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Electromagnetic Flowmeter M-910 

 

 

 

 

   4

 

 

Operation manual

 

 

1  Basic information 

1.1  Basic features 

 

The inductive flow meter M-910

 is designed to measure, indicate and record the instantaneous and total flow of 

the conductive media flowing through the sensor. The flow meter M-910 records both forward and reverse flows. 

As  there  are  no  moving  parts  in  the  flow  profile  the  M-910  can  be  used  to  measure  extremely  dirty  liquids 

containing solids. The only limitation is that the flowmeter can be used solely with conductive liquids. 

Range of applications.

 The inductive flow meter M-910 is for use in the Chemical Industry, Paper Industry, Water 

and Wastewater Treatment Industry and most other process industries.  

Features. 

The inductive flowmeter M-910 is a highly accurate and stable device. The construction of the M-910 

flowmeter  uses  components with long-term, time and temperature stability. Configuration data is backed up and 

can be recovered after a power failure. The back-up structure enables data recovery even if a partial loss of data 

occurs as  a  result  of (e.g. high level electrostatic discharge or a noisy power  supply).  Internal CPU provides all 

functions  usually  built  in  electronic  flow  meters,  incl.  low  flow  rate  correction,  frequency  response  setting, 

bandwidth of sensitivity setting at low flow rates, etc.  

Outputs.

  Flowmeter  M-910  is  equipped  with  6  standard  isolated  outputs:  4  to  20mA  either  active  or  passive, 

frequency  output,  impulse  output, status (relays) output,  RS485 and RS232 output. The user can  configure both 

frequency and pulse output.        

Power supply.

 Both versions of the standard 115V/230V power supply and 24V DC/AC power supply are 

available. 

 
 

1.2  Standards and approvals 

Electromagnetic flowmeter is conformed to requirements for bearing CE mark. 

 

 

 

 

 

 

 

• 

Electromagnetic  flowmeter  electronic  unit,  both  remote  and  compact  version  meet  safety  requirements 

according to standard EN 61010-1 including amendment A2. 

 

• 

Electromagnetic  flowmeter  electronic  unit,  both  remote  and  compact  version  meets  EMC  requirements 

according to standard EN 61000-3, EN 61000-4, EN 61000-6 

 

• 

Pipe with sensor meets requirements of Pressure Equipment Directive 97/23/EC. 

• 

Both the pipe and electronic unit, meet the requirements of degree of protection provided by enclosure level 

IP67, according to EN 60529 (IEC 529). 

 

 

Summary of Contents for MAG 910

Page 1: ...MAG 910 MAGNETIC INDUCTIVE FLOWMETER COMPACT VERSION Operating Instructions 10 2003 ...

Page 2: ...32 ___________________________________________________________19 5 Operation_____________________________________________________________ 20 5 1 Main menu ________________________________________________________________20 5 1 1 Current Flowrate Total Volume_________________________________________________ 20 5 1 2 Positive Volume _______________________________________________________________ 20 5...

Page 3: ...INT 4 _________________________________________ 32 5 2 4 6 Calibration Password 4 6 PASSWORD CA ____________________________________ 32 6 System control_________________________________________________________ 34 6 1 RS485 bus properties ________________________________________________________ 34 6 2 RS232 bus properties ________________________________________________________ 34 6 3 Command synta...

Page 4: ... a result of e g high level electrostatic discharge or a noisy power supply Internal CPU provides all functions usually built in electronic flow meters incl low flow rate correction frequency response setting bandwidth of sensitivity setting at low flow rates etc Outputs Flowmeter M 910 is equipped with 6 standard isolated outputs 4 to 20mA either active or passive frequency output impulse output ...

Page 5: ...tems as i e accumulators batteries pushbuttons after attained life time ribbons etc In case of a warranty claim the user is asked to give detailed description of the defect and also of the application for which you use the product This information is important in order to avoid time and cost extensive tests and for the eventual achievement of warranty claims from our suppliers and sub suppliers Fo...

Page 6: ...led according to chapter Installation Only a power supply with the appropriate voltage and frequency should be used The flowmeter can be supplied with either 230 115V 50 60Hz or 24V 12V 48V DC AC power supply see ordering information in chapter Power supply 2 2 Fuse replacement A mains fuse is located behind the back cover The fuse must only be exchanged by a competent person Procedure is as follo...

Page 7: ...sed for 24 and 48 V DC AC versions 2A fuse is used for 12 V DC AC version 2 3 Power supply From a power supply point of view the flowmeter is delivered in four basic versions 115 230V 10 20 50 60Hz automatic switching 12V DC 20 10 12V 50 60Hz 10 10 24V DC 20 10 24V 50 60Hz 10 10 48V DC 20 10 48V 50 60Hz 10 10 ...

Page 8: ...he best way to achieve this is to locate the sensor in a low section of pipe see the following picture It is recommended to install the sensor in a section of straight pipe with at least 5 times the pipe diameter before sensor and 3 times after sensor Pipe reducers If the pipe diameter is not the same as the diameter of sensor then pipe reducers can be used So as not to lose accuracy of the measur...

Page 9: ...rtical section of pipe the flow direction must be upwards In the case of a downward flow direction air bubbles can collect in the sensor and the measurement could be unstable and inaccurate Pumps Never install the sensor on the suction side of a pump or on a section of pipe where a vacuum is possible 8 ...

Page 10: ...ect both electronic unit and sensor against mechanical vibrations When strong vibrations are possible both the input and output pipe must be mechanically fixed or the remote version with a separate electronic unit should be used Overheating To avoid overheating the electronic unit should be protected against direct sunlight especially in areas with a warm climate with ambient temperatures over 30 ...

Page 11: ...ch or circuit breaker should be located close to the flowmeter Cable cross section as above 3 2 1 Compact version To connect the compact version to the power supply the following procedure should be used Unscrew the back cover using the special wrench standard part of delivery Connect the earth wire yellow green colour to the central grounding point inside the case The end of earth wire must be ho...

Page 12: ... non electrically conductive material or if the pipe is lined with a similar material special grounding rings must be installed between flanges Note The flowmeter must not be switched on if the sensor is not connected earthed to the rest of pipeline 3 4 Turning the display panel The flowmeter M910 display can rotated 90 Procedure is as follows Disconnect the power supply from the flowmeter Unscrew...

Page 13: ...ronic circuits 2 Display Two row alphanumerical display is used for displaying all information The instantaneous flowrate is displayed in upper row Total volume is displayed in the lower row The decimal point position and type of units can be changed in the flowmeter Setup Menu see chapter Flowmeter configuration 3 Keyboard 4 keys enable you to change flowmeter configuration and provide flowmeter ...

Page 14: ...net is equal to pushing the UP key Activating the sensor more than 3 seconds is equal to pushing RIGHT key 4 2 Rear panel inputs outputs Under the back cover of the electronic unit are the terminals for input output signals and supply terminals The fuse holder is located near the power supply terminals The top cable gland is for input output signals cable bottom cable gland for power supply cable ...

Page 15: ...s the outputs are galvanically isolated from all other electronic circuits of the flowmeter Voltage drop on passive current loop is 4 V Active current loop can work to a maximum of 800 Ω Example of current output connection For more information about current output see chapter Input and outputs configuration Current loop Impulse output Frequency output Status output PLC input RS485 interface Power...

Page 16: ...this power supply terminal nr 1 must be less than 40 mA Active frequency output is galvanically connected to current output 4 3 3 Impulse output The impulse output is formed by a galvanically isolated transistor NPN switch Voltage drop on the switch is 1 V in the made mode Maximum switched voltage is 50 V Maximum switched current should not exceed 100 mA Positive output is on terminal 6 negative o...

Page 17: ...f from this power supply terminal nr 1 must be less than 40 mA Active status output is galvanically connected to the current output 4 3 5 PLC digital input The digital input is activated with a DC voltage between 5 and 30 V positive or negative The digital input is between terminals 9 and 10 For more information about digital input see chapter Input and outputs configuration Note PLC digital input...

Page 18: ...us It can be ordered as M900 option Note Communication through the serial port RS485 is a half duplex type The flowmeter is a listener and sends data only after a query from a computer Each flowmeter has it s own RS485 address The range of addresses is 0 to 255 Factory setting of RS485 address is 0 Communication speed is selectable between 1200 and 19200 Bd For cables over 100m or if there is a no...

Page 19: ... connect a PC to the flowmeter follow this procedure Unscrew the front cover using the special wrench standard part of delivery Plug the one end of the RS cable onto the serial connector in the flowmeter Connect the opposite end to the serial port in the PC Use the application software Flow910 to enter new calibration data or to change settings of the flowmeter Disconnect RS232 cable and replace t...

Page 20: ...lectable in Setup menu After pushing UP key Positive Volume is displayed 5 1 2 Positive Volume Total volumetric flow in a forward direction After pushing UP key Negative Volume is displayed 5 1 3 Negative Volume Total volumetric flow in the reverse direction After pushing UP key Auxiliary Volume is displayed 5 1 4 Auxiliary Volume Second Total Volume counter Can be cleared by pushing RIGHT key It ...

Page 21: ...following structure items are changed by pushing UP key and selected by pushing ENTER key Setup Menu structure 5 2 1 Input and outputs configuration 1 INPUT OUTPUT For the flowmeter outputs and input configuration After pushing UP key next item 2 FLOWMETER is selected After pushing ENTER key following submenu is displayed 5 2 1 1 Current loop output 1 1 CURRENT Current loop 4 to 20 mA can be set a...

Page 22: ...00 abs Flowrate QF Hz is generated for both flowrate directions e On Pos output is off in case of negative flow and made in case of positive flow f On Neg output is off in case of positive flow and made in case of negative flow g On In output is on when flowrate is higher than PF1 and lower than PF2 otherwise it is off h On Out output is off when flowrate is higher than PF1 and lower than PF2 othe...

Page 23: ...ow 1 impulse is generated when total volume QP of liquid has flowed in a positive direction c Neg Flow 1 impulse is generated when total volume QP of liquid has flowed in a negative direction d Abs Flow 1 impulse is generated when total volume QP of liquid has flowed in a negative or positive direction e On Pos output is off in case of negative flow and made in case of positive flow f On Neg outpu...

Page 24: ...Key ESC discards changes Note Pulse width can be set with 10 ms resolution values 10 20 30 Following values are pre set Pulse width standard factory setting Pulse width 100 milliseconds 5 2 1 5 Status output 1 5 OUTPUT S Status output is formed by relays Maximum switched voltage is 100 V Maximum switched current should not exceed 500 mA First output is on terminal 8 second output is on terminals 5...

Page 25: ...F1 limit corresponds to the required nominal flowrate QN PF2 limit corresponds to the required nominal flowrate QN H hysteresis corresponds to the required nominal flowrate QN 10 Parameters PF1 PF2 and H are common for frequency impulse and status mode 5 2 1 6 PLC digital input 1 6 INPUT Digital input is activated with DC voltage between 5 and 30 V positive or negative Digital input is between ter...

Page 26: ...valid value to the new value press the ENTER key ESC key discards changes Following values are pre set High flowrate limit standard factory setting PF2 limit corresponds to the required nominal flowrate QN 5 2 1 9 Hysteresis of flowrate limits 1 9 HYSTERESIS Function enables you to set hysteresis of limit values for some functions of digital outputs after pressing key ENTER See Frequency output Im...

Page 27: ... key any item from the list l s m3 h G m and user can be set To change the current valid unit to the selected unit press the ENTER key ESC key discards changes Available units l s litres per second m3 h cubic metres per hour G m US gallons per minute user user defined unit factory set is l h litres per hour user defined unit can be changed by computer only Following values are pre set Flowrate uni...

Page 28: ...d resolution to the selected resolution press the ENTER key ESC key discards changes Available resolution 0 without decimal digits 0 0 max 1 decimal digit 0 00 max 2 decimal digits 0 000 max 3 decimal digits 0 0000 max 4 decimal digits Note selected resolution is the maximuml resolution It is reduced for high values For example 4 decimal digits resolution is valid up to 999 9999 or 9999 9999 displ...

Page 29: ...Function enables you to correct time of internal Real time clock after pressing ENTER key With Up and Right key any time between 00 00 00 and 23 59 59 can be set To change the current valid value to the new value press the ENTER key ESC key discards changes Following values are pre set Time setting standard factory setting Time set Central European Time 5 2 2 9 Date setting 2 9 DATE SET Function e...

Page 30: ...SELFTEST Function enables you to switch an internal self test flowrate simulator On or Off after pressing ENTER key With Up key any item from the list On and Off can be set To change the current valid self test state press the ENTER key ESC discards changes Note Self test Off state is normal working state of flowmeter After switching self test to On state internal flowrate simulator is inserted in...

Page 31: ...ant doesn t have a unit In the calibration process you change this calibration constant to reach similarity between standard flowmeter and the calibrated flowmeter Calibration constants must be different In the case of two equal calibration constants the measured values could be wrong 5 2 4 1 Number of Calibration Points 4 1 NR OF CALP Function enables you to enter a new number of calibration poin...

Page 32: ...ion value of Calibration point 3 after pressing the ENTER key With the Up and Right key any value in the range of real flowrates can be set To change the current valid nominal value to the new nominal value press the ENTER key After entering the nominal value a new calibration constant can be set ESC key discards changes Following values are pre set Calibration point 3 standard factory setting Not...

Page 33: ...Electromagnetic flowmeter M910 Operation manual 33 Following values are pre set Calibration Password standard factory setting PASSWORD CA 10000 ...

Page 34: ...er consists of a flow of periodically alternating commands type command response or query response Command is always a text followed by parameter and ended by control sign cr Response is always ended with control sign cr Commands described in this chapter can be issued through both buses RS485 and RS232 The only difference is that before all commands for RS485 bus is identification in form 00 Wher...

Page 35: ...Flow 2 Neg Flow 3 Abs Flow 4 Fixed M910 confirms execution with string Ok cr Example Command SIM1 cr sets mode Positive flowrate for current output If query SIM cr is sent flowmeter returns response in format 1 cr Frequency output mode setting SFM CPD 0 1 2 3 4 5 6 7 8 9 10 11 12 Following modes can be set 0 Off 1 Pos Flow 2 Neg Flow 3 Bip Flow 4 On Pos 5 On Neg 6 On In 7 On Out 8 Dose On 9 Dose O...

Page 36: ...pulse output If query SPM cr is sent flowmeter returns response in format 1 cr Status output mode setting SSM CPD 0 1 2 3 4 5 6 7 8 Following modes can be set 0 Off 1 On Pos 2 On Neg 3 On In 4 On Out 5 Dose On 6 Dose Off 7 On F1 8 On F1 M910 confirms execution with string Ok cr Example Command SSM1 cr sets mode On for positive flowrate for status output If query SSM cr is sent flowmeter returns re...

Page 37: ...910 confirms execution with string Ok cr In case of query M910 returns set value in actual units Example Command SFO10 5 cr sets value QF to 10 5 After query SFO cr flowmeter returns string 10 500000 cr Impulse output constant QP SPO DNPD Command sets constant QP which represents volume for 1 impulse DNPD It represents volume for 1 impulse in actual units M910 confirms execution with string Ok cr ...

Page 38: ...tput to 10 mA it must be set to Fixed current mode After query SFC cr flowmeter returns string 10 000000 cr Fixed frequency SFF DNPD Command sets fixed for frequency in range between 10 Hz and 12 kHz Frequency output must be set to Fixed mode DNPD It represents frequency for Frequency output in Hz M910 confirms execution with string Ok cr In case of query M910 returns set value in Hz Example Comma...

Page 39: ...y M910 returns set value in actual unit Example Command SHY1 05 cr sets hysteresis to 1 05 After query SHY cr flowmeter returns string 1 050000 cr Flowrate unit FFS CPD 0 1 2 3 Following units can be set 0 l s 1 m3 h 2 G m 3 user M910 confirms execution with string Ok cr Example Command FFS0 cr sets flowrate unit l s If query FFS cr is sent flowmeter returns response in format 0 cr Volume unit FVS...

Page 40: ...ormat 3 cr Flowrate user unit FFU CPD Command sets text for flowrate user unit CPD It represents user units expressed as 5 ASCII characters M910 confirms execution with string Ok cr In case of query M910 returns set user unit Example Command FFU l m cr sets flowrate user unit l m After query FFU cr flowmeter returns string l m cr Volume user unit FVU CPD Command sets text for volume user unit CPD ...

Page 41: ...0 returns set constant Example Command FVC0 001 cr sets constant 0 001 After query FVC cr flowmeter returns 0 001000 Flowrate direction FFD CPD 0 1 Following directions can be set 0 Positive 1 Negative M910 confirms direction with string Ok cr Example Command FFD0 cr sets Positive direction If query FFD cr is sent flowmeter returns response in format 0 cr Low flow cutoff FLF DNPD Command sets flow...

Page 42: ...ery FCE cr is sent flowmeter returns response in format 0 cr Time FTM CPD HH MM SS Command sets new time for internal Real Time Clock CPD It represents new time in format HH MM SS Any value in range between 00 00 00 and 23 59 59 can be set M910 confirms execution with string Ok cr In case of query M910 returns real time Example Command FTM14 25 00 cr sets new time 2 25 00 pm After query FTM cr flo...

Page 43: ...ry RFL cr is sent flowmeter returns response in format 100 000 cr Resolution is designed by Setup menu Volume reading RVO Response contains actual Volume counter value in selected units Example If query RVO cr is sent flowmeter returns response in format 100 000 cr Resolution is designed by Setup menu Positive volume reading RVP Response contains actual Positive volume counter value Example If que...

Page 44: ... time date of this flowrate Example If query RMN cr is sent flowmeter returns response in format 0 000 10 06 11 04 2002 cr minimum flowrate value indicated since last reset command CLRMM Nominal diameter reading RDN Response contains actual flowmeters Nominal diameter DN Example If query RDN cr is sent flowmeter returns response in format 50 cr for nominal diameter 50mm Nominal flowrate reading RQ...

Page 45: ...If query DST cr is sent flowmeter returns response in format 0 cr Datalogger number of samples DNR Response contains number of flowrate samples stored in datalogger Example If query DNR cr is sent flowmeter returns response in format 252 cr for 252 samples in datalogger Datalogger filling DPC Response contains datalogger filling in percent Example If query DPC cr is sent flowmeter returns response...

Page 46: ... power supply voltage and power supply frequency Example If query ISR cr is sent flowmeter returns response in format 371561 0 50 2546 cr Where 371561 is the serial number of instrument 0 is power supply voltage 0 is 230V 1 is 24V 2 is 115V 50 is power supply frequency 0 is DC 50 is 50Hz 60 is 60Hz 2546 is information for service only Write to EEPROM WEP Command writes all new data in internal EEP...

Page 47: ...is message can be disabled in Setup menu 20 Wrong password Wrong password for setup calibration service menu was used Use correct password 21 Not a number Non numerical value Write the appropriate number 22 Value too low Entry value is to low Write the appropriate number 23 Value too high Entry value is to high Write the appropriate number 24 Wrong format Bad date or time format Write regular date...

Page 48: ...r A very dirty liner could cause inaccuracy of the measurement Check mechanical state of the liner 8 3 What to do in case of failure If an obvious failure occurs during the operation e g the display is not lit the flowmeter must be switched off immediately First check the fuse located under the electronic board cover Turn off the power to the flowmeter Remove the cover from the transmitter The fus...

Page 49: ...nit compact version The pictures below show dimensions of the electronic unit for the compact version Dimensions are in millimetres Weight 3 kg 9 1 2 Sensor In the table below are the dimensions of the sensor for compact version In case of remote version add 120 millimetres to dimension A for cable gland and cable Flanges in DIN version meet standard DIN 2508 Flanges in ANSI version meet requireme...

Page 50: ...0 445 485 500 56 350 10 505 535 500 70 400 10 565 580 500 95 500 10 670 695 500 120 600 10 780 800 600 160 700 10 895 900 700 230 800 10 1015 1010 800 330 Table 1 M910 dimensions and weights DIN flanges 9 2 Used materials Electromagnetic flowmeter is made from materials which meet international standards and conventions Liner Hard rubber as standard Teflon PTFE Electrodes CrNi stainless steel 1 45...

Page 51: ... 2 41 5 1 2 6 0 35 0 59 7 119 5 149 3 80 0 5 2 5 14 0 25 1 50 3 62 8 1 8 9 0 50 0 90 5 181 0 226 2 100 0 8 3 9 20 0 39 3 78 5 98 2 3 14 80 141 283 353 125 1 6 30 0 61 123 153 4 22 150 221 442 552 150 2 9 50 0 88 177 221 6 32 200 318 636 795 200 3 16 100 157 314 393 11 57 300 565 1131 1414 250 5 25 150 245 491 614 18 88 500 884 1767 2209 300 7 35 200 353 707 884 25 127 800 1272 2545 3181 350 10 48 ...

Page 52: ...rmation is on the plate Type Manufacturer DN nominal diameter 10 800 mm PN nominal pressure 6 25 x100kPa Serial number Power supply version Protection Flowrate range Flow direction Production Year MAG910 V0000 ARKON FLOW SYSTEMS DN PN 100 16 S n 310541 arkon rtm expolink com Year 2003 Tel Fax 420 545175684 Q 0 80 m3 h IP 67 230 115V 50 60Hz ...

Page 53: ...0kPa Serial number Protection Flowrate range Flow direction Production Year MAG910 V0001 ARKON FLOW SYSTEMS DN PN 100 16 S n 310541 arkon rtm expolink com Year 2003 Tel Fax 420 545175684 Q 0 80 m3 h IP 68 Type Manufacturer Serial number Power supply version Protection Production Year MAG910 V0001 ARKON FLOW SYSTEMS S n 310541 Year 2003 arkon rtm expolink com Tel Fax 420 545175684 IP 65 230 115V 50...

Page 54: ...tion 10 VA Liner hard rubber soft rubber PTFE Electrodes CrNi stainless steel 1 4571 Hastelloy C276 Tantalum Measuring tube Stainless steel 1 4201 dimensions according to DIN 17457 Flange Steel 1 0402 or higher Dimensions according to DIN 2501 BS 4504 or ANSI B16 5 Protection category Compact version IP67 optionally IP68 Remote version sensor IP68 converter IP65 Outputs Frequency 0 to 12 kHz with ...

Page 55: ... diameter DN 10 800 Nominal pressure PN 10 16 25 40 Nominal pressure PN Power Supply Power Supply 12V DC 12D 24V DC 24D 115 230V AC 220A Liner Electrodes Electrodes Stainless Steel SS Titanium TT Platinum PL Hastelloy HA Tantalum TA Liner Hard rubber HR Soft rubber SR PTFE PT Version Version Compact C Remote R Mag 910 Transmitter Only C220A Name of Product Power Supply Power Supply 12V DC 12D 24V ...

Page 56: ...er see table 2 M910 flowrates Abbreviations QI current output constant It represents flowrate for current 20 mA QF frequency output constant It represents flowrate for frequency 1000 Hz QP impulse output constant It represents volume for 1 impulse QD constant for dosing It represents volume for 1 dose PF1 flowrate limit constant It represents low limit flowrate Crossing this limit activates the ap...

Page 57: ...ction or protruding parts Since the magnetic field passes through the entire flow area the signal represents a mean value over the pipe cross section therefore only relatively short straight inlet pipes x DN from the electrode axis are required upstream of the primary head Only the tube liner and the electrodes are in contact with the fluid Already the original signal produced is an electrical vol...

Page 58: ...password is fixed and can be used for service purpose only it is not described in this manual Setup menu has following submenus 1 INPUT OUTPUT 2 FLOWMETER 3 GENERAL Calibration menu has following submenus 1 INPUT OUTPUT 2 FLOWMETER 3 GENERAL 4 CALIBRATION Service menu has following submenus 1 INPUT OUTPUT 2 FLOWMETER 3 GENERAL 4 CALIBRATION 5 SERVICE not described in this manual Menu structure pas...

Page 59: ...1 Dose Off Dose On On Out On In On Negative On Positive Absolute Flowrate Volume for 1 pulse Negative Flowrate Volume for 1 pulse Positive Flowrate Volume for 1 pulse 1 3 Pulse output Off Fixed Frequency Frequency 0 01 12 kHz On F2 On F2 Dose Off Dose On On Out On In On Negative On Positive Absolute Flowrate Flowrate for 1 kHz Negative Flowrate Flowrate for 1 kHz Positive Flowrate Flowrate for 1 k...

Page 60: ...0 2 4 Volume resolution 0 0000 m3 cubic meter l liter US G US gallon 2 3 Volume units user user defined units 0 0 0 0 00 0 000 2 2 Flowrate resolution 0 0000 l s liters per second m3 h cubic meters per hour G m US gallons per minute Key UP 2 FLOWMETER 2 1 Flowrate units User user defined units Key ENTER Key ESC GENERAL submenu structure 3 7 Password menu Password changing On 3 6 Current loop test ...

Page 61: ...value of calibration point 2 flowrate Calibration constant for calibration point 2 4 2 Cal Point 1 Nominal value of calibration point 1 flowrate Calibration constant for calibration point 1 Key UP 4 CALIBRATION 4 1 Number of Cal Points Number of Calibration points 2 4 Key ENTER Key ESC Arkon Flow Systems tel 420 545 175 834 fax 420 545 175 684 e mail arkon rtm expolink com web www arkon co uk www ...

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