 4X NEMA 6P as ...

Страница 49: ...ss 150 Class 150 Class 150 Class 150 Class 150 Class 150 Class 150 Class 150 20K 20K 20K 20K 10K 10K 10K 10K 10K 10K 10K 10K 10K 15 26 35 41 52 68 80 105 130 156 207 259 309 337 387 487 593 65 78 100 126 154 205 259 310 341 391 436 491 593 692 741 794 893 995 1042 1195 1338 1401 1491 1599 1637 1799 1981 1995 Sensor DN Lining Limits for vacuum mbar abs at different medium temperatures mm inch 25 C ...

Страница 50: ...PDM 0 80 C hard rubber Note In fiscal metering applications operates within a temperature range of 0 30 C for cold water Caution At high medium and ambient temperatures it is necessary to mount the Promag F sensor and Promag 31 transmitter separately Risk of the electronics becoming over heated Ambient temperature C Medium temperature C Temperature range available only for remote mounted version b...

Страница 51: ... Pressure limitations due to fluid temperature DIN 2413 and 2505 Flange material steel 37 2 Fig 50 Temperature C Pressure bar ba028y52 Pressure limitations due to fluid temperature DIN 2413 and 2505 Flange material stainless steel 1 4571 Fig 51 Promag 31 6 Technical Data Endress Hauser 51 ...

Страница 52: ...20 mA adjustable galvanically separated RL 700 Ω Time constant automatically assigned full scale value can be set Temperature coefficient 0 01 o r C additional error 0 3 o r Pulse output open collector fmax 400 Hz Umax 30 V Imax 250 mA galvanically separated pulse value adjustable pulse pause ratio appr 1 1 pulse width max 2 s Status output open collector Umax 30 V Imax 250 mA Adjustable for Syste...

Страница 53: ...lues incl works setting which can be set by miniature switches in Promag 31 Diameters DN 800 DN 2000 are also approved Measuring points with these diameters are however normally not approved for cold water fiscal metering Qmax 2000 m3 h Metrological Classes DN A m3 h B m3 h mm Qn min Qn max Qn min Qn max 15 0 8 3 1 6 3 25 2 2 8 8 4 4 8 8 32 3 6 15 7 2 15 40 5 6 22 11 3 22 50 9 0 35 15 35 65 15 60 ...

Страница 54: ...in Lowest flow rate from which the measuring unit shall not exceed the maximum permissible error It is dependent on Qn and the metrological class Qt Is the transition flow rate which separates the lower and the upper maximum permissible range from each other with different error values Qt is dependent on Qn and the metrological class Error limits Qmin Qt lower range 5 Qt Qmax upper range 2 Metrolo...

Страница 55: ...en ordering Power supply voltage Within the specified range fluctuation of the supply voltage has no effect Reference conditions DIN 19200 and VDI VDE 2641 Medium temperature 28 C 2 K Ambient temperature 22 C 2 K Heating up time 30 minutes Installation at inlet length 10 x DN reference conditions outlet length 5 x DN Sensor and transmitter are earthed The sensor is mounted centrally in the pipe Me...

Страница 56: ...6 Technical Data Promag 31 56 Endress Hauser ...

Страница 57: ...9 Fiscal use 8 Fiscal capability 9 Flow direction uni bidirectional 31 32 38 Flow rate Nominal diameter 53 Flow velocity 53 Full scale value 32 35 G Gaskets 11 16 Grounding potential equalisation 20 Grounding discs 20 Grounding with severe electrical interference 21 I Instrument functions description 29 Instrument functions setting with switches 33 L Load diagrams pressure temperature 51 M Measure...

Страница 58: ...data 45 Technical data transmitter 52 Temperature ranges sensor 50 Temperature ranges transmitter 52 Terminal compartment 23 Totaliser display 37 Totaliser overrun 37 Transmitter housing turning 18 Transport instructions for sensor DN 350 14 12 Troubleshooting 39 40 Type of fault 39 U Unidirectional measurement 31 Units SI US 33 US units 33 V Vibration 13 W Weights 45 Wiring diagrams 25 26 Works s...

Страница 59: ......

Страница 60: ...o Tel 01 5363455 Fax 011 5363067 Canada Endress Hauser Ltd Burlington Ontario Tel 905 6819292 Fax 905 6819444 Chile DIN Instrumentos Ltda Santiago Tel 02 2050100 Fax 02 2258139 Colombia Colsein Ltd Santafe de Bogota D C Tel 01 2367659 Fax 01 6107868 Costa Rica EURO TEC S A San Jose Tel 0506 2961542 Fax 0506 2961542 Ecuador Insetec Cia Ltda Quito Tel 02 461833 Fax 02 461833 Guatemala ACISA Automati...

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