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Mag910 & Mag910E User Guide, ENG, 15-3-2011

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1. User Guide 2 m 1 L3 flow systems Arkon Flow Systems x Pfizova 1 3 602 00 Brno Czech Republic Tel 420 543 214 822 Tel Fax 420 543 215 249 Enquiries Orders General questions office arkon co uk Marketing support Brochures marketing arkon co uk Technical support support arkon co uk www arkon co uk List of Contents 1 DitrOd Uc ODE uoce b pergo neret EA NE N EE N nar 4 1 1 Measuritig principle itte neret aee e e Re ee o RE UR P Roe eR ecd 4 1 2 Basic teatre Sn meee pt teet beet eet eet etate e tete rt 5 2 Preparmg for start UD ede deed Re Pa eret re oe dee ee ge EUR Eri VE RUHK OPER Dee Se eus 6 2 1 Inspecting the contents of the package esse se se se ee ee ee ee ee enne ener emeret nennen nnne 6 2 2 Puse replacement Ree een en S 6 2 3 POWEL SUP V zio ree aoi ee Ee Pe I DE EE Ee BO ieu x ee GE AE nee ER De E ETIN EER 7 2 4 Power supply voltage selection Mag910E 115 230V version only eene Jd 3 Installation Pace TE 8 3 Lo Sensor 10C U00 idu eb Ree RE EE ee KIE bdo EK ES 8 5 2 Electrical Connection z eoe o tere e ceterae ee eee ee te ta lads dual lari la an eerte teen 11 Eumenes 11 3 2 2 Electric connection between converter and sensor Remote version eene 11 3 9 9ensot SFOUNdINS EE e ES e Er e E Ee ER SAU ORIS A RENTUR NET RERO ER EN tego 13 34 Lurning the display panel e sette ttr rere e ge PEL PR ee E eru RE Pe EE Ge Re N EE 13 4
2. Mode e with non zero hysteresis OFF ON v i lt PF1 PF1 H PF2 H PF2 OFF Mode h with non zero hysteresis ON i PF1 PF1 H Mag910 amp Mag910E User Guide 24 V1 2 29 04 2011 OFF Mode i with non zero hysteresis ON 4 PFi PF1 H Following values are pre set Status output standard factory setting Mode Off PF1 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 Qy 10 Parameters PF1 PF2 and H are common for frequency impulse and status mode 5 2 1 6 PLC digital input 1 6 INPUT Mag910 only Digital input is activated with DC voltage between 5 and 30 V positive or negative Digital input is between terminals 9 and 10 Digital input can be programmed in one of the following modes a Off input is not active b Dose input activation starts dose QD measuring Dosing indication can be performed by one of outputs frequency impulse or status c Clr Vol input activation clears the Auxiliary volume QD value represents volume for dosing QD value can be changed after selecting mode b Following values are pre set Digital input standard factory setting QD volume 1000 I Mode Off 5 2 1 7 Low flowrate limit 1 7 LIMIT PF1 Function enables you to set low flowrate limit for some functions of digital outputs after pressing
3. 4 ICI Pk Position of electrodes The axis of measuring electrodes must be approximately horizontal see picture YES Vibration To avoid mechanical damage protect 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 C If necessary a sunshade has to be mounted over the electronic unit or a remote version with a separate electronic unit should be used Mag910 amp Mag910E User Guide 10 V1 2 29 04 2011 3 2 Electrical connection Only a competent person may connect the flowmeter to the mains power supply The flowmeter can be connected to the power supply with either a fixed power cable or with a flying lead cable and plug Cable entries on the electronic unit can be used for flexible electrical cables Cables with a diameter between 8 and 10 mm must be used to keep protection IP67 It is not recommended to use rigid metal or plastic conduits If you use a cable and plug it is recommended that the cable has a cross section of 3 x 1 5mm and with a minimum length of 1 m In the case of a fixed connection an independent power switch or circuit breaker should be located close to the f
4. Electronic nit descrip Olei es see ee be dnos ek pi aes Se ree EX PE Tor si E C ees PEDE EU E ee 14 4 1 Front panel display eee te ee Mee ee bee t ge GE ee see d ete Pe aee 14 Ai Rear panel imnputs outpU ts re RR eth pe ee dee Reo teris 15 4 3 S1enabterminals 2 44 EE EG Ee RE GE De GR i ee etae 16 4 3 T Current loop Output vm LE EL Ee ve Bg Ke gee rere Ee Ve Ge OE Ur E EES eg ge eb deus 16 4 3 2 Frequency DLE RE EE EE EE RE EE 17 4 3 3 Impulse outp t ene SCR Ge ee een 17 4 34 Status output Mag910 only erint Rente eee R R rege ter veta koe ep eee Ee ee Pen ERR eue 18 4 3 5 PLC digital input Mag910 only see se Ge GR eene enne nre en rennen trennen nenne 18 4 3 6 Serial port RS485 Mag910 only se se ee ee ee ee Ge ener nennen trennen tenente nnne 18 4 4 Serial port RYE rede ERR cte p EE 19 E COOP io meno M S 20 Del ES PS 20 5 LT Current Elowrate Total Volume iie ete he bar ER HE EREMO e e ete aet goo 20 2 12 Positive Volume ed ER RE BE edt 20 2 13 Negattye VOLUME EE ete rate e eer Ee Ee ee fpe eeu beo r 20 2 1 4 Auxiliary Volume ate tete terc Eoo ie D R taies 20 5 1 5 Maximum Flowrate Maximum Flowrate Time Mag910 only eere 20 5 1 6 Maximum Flowrate Mag910E only sesse se esse es see ee ee Ge Ge GR nnne nennen nennen 20 5 1 7 Minimum Flowrate Minimum Flowrate Time Mag910 only iese see se se eere 20 5 1 8 Minimum Flowrate Mag910E
5. Remove the cover from the transmitter e The fuse holder is located behind the power supply terminals Remove the fuse Replace it with a new fuse of the same rating if necessary e Replace the cover e Connect power supply again If an obvious fault is evident e g a measurement range or an operating mode is not functional the user cannot correct the fault Contact Arkon Hidden faults can cause different symptoms Usually they cause instability of some parameters Hidden defects can be caused by unacceptable distortion degraded insulation etc In this case contact Arkon The flowmeter can have hidden defects when correct operation rules are not applied In this case the fault can be caused by wrong installation Most frequent cases of false hidden defects e mains voltage out of tolerance limits or unstable e poor grounding of the measuring circuit bad connection of the ground terminal e large electrostatic or electromagnetic field Mag910 amp Mag910E User Guide 37 V1 2 29 04 2011 8 Application information 8 1 Weight and dimensions Flowmeter weight and dimensions depend mostly on the version remote or compact and diameter of the pipe 8 1 1 Electronic unit compact version The pictures below show dimensions of the electronic unit for the compact version Dimensions are in millimetres i 176 230 181 Weight 3 8 kg 8 1 2 Electronic unit remote version 230 60 The picture
6. 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 4 standard factory setting Not used 5 2 4 6 Calibration Password 4 6 PASSWORD CA Function enables you to enter a new password for calibration menu access after pressing the ENTER key With the UP and RIGHT keys any password in the range between 00000 and 99999 can be set To change the current valid password to the new password press the ENTER key ESC key discards changes Following values are pre set Calibration Password standard factory setting PASSWORD CA 10000 5 2 4 7 Service configuration 5 SERVICE For the flowmeter service configuration Available only for authorized service department if the correct service password has been entered Mag910 amp Mag910E User Guide 31 V1 2 29 04 2011 5 2 4 8 Mag910 Menu structure Mag910 only There are three types of menu for parameters setting Setup menu Calibration menu Service menu Access to these menus is enabled after pushing the key ENTER from the Main menu Each menu has its own password and you can enter this menu using an appropriate password only Setup password you can change in setup menu calibration password you can change in calibration menu Service password is fixed and can be used for service pur
7. depending on nominal size Flow range 0 1 to 10 m s 0 01 to 5000 Vs 0 03 to 18000 m3 h Accuracy e 0 596 0 5 to 10 m s of reading value e 1 0 1 to 0 5 m s of reading value Maximum media temperature 70 C 158 F for rubber liner 130 C 266 F for PTFE liner in remote version Minimum electrical conductivity 25uS cm Ambient temperature 20 to 60 C 4 to 140 F Power supply e 115 230V 10 15 50 60Hz auto selectable Mag910 VxxOx 115 230V 10 15 50 60Hz manual selectable Mag910E VxxOx e 12V DC 20 10 12V 50 60Hz 41096 10 Mag910 Vxx1x Mag910E Vxx1x e 24V DC 20 10 24V 50 60Hz 41096 10 Mag910 Vxx2x Mag910E Vxx2x e 48V DC 20 10 48V 50 60Hz 10 10 Mag910 Vxx3x Mag910E Vxx3x Power consumption 0 VA Mag910 9 VA Mag910E 1 Liner e hard rubber e soft rubber e PTFE Electrodes e CrNi stainless steel 1 4571 e Hastelloy C276 e Tantalum Measuring tube Stainless steel 1 4201 dimensions according to DIN 17457 Flange Steel 1 0402 or higher Dimensions according to EN1092 DIN2501 BS 4504 ANSI B16 5 Sanitary DIN11851 or Tri Clamp flangeless wafer style Protection category e Compact version IP67 e Remote version sensor IP68 converter IP65 optionally IP67 Outputs e Frequency 0 to 12 kHz with programmable flowrate and function e Pulse 0 to 50 Hz with programmable volu
8. messages When any error occurs the flowmeter will display an error message Errors can arise because of e Incorrect control i e faulty connection to the flowmeter grounding etc e Flowmeter failure Error 45 Excitation Err In case of any error the error message is displayed on the display for approx 1 second After switching on an internal test of the hardware is performed If there were any errors during the test the flowmeter would display the appropriate error message Types of errors and methods of troubleshooting if available are in following table Troubleshooting O0 Current output Current loop is Connect the current output or switch the current output 1 disconnected OFF if it is not used This message can be disabled in Setup menu 2 Wrong password Wrong password for Use correct password 0 Mag910 only setup calibration service menu was used 1 Mag910 only 2 Mag910 onl 3 Mag910 only 2 Write regular date or time format 4 Mag910 onl format 2 Datalogger No records in Datalogger is switched OFF or records have been empty datalogger cleared Mag910 onl 2 Wrong Cal Point There are 2 or more Correct calibration constant values or reduce number Mag910 only calibration constants of calibration points with the same nominal value Err Baud rate 1200 Bd 5 EER T department 4 No liquid in pipe Fill the pipe with liquid 6 Mag910 amp Mag910E Us
9. only esse es se es ee ee Ge Ge GR GR ee Ge Re ee ee ee ee ee 20 5 1 9 Datalogger Mag910 only 3 ether ee tt EE EE ER Ee 21 SEP Tenue o E us eic aede eR EROS 21 5 2 1 Input and outputs configuration 1 INPUT OUTPUT sesse se se se nnne nennen 21 5 2 1 1 Current loop output 1 1 CURRENT esse sees sees see se ee nennen enr RA enne 21 5 2 1 2 Frequency output 1 2 OUTPUT E iicet er pt eet este Ed deep ee E ien ese be nege bree ese 22 5 2 1 3 Impuls output 1 3 0U TBU T D s k Ll SVS k va ee cR ate etes be RC tte 23 2 2 1 4 Pulse width 1 4 PULSE WIDTH aeeie iei i E eet eet ette ete ba a 24 5 2 1 5 Status output 1 5 OUTPUT S Mag 910 only ese ee GR AA ee nenten 24 5 2 1 6 PLC digital input 1 6 INPUT Mag910 only cece esses 25 5 2 1 7 Low flowrate limit 1 7 LIMIT PF 1 122210 ltr ree Talvan ab ee AR GR Ge nennen nenne 25 5 2 1 8 High flowrate limit 1 8 LIMIT PE2 ees ee sees sees ese see ee ee ee ee ee ee ee ee Ge kast GR GR RA ee ee 25 5 2 1 9 Hysteresis of flowrate limits 1 9 HYSTERESIS eese 26 5 2 1 10 RS485 baud rate 1 A RS485 B R Mag910 only ee ee ee ee ee Ge ener 26 Mag910 amp Mag910E User Guide 1 V1 2 29 04 2011 5 2 1 11 RS485 address 1 B RS485 ADDR Mag910 only eene 26 5 2 2 Flowmeter configuration 2 FLOWMETER sees se esse ee se se ee se ee ee ee ee se de se ee ee ee ee ge de ed ee ee e
10. resolution 0 000 0 0000 lis liters per second gt 2 1 m3 h cubic meters per hour x Flowrate units G m US gallons per minute User user defined units Key ENTER 2 D OJSJXSNJN 111 Key ESC GENERAL submenu structure 3 7 Password changing Password menu 3 6 On Current loop test Off 4 3 5 On Self test Off 3 4 Information only Power supply voltage and frequency iu Power supply o 3 3 Flowmeter serial number ie Serial number 3 2 Flowrate for Qn Nominal range x 3 1 Diameter in mm Diameter Key ENTER SOOO Key ESC Mag910 amp Mag910E User Guide 34 V1 2 29 04 2011 Key UP p CALIBRATION submenu structure 4 CALIBRATION 4 6 Calibration password Calibration Password changing 4 5 Nominal value of calibration Calibration constant for Cal Point 4 point 4 flowrate calibration point 4 4 4 Nominal value of calibration Calibration constant for Cal Point 3 point 3 flowrate calibration point 3 4 3 Nominal value of calibration Calibration constant for Cal Point 2 point 2 flowrate calibration point 2 4 2 Nominal value of calibration Calibration constant for Cal Point 1 point 1 flowrate calibration point 1 4 1 Number of Calibration 2 4 Number of Cal Points points Key ENTER ES H rrr Mag910 amp Mag910E User Guide 35 Key ESC V1 2 29 04 2011 6 Error
11. supplier Mag910 amp Mag910E User Guide 45 V1 2 29 04 2011 13 Terminology Special symbols and terms Flowrates Qi minimum applicable flowrate the least flowrate which has guaranteed measuring accuracy depends on diameter see table 2 Mag910 flowrates Qs recommended minimum flowrate least flowrate which has the best measuring accuracy depends on diameter see table 2 Mag910 flowrates Qn recommended nominal flowrate nominal flowrate in which is flowmeter usually calibrated depends on diameter see table 2 Mag910 flowrates You can predetermine this nominal flowrate in your order Qso4 recommended maximum flowrate maximum flowrate which is usually used in industrial applications depends on diameter see table 2 Mag910 flowrates Q100 maximum applicable flowrate flowrate limit which has guaranteed measuring accuracy depends on diameter see table 2 Mag910 flowrates Quax maximum applicable overload Q4254 maximum flowrate which can be still measured depends on diameter see table 2 Mag910 flowrates Abbreviations Ql 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 Crossi
12. 00 353 70 7 88 4 Los 17 90 166 33 2 415 12 60 350 59 7 1195 14953 os 25 140 251 50 3 62 8 18 9 0 50 0 90 5 181 0 2262 os 39 20 0 39 3 735 98 2 3 14 60 141 283 e soo 61 123 153 4 22 150 221 442 552 2 soo 88 177 221 e 32 200 318 636 795 3 16 100 157 314 393 11 57 300 ses 1131 1414 10 48 300 481 962 1202 35 173 1000 1732 3464 4330 13 63 400 628 1257 1571 45 226 1300 2262 4524 5655 20 98 600 982 1963 2454 71 353 2000 3534 7069 8636 38 192 1000 1924 3848 4811 139 693 4000 6927 13854 17316 Qi minimum applicable flowrate minimum flowrate with guaranteed accuracy Q5 recommended minimum flowrate minimum flowrate with best accuracy Qu recommended nominal flowrate expected working flowrate Qso4 recommended maximum flowrate maximum flowrate for industrial use Qio maximum applicable flowrate maximum flowrate with guaranteed accuracy Qmax maximum applicable overload Q125 flowmeter is still measuring Table 2 Mag910 Mag910E flowrates A sensor diameter should be chosen to keep real flowrate between Os and sos because in this range the flowmeter has the best accuracy Mag910 amp Mag910E User Guide 40 V1 2 29 04 2011 9 Type plate Compact version The type plate is
13. 000 Return to the Main menu is possible after pushing the Enter Fazzward riae I Setur Menu 1 IHPLIT OLITPLIT ESC key Setup menu has the 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 as passive type between outputs 1 2 1 positive 2 negative or as active type between outputs 2 3 2 positive 3 negative In both cases outputs are galvanically separated from all other electronic circuits of the flowmeter Voltage drop on the passive current loop is 4 V Active current loop can work to a maximum of 800 O Current loop output can be programmed in one of the following modes a Off current output is adjusted to 4mA error message 01 Current output is switched off b Pos Flow current 4 16 Flowrate QI mA is generated for a positive flowrate direction For a negative flowrate direction 4mA is generated c Neg Flow current 4 16 Flowrate QI mA is generated for a positive flowrate direction For a positive flowrate direction 4 mA is generated d Abs Flow current 4 16 abs Flowrate QI mA is generated for both flowrate directions e B
14. 99 displayed value For higher values the resolution reduced 999 999 Following values are pre set Flowrate resolution standard factory setting Resolution 0 0000 for Q 1090 lt 3 0000 0 000 for 3 000 lt Qoo lt 30 000 0 00 for 30 00 lt Q 100 lt 300 00 0 0 for 300 0 lt Q 100 lt 3000 0 0 for Q 100 2 3000 0 5 2 2 3 Volume units 2 3 VOLUME UNIT Function enables to set volume units after pressing the ENTER key With the UP key any item from the list m3 P US G 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 m3 cubic metres litres US G US gallons user user defined unit factory set is l litres user defined unit can be changed by computer only Following values are pre set Volume units standard factory setting Volume units m3 User 5 2 2 4 Volume resolution 2 4 VOL RESOL Function enables to set volume resolution after pressing the ENTER key With the UP key any item from the list 0 0 0 0 00 0 000 and 0 0000 can be set To change the current valid 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 r
15. ENTER key See Frequency output Impulse output and Status output With the UP and RIGHT keys any value between Qwax flowrate can be set Limit PF1 is displayed in the same format as the flowrate To change the current valid value to the new value press the ENTER key ESC key discards changes Following values are pre set Low flowrate limit standard factory setting PF1 limit corresponds to the required nominal flowrate Qn 5 2 1 8 High flowrate limit 1 8 LIMIT PF2 Function enables you to set high flowrate limit for some functions of digital outputs after pressing key ENTER See Frequency output Impulse output and Status output With the UP and RIGHT keys any value between Qwax flowrate can be set Limit PF2 is displayed in the same format as the flowrate To change the current 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 Qy Mag910 amp Mag910E User Guide 25 V1 2 29 04 2011 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 Impulse output and Status output With the UP and RIGHT keys any value between Qyax flowrate can be set Hystere
16. INT 2 Function enables you to change the nominal and calibration value of Calibration point 2 after pressing the ENTER key With 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 new calibration constant can be set ESC key discards changes Following values are pre set Calibration point 2 standard factory setting Nominal point 40 70 of required Qn Cal Constant is assigned according to the calibration 5 2 4 4 Calibration point 3 4 4 CAL POINT 3 Function is available only if 3 or 4 calibration points are selected Function enables you to change the nominal and calibration 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 used 5 2 4 5 Calibration point 4 4 5 CAL POINT 4 Function is available only if 4 calibration points are selected Function enables you to change the nominal and calibration value of Calibration point 4 after pressing the ENTER key With the UP and RIGHT keys any value in the range of real flowrates can
17. 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 4800 and 19200 Bd For cables over 100m or if there is a noisy power supply voltage especially peaks generated usually by motors etc select communication speed below 9600 Bd Note Serial port RS485 is galvanically isolated from other electronic circuits Mag910 amp Mag910E User Guide 18 V1 2 29 04 2011 4 4 Serial port RS232 The connector is located on the front panel and is accessible after removing the electronic unit cover RS232 enables you to connect the flowmeter to a personal computer RS232 interface is used for flowmeter configuration and calibration It s not suitable for online communication during operation because the flowmeter must be open and IP67 protection is not valid For such communication use RS485 interface RS 232 parameters are fixed Baud rate 1200 Bd Data bits 8 Stop bit 1 Parity none Note Control computer must keep signal RTS in static level between 3 to 12 V and signal DTR in static level 3 to 12V Cable between Flowmeter and PC configuration 1 1 BE PSubi psus2 Fiowmeter DTR 3 12V static level Power supply RS232 RTS 3 12V static level Power supply RS232 For connection of the flowme
18. andard factory setting L F Cutoff corresponds to the flowrate Q 4 2 see table 2 M910 Flowrates 5 2 2 7 Moving average time constant 2 7 TIMECONST Function enables you to change the time for moving average calculating after pressing ENTER key With UP and RIGHT key any value between 1 second and 20 seconds 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 constant standard factory setting Timeconst 10 seconds 5 2 2 8 Time setting 2 8 TIME SET Mag910 only 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 Mag910 only Function enables you to correct date of internal Real time clock after pressing key ENTER key With UP and RIGHT key any date between 01 01 2000 and 31 12 2099 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 Date setting standard factory setting Date set Actual date 5 2 2 10Datalogger setting 2 A DATALOGGER Mag910 only Function enables you to set sample
19. assword in range between 00000 and 99999 can be set To change the current valid password to the new password press the ENTER key ESC key discards changes Following values are pre set Basic Menu Password standard factory setting PASSWORD MN 00000 5 2 4 Calibration menu 4 CALIBRATION Setting any new value in calibration menu changes calibration data Calibration should be performed in an appropriate equipped laboratory We recommended using software Flow910 for easy Calibration It contains Calibration wizard and can prevent flowmeter from incorrect calibration Calibration menu is accessible as part 4 of the Setup menu if the correct calibration password has been entered After entering the Basic menu password only parts 1 to 3 of Setup menu are accessible Without the correct password access to the Calibration menu is refused Default factory set Calibration password is 10000 Note Flowmeter Mag910 enables calibration at 2 3 or 4 points Each calibration point contains 2 values Nominal value of calibration point is selected by user in range between Qmax for maximum flowrates see table 1 M910 flowrates It is expressed in flowrate units To this nominal value is attached a calibration constant Calibration constant doesn t have a unit In the calibration process you change this calibration constant to reach similarity between standard flowmeter and the calibrated flowmeter Higher calibration constant means low
20. ated behind the back cover Remove the fuse Replace it with new fuse with the same rating e Screw on the back cover e Reconnect the power supply Fuse holder Note e T315mA fuse is used for 115 230 V version e 1A fuse is used for 24 and 48 V DC AC versions e 2A fuse is used for 12 V DC AC version Mag910 amp Mag910E User Guide 6 V1 2 29 04 2011 2 3 Power supply From a power supply point of view the flowmeter is delivered in four basic versions e 115 230V 10 15 50 60Hz automatic switching for Mag910 manual switching for Mag910E e 12V DC 120 10 12V 50 60Hz 10 10 e 24V DC 120 10 24V 50 60Hz 10 10 e 48V DC 120 10 48V 50 60Hz 10 10 2 4 Power supply voltage selection Mag910E 115 230V version only Mag910E is equipped with a power supply voltage selector which enables the use of both 115VAC and 230VAC supply voltage The selector is located on the PC board see below It is accessible after removing the cover as follows Disconnect the power supply from the flowmeter Unscrew the back cover using the special wrench standard part of delivery The power supply voltage selector is located behind the back cover Move the jumper to the required position Screw on the back cover Reconnect the power supply Power supply voltage selector Note Mag910 is equipped with automatic power supply selector Mag910 amp Mag910E User Guide 7 V1 2 29 04 2011 3 Insta
21. aximum switched current should not exceed 500 mA First output is on terminal 8 second output is on terminals 5 and 7 internally connected Status output can be programmed in one of the following modes a Off output is not active off state b On Pos output is off in case of negative flow and made in case of positive flow c On Neg output is off in case of positive flow and made in case of negative flow d On In output is on when flowrate is higher than PF1 and lower than PF2 otherwise it is off e OnOut output is off when flowrate is higher than PF1 and lower than PF2 otherwise it is on f Dose On output is on when programmed dose is counting otherwise it is off g Dose Off output is off when programmed dose is counting otherwise it is on h OnsF1 output is on when flowrate is higher than PF1 otherwise it is off i On F1 output is on when flowrate is lower than PF1 otherwise it is off If setting of flow limit is chosen hysteresis H can be set too Hysteresis is a tolerance field on one side of flow limits PF1 and PF2 The output status changes indicates crossing over pre set limit when the immediate flowrate crosses over the value PF2 or goes below limit PF1 The output status comes back to the default status when the immediate flowrate decreases under the value PF2 H or increases over limit PF1 H again OFF 4 gt ee Mode d with non zero hysteresis ON PF1 PF1 H PF2 H PF2
22. ction provided by enclosure level IP67 according to EN 60529 IEC 529 The flowmeter should only be used according to the instructions described in this operating manual 14 2 Warranty Within the manufacturers general supply conditions all material and manufacturing faults are covered by that It is up to us whether the warranty obligation includes a repair free of charge or corresponding replacement Place of the warranty obligation is Czech Republic Further claims on compensation especially for loss of production or resultant of damages are strictly excluded Any defects caused by improper use are absolutely not included in the warranty Excluded from warranty are also expendable items 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 For the item or instrument returned after the expired warranty time repair or replacement on warranty can only be accepted if manufacturer has been informed in time that a warranty case has occurred Warranty period for all types of electromagnetic flowmeter is 24 months 14 3 Contact Technical support support arkon co uk Windows life messenger suppor
23. ctivated by using a magnet Activating the sensor less than 3 seconds using a magnet 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 Signal terminals Power supply terminals Cable glands Mag910 amp Mag910E User Guide 15 V1 2 29 04 2011 4 3 Signal terminals Current loop Or Frequency output Impulse output Ja EE Status output Mag910 only PLC input c Mag910 only Tes RS485 interface Mag910 only Power supply 4 3 1 Current loop output The 4 to 20 mA current loop can be set as a passive type between outputs 1 2 1 positive 2 negative or as an active type between outputs 2 3 2 positive 3 negative In both cases 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 Q Example of current output connection LL 9 Passive current output connection Active current output connection For more information about current output see chapter In
24. d White Electrode 2 EL2 2 wire cable Brown Excitation 1 EXCITATION White Excitation 2 EXCITATION Following procedure should be observed to connect sensor cable to the transmitter or sensor Mag910 amp Mag910E User Guide 11 V1 2 29 04 2011 e Switch off power supply e Dismount top cover of connection box Four screws must be removed e Connect 5 wires to the connector e As the basic protection of connection box is IP65 it is important in case you need better protection to fill the box with connected wires with reenterable insulating and sealing compound One piece of compound is standard part of delivery Using this technology will be protection of transmitter IP67 and protection of sensor IP68 e Mount the cover back e Switch on power supply Mag910 amp Mag910E User Guide 12 V1 2 29 04 2011 3 3 Sensor grounding To ensure the correct operation of the flowmeter an earthing connection between the sensor and pipeline must be made The sensor is equipped with screw connection for an earthing wire This screw has to be connected to the flange on the pipeline Use Copper wire to connect between the flange and the earth screw on the sensor If the pipeline is manufactured from a 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 t
25. de k with non zero hysteresis Mode l with non zero hysteresis Mag910 amp Mag910E User Guide OFF 2 gt m PF2 H PF2 m I PF2 H PF2 PF1 PF1 H OFF on scs PF1 PFi4H 23 V1 2 29 04 2011 QP value represents volume for 1 impulse and can be set independently to the nominal diameter of sensor QP value can be changed after selecting modes b c or d Following values are pre set Impulse output standard factory setting Mode Positive flowrate QP 1000 litres PF1 limit corresponds to the required nominal flowrate Qy PF2 limit corresponds to the required nominal flowrate Qy H hysteresis corresponds to the required nominal flowrate Qy 10 Parameters PF1 PF2 and H are common for frequency impulse and status mode 5 2 1 4 Pulse width 1 4 PULSE WIDTH Function enables to change the pulse width of Impulse Output in milliseconds after pressing key ENTER With keys UP and RIGHT any value between 10 millisecond and 2500 milliseconds can be set To change the currently valid value to the new value press the key ENTER 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 Mag910 only Status output is formed by relays Maximum switched voltage is 100 V M
26. e Negative Flowrate Volume for 1 pulse Positive Flowrate Volume for 1 pulse Off 1 2 Frequency output Fixed Frequency Frequency 0 01 12 kHz On gt F2 On lt 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 kHz Off 1 1 Current output Fixed Current Current 4 20 mA Bipolar Flowrate Flowrate for 20 mA Absolute Flowrate Flowrate for 20 mA Negative Flowrate Flowrate for 20 mA Positive Flowrate Flowrate for 20 mA Off current 4mA Key ENTER 1 Key ESC Mag910 amp Mag910E User Guide 33 V1 2 29 04 2011 FLOWMETER submenu structure 2 A Sampling rate in OFF 5 10 15 30 45 60 120 Datalogger minutes datalogger 180 240 CLR clear 2 9 Real time clock Date setting date setting 2 8 Real time clock Time setting time setting 2 7 Time for flowrate moving 1 20 sec Time constant average 2 6 Flowrate for Low flow Low flow cutoff cutoff 2 5 Positive tr Flowrate direction Negative El 0 Lu 0 0 2 4 0 00 3 Volume resolution 0 000 TE 0 0000 N m3 cubic meter 23 liter Volume units US G US gallon user user defined units 0 22 EE Flowrate
27. e 26 5 2 2 1 Flowrate units 2 1 FLOW UNIT esse sees se sae ese kesen ee ee l asal S Ge ee Ge la a aat h Ja ee H aa Dara k 26 5 2 2 2 Flowrate resolution 2 2 FLOW RESOL ees esse se ee ee se ee ee ee ee ee Vand Vatn a en a kana Kaka Ha 27 5 2 2 3 Volume units 2 3 VOLUME UNIT sees ees se ee se ee EEEE EEan S REE AEEA Ge ee ee Es ee nennen 27 5 2 2 4 Volume resolution 2 4 VOL RESODL ees es se ee ee ee ee ee ee ee ee Re ee ee ee ee ee ee 27 5 2 2 5 Flowrate direction 2 5 FLOW DIREC ees sesse se ee ee se se ee ee ee ee ee ee Ge ee ee ee al ee ERLE ee ee ee ee ee 28 5 2 2 6 Low flow cutoff 2 6 L F CUTOFF aaaaiaaaiaaaaaaiaaaiasasanasanasananaaaiaaaiaaaidaauaaandaaudaauaaalaaandaaaaaaaa 28 5 2 2 7 Moving average time constant 2 7 TIMECONST iese sesse ese ss se es se es ee ee Ge Ge Ge GR ee ee 28 5 2 2 8 Time setting 2 8 TIME SET Mag910 only ee esse ee ee ee ee ee ee se de ee enne ee ee ee 28 5 2 2 9 Date setting 2 9 DATE SET Mag910 only ees se esse ee esse ee ee se ee ee ee ee se ee ee ee ee ge de ee de ee ee ee 28 5 2 2 10 Datalogger setting 2 A DATALOGGER Mag910 only sesse esse eene 28 5 2 3 General settings 3 GENERAT eisers bee Ee nes Ee geer eet cene re gegee de kari eke ee t Pe tla tadi 29 5 2 3 1 Diameter STDIAMETER eet EER ER ee a ee eX Ve Ge ose ee EU Ee Ge ee ee eg ee ee EN ER 29 5 2 3 2 Nominal flowrate range ON 3 2 RANGE ees ss see es se
28. ectable 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 Positive Uolume Negative Volume is displayed E S983 812 m3 e W 2 M Q V S g 3 o Total volumetric flow in the reverse direction After pushing UP key Hesative Ualume Auxiliary Volume is displayed E 226 318 m3 5 1 4 Auxiliary Volume Second Total Volume counter Can be cleared by pushing RIGHT key Auxiliary Yo lume It is usually used for measuring volumetric flow during a set period such EH 5943 942 m3 as day month etc After pushing UP key Maximum Flowrate is displayed 5 1 5 Maximum Flowrate Maximum Flowrate Time Mag910 only Maximum flowrate value indicated since last reset pushing RIGHT Hi EZA dZ mih key Date and time of maximum flowrate is displayed in lower row After BFiis 84 63 2083 pushing UP key Minimum Flowrate is displayed 5 1 6 Maximum Flowrate Mag910E only Maximum flowrate value indicated since last reset longer use of the Hi 626 42 mgr magnet Maximum Flaurate 5 1 7 Minimum Flowrate Minimum Flowrate Time Mag910 only Minimum flowrate value indicated since last reset pushing RIGHT key Lo 26 258 m3 h Date and time of minimum flowrate is displayed in lower row After HA 86 83 2683 pushing UP key Datalogger is displayed 5 1 8 Minimum Flowrate Mag910E only Mi
29. educed for high values For example 4 decimal digits resolution is valid up to 999 9999 or 9999 9999 displayed value For higher values the resolution is reduced 99999 999 Following values are pre set Volume resolution standard factory setting Resolution 0 000 Mag910 amp Mag910E User Guide 27 V1 2 29 04 2011 5 2 2 5 Flowrate direction 2 5 FLOW DIREC Function enables you to switch between Positive and Negative flow direction change the sign in flowrate value after pressing the ENTER key With the UP key any item from the list Positive and Negative can be set To change the current valid direction to the selected direction press the ENTER key ESC key discards changes Note flowmeters are working in both flow directions however they are calibrated for positive direction only Following values are pre set Flowrate direction standard factory setting Flow direc Positive 5 2 2 6 Low flow cutoff 2 6 L F CUTOFF Function enables you to set limit for suppressing low flowrates after pressing ENTER key With the UP key and RIGHT any value between Qyax flowrate can be set Limit is displayed in the same format as the flowrate To change the current valid value to the new value press the ENTER key ESC key discards changes Note All flowrates below this value will be displayed as 0 00 This setting is valid for display and all outputs Following values are pre set Low flow cutoff st
30. ee ee ee RA Ge AA ee Ge Re AR AA Ge ee ee ee 29 5 2 3 3 Serial number 3 3 SERIAL NR esse esse esse ee se ee se ae ee ae ee Re Re Re ee ee ee ee ee ee RA RA entrer innen 29 25 2 34 Power supply S4POWER SUB etre Gee teneret nieto Week Ness haee ede De E gese see ee lg 29 5 2 3 5 Selt test 3 5 SELETEST is iia ert SR bede ree nce deg ne iere Ee ee eder ke EO ee De cde ee 29 5 2 3 6 Current Loop Test 3 6 C LOOP TEST sesse sesse ee se se INELE ee ee enne Ge AA ee ee ee Ge Re de ee ee ee 29 5 2 3 7 Basic Menu Password 3 7 PASSWORD MN ees esse ee es se ee ee Ge ee enne Ge RA ee ee ee ee ee ee 30 5 2 4 Calibration menu 4 CALIBRATION ee ee se ee Ee AR Re ee Re AR ee Re ee Ee ee ee ee ee 30 5 2 4 1 Number of Calibration Points 4 1 NR OF CALP esse se se ee es se ee ee ee Ge ee ee ee ee 30 5 2 4 2 Calibration point 1 4 2 CAL POINT 1 ee se oe ee ee Ge AA ee RA RA RA enne en 30 5 2 4 3 Calibration point 2 4 3 CAL POINT 2 se ae se RA Re Re Ge Ge ee ee AR AR AR AR AA ee 31 5 2 4 4 Calibration point 3 4 4 CAL POINT 3 ese sea ea RA RR Re ee ee ee ee Re RA RA RA RA ee en 31 5 2 4 5 Calibration point 4 4 5 CAL POINT 4 ees se eo ee ee ee ee AR AR RA RA ee Re ee ee 31 5 2 4 6 Calibration Password 4 6 PASSWORD CA sesse esse se ee ee se ee ee ee ee ennt ee Ge ee ee ee ee 31 5 2 4 7 Service configuration 5 SERVICE ees se sees se ee ee ee tess f AO ll t ka Ai ee ee alla Aa t ee ee ee 31 5 2 4 8 Mag910 Menu str
31. ei On gt F1 On lt F1 output is not active off state 1 impulse is generated when total volume QP of liquid has flowed in a positive direction 1 impulse is generated when total volume QP of liquid has flowed in a negative direction 1 impulse is generated when total volume QP of liquid has flowed in a negative or positive direction output is off in case of negative flow and made in case of positive flow output is off in case of positive flow and made in case of negative flow output is on when flowrate is higher than PF1 and lower than PF2 otherwise it is off output is off when flowrate is higher than PF1 and lower than PF2 otherwise it is on output is on when programmed dose is counting otherwise it is off output is off when programmed dose is counting otherwise it is on output is on when flowrate is higher than PF1 otherwise it is off output is on when flowrate is lower than PF1 otherwise it is off If setting of flow limit is chosen hysteresis H can be set too Hysteresis is a tolerance field on one side of flow limits PF1 and PF2 The output status changes indicates crossing over pre set limit when the immediate flowrate crosses over the value PF2 or goes below limit PF1 The output status comes back to the default status when the immediate flowrate decreases under the value PF2 H or increases over limit PF1 H again Mode g with non zero hysteresis Mode h with non zero hysteresis Mo
32. em 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 instead of the pipe Function can be used for signal converter testing Number in range 0 980 1 020 is displayed if signal converter is OK Number is displayed in state On only After switching on you have to wait for converter stabilization up to 20 seconds Following values are pre set Self test standard factory setting Self test Off 5 2 3 6 Current Loop Test 3 6 C LOOP TEST Function enables you to switch an internal test of the connected current loop On or Off after pressing the ENTER key With the UP key any item from the list On and Off can be set To change the current valid Current Loop Test state press the ENTER key ESC key discards changes Note If Current Loop Test is in On state and current output flows less than 3 mA error message 01 Current Output will be displayed Following values are pre set Current Loop Test standard factory setting C Loop Test Off Mag910 amp Mag910E User Guide 29 V1 2 29 04 2011 5 2 3 7 Basic Menu Password 3 7 PASSWORD MN Function enables you to enter a new password for basic menu access after pressing the ENTER key With the Up and Right key any p
33. er Electrodes Sensor tube Flange Mag910 amp Mag910E User Guide Hard rubber Teflon PTFE as standard CrNi stainless steel 1 4571 as standard Hastelloy C276 Tantalum Stainless steel 1 4201 dimensions according to DIN 17457 Steel 1 0402 or higher dimensions according to EN1092 DIN2501 BS 4504 ANSI B16 5 Sanitary DIN11851 or Tri Clamp flangeless wafer style 39 V1 2 29 04 2011 8 3 Flowrate versus diameter The choice of flowrate for an electromagnetic flowmeter depends on the diameter of the sensor The higher pipe diameter the higher flowrate can be measured A determining parameter for flowrates is maximum velocity of the liquid Maximum velocity is the speed where the flow of liquid inside pipe is still laminar In Mag910 it is limited to 10m s with 12596 overload Speed over 10 m s is usually too high for industrial applications Such diameter of pipe is usually selected where expected flowrate is between Qs and soes In the table bellow applicable flowrates for various diameters is displayed in units l s and m hr Flwrte s Flowrtes m3h DN Q Oo MES o Qoos Cu Qin 0 MER o Qoos Quax 0 02 0 09 0 50 0 88 177 221 0 06 0 32 2 00 3 18 6 36 7 95 0 03 0 16 0 90 157 3 14 3 93 0 11 0 57 3 20 ses 11 31 14 14 17 67 10 05 HEESE o1 oe 40 63 126 15 7 o5 23 130 226 452 o2 1 0 60 98 19 6 245 oz 35 2
34. er Guide 36 V1 2 29 04 2011 7T Maintenance The inductive flowmeter is an electronic device with circuits protected with built in electronic fuses These protect the instrument against damage caused by the user 7 1 Advice for correct operation The following principles should be consider during installation e f there is a noisy power supply voltage especially peaks generated usually by motors etc use an external power supply filter between the flowmeter and power supply Protect the flowmeter and the internal lining of the sensor pipe from mechanical damage especially during installation or cleaning Protect the flowmeter from direct sunlight Fit a sunshade if necessary e Do not expose the flowmeter to intense vibration 7 2 Periodical maintenance The flowmeter does not require any special maintenance Dependent on the media being measured it is recommended that approx once a year remove the sensor from the pipe and clean the liner Method of cleaning consists of removing mechanical dirt and any non conductive coating like oil film from the liner A very dirty liner could cause inaccuracy of the measurement Check mechanical state of the liner 7 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 e Turn off the power to the flowmeter e
35. er displayed value 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 points after pressing the ENTER key With the Up and Right keys any number in range between 2 and 4 can be set To change the current valid number to the new number press the ENTER key ESC key discards changes Note Standard number of calibration points is 2 More calibration points are used for special applications when higher accuracy is expected negative flowrate low flowrates etc Following values are pre set Number of Calibration Points standard factory setting NR OF CALP 2 5 2 4 2 Calibration point 1 4 2 CAL POINT 1 Function enables you to change nominal and calibration value of Calibration point 1 after pressing the ENTER key With the UP and RIGHT keys 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 1 standard factory setting Nominal point 5 10 of required Qn Cal Constant is assigned according to the calibration Mag910 amp Mag910E User Guide 30 V1 2 29 04 2011 5 2 4 3 Calibration point 2 4 3 CAL PO
36. esis ON Ws PF2 H PF2 QF value represents flowrate for frequency 1000 Hz and can be set independently to the nominal diameter of the sensor OF value can be changed after selecting modes b c or d Fixed frequency value can be changed after selecting mode m Following values are pre set Frequency output standard factory setting Mag910 amp Mag910E User Guide 22 V1 2 29 04 2011 Mode Positive flowrate QF flowrate corresponds to the required nominal flowrate Qn PF1 limit corresponds to the required nominal flowrate Qy PF2 limit corresponds to the required nominal flowrate Qn H hysteresis corresponds to the required nominal flowrate Qy 10 Parameters PF1 PF2 and H are common for frequency impulse and status mode 5 2 1 3 Impulse output 1 3 OUTPUT P 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 output is on terminal 5 and 7 internally connected Width of the impulse can be set Maximum frequency of impulse output is limited by the impulse width For the shortest impulse 10 ms is maximal frequency 50 Hz Impulse output can be programmed in one of the following modes a Off b Pos Flow c Neg Flow d Abs Flow e On Pos f On Neg g On In h On Out Dose On j Dose Off v
37. figuration After pushing UP key next item 3 GENERAL is selected After pushing ENTER key following submenu is displayed 5 2 2 1 Flowrate units 2 1 FLOW UNIT Function enables you to set flowrate units after pressing the ENTER key With the UP key any item from the list Vs 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 Vs 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 units standard factory setting Flowrate units m3 h User Vh Mag910 amp Mag910E User Guide 26 V1 2 29 04 2011 5 2 2 2 Flowrate resolution 2 2 FLOW RESOL Function enables you to set flowrate resolution after pressing the ENTER key With the UP key any item from the list 0 0 0 0 00 0 000 and 0 0000 can be set To change the current valid 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 maximal resolution It is reduced for high values For example 4 decimal digits resolution is valid up to 99 9999 or 99 99
38. he rest of pipeline Sensor grounding without grounding rings Sensor grounding with grounding rings THE MH 3 4 Turning the display panel The flowmeter Mag910 Mag910E display can rotated 90 Procedure is as follows e Disconnect the power supply from the flowmeter Unscrew the back cover using the special wrench standard part of delivery Detach the two screws in the front plate and remove the plate Unscrew next two legs and carefully turn the display Reassemble in reverse order Mag910 amp Mag910E User Guide 13 V1 2 29 04 2011 4 Electronic unit description 4 1 Front panel display ERE E 1 RS232 connector RS232 port enables you to connect the flowmeter to a personal computer Serial port is galvanically isolated from other electronic 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 Mag910 only 4 keys enable you to change flowmeter configuration and provide flowmeter calibration These are UP DOWN ESC and ENTER keys Mag910 amp Mag910E User Guide 14 V1 2 29 04 2011 4 Magnetic sensor All important displayed information can be read without opening the flowmeter The sensor display can be a
39. impulse output is limited by impulse width Maximum frequency is 50 Hz for the shortest impulse 10 ms Example of impulse output connection Passive impulse output connection Active impulse output connection For more information about impulse output see chapter nput and outputs configuration Note 1 Frequency impulse and status outputs are galvanically connected to each other and galvanically isolated from other electronic circuits Note 2 Active impulse output uses the power supply of the current output Total current take off from this power supply terminal nr 1 must be less than 40 mA Active impulse output is galvanically connected to current output Mag910 amp Mag910E User Guide 17 V1 2 29 04 2011 4 3 4 Status output Mag910 only 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 terminal 5 and 7 internally connected Example of status output connection Passive status output connection Active status output connection For more information about status output see chapter nput and outputs configuration Note 1 Frequency impulse and status outputs are galvanically connected to each other and galvanically isolated from other electronic circuits Note 2 Active status output uses the power supply of the current output Total current take off from this power supply terminal
40. interval for internal datalogger after pressing ENTER key With UP key any value from the row OFF 5 10 15 30 45 60 120 180 240 and CLR can be select To change the current valid value to the new value press the ENTER key ESC key discards changes Datalogger will be cleared after selection item CLR This selection doesn t change datalogger sample interval Mag910 amp Mag910E User Guide 28 V1 2 29 04 2011 Following values are pre set Datalogger standard factory setting Datalogger OFF 5 2 8 General settings 3 GENERAL For general settings configuration or for reading actual settings After pushing UP key next item is selected After pushing ENTER key following submenu is displayed 5 2 3 1 Diameter 3 1 DIAMETER Flowmeters nominal diameter is displayed After pushing UP key Range is displayed 5 2 3 2 Nominal flowrate range QN 3 2 RANGE Nominal flowrate range Qy is displayed in flowrate units After pushing UP key Serial number is displayed 5 2 3 3 Serial number 3 3 SERIAL NR Flowmeters Serial number is displayed After pushing UP key Power supply is displayed 5 2 3 4 Power supply 3 4 POWER SUP Information about power supply voltage and frequency is displayed After pushing UP key Self test is displayed 5 2 3 5 Self lest 3 5 SELFTEST Function enables you to switch an internal self test flowrate simulator On or Off after pressing ENTER key With UP key any it
41. ip Flow current 12 8 Flowrate QI mA is generated for both flowrate directions f Fixed current output is adjusted to fixed value 4 000 20 000 mA Mag910 amp Mag910E User Guide 21 V1 2 29 04 2011 QI value represents a flowrate for a current of 20 mA and can be set independently to the nominal diameter of the sensor QI value can be changed in Setup mode after selecting modes b c d or e Fixed current value can be changed in Setup mode after selecting mode f Following values are pre set Current loop standard factory setting Mode Positive flowrate Ql flowrate corresponds to maximum required nominal flowrate Qn 5 2 1 2 Frequency output 1 2 OUTPUT F Frequency output is a galvanically isolated transistor NPN switch Voltage drop on the switch is 1 V in the made status Maximum switched voltage is 50 V Maximum switched current should not exceed 100 mA Positive output is on terminal 4 negative output is on terminals 5 and 7 internally connected Frequency range of the output is from 0 Hz to 12 kHz The frequency output can be programmed in one of following modes a Off output is not active off state b Pos Flow frequency 1000 Flowrate QF Hz is generated for positive flowrate direction c Neg Flow frequency 1000 Flowrate QF Hz is generated for negative flowrate direction d Abs Flow frequency 1000 abs Flowrate QF Hz is generated for both flowrate directions e On Pos output is off i
42. k Ge eek baa eeu N Gene T otro si REDE ME Ge EUM CER Pe R RET ERE V EDU CR Du Ie DE ende De UE 46 14 ISI TERT Tr 47 14 T C Band CONTO EE oe rer noe pte cote o eei egi pet ere celts eb eere re eL egeta 47 14 2 Warranty as ee epe DE EEE ma Pete Rete erret lena federe oie us ee ED N ee eise HO EE oe ate dete 47 EES ET AAR RR t doeet ee Lites debe blo OE EE eet ea de EE OE do eo bla Ete EE AE 47 Mag910 amp Mag910E User Guide 2 V1 2 29 04 2011 Mag910 amp Mag910E User Guide 3 V1 2 29 04 2011 1 Introduction 1 1 Measuring principle The flowmeter is designed for electrically conductive fluids Measurement is based on Faraday s law of induction according to which a voltage is induced in an electrically conductive body which passes through a magnetic field The following expression is applicable to the voltage U KxBxvxD where U induced voltage K an instrument constant B magnetic field strength v mean velocity D pipe diameter Thus the induced voltage is proportional to the mean flow velocity when the field strength is constant Inside the electromagnetic flowmeter the fluid passes through a magnetic field applied perpendicular to the direction of flow An electric voltage is induced by the movement of the fluid which must have a minimum electrical conductivity This is proportional to the mean flow velocity and thus to the volume of flow The induced voltage signal is picked up by two electrodes which are in conduc
43. llation 3 1 Sensor location To avoid measuring errors due to gas air entrainment or to a partly filled pipe please observe the following Horizontal standard mounting The sensor tube must always remain full The 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 measurement the slope of reducers should not exceed 8 Vertical mounting Mag910 amp Mag910E User Guide 8 V1 2 29 04 2011 When the sensor is mounted on a vertical 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 Valves Suitable location of a shutoff valve is downstream of a sensor Mag910 amp Mag910E User Guide 9 V1 2 29 04 2011 Removal during maintenance If the application requires removal of the sensor for periodic maintenance it is recommended to install a bypass section as the following drawing AQ y See TS N N
44. located on the sensor The following information is on the plate Flow direction Type i N DN nominal diameter 10 800 mm PN nominal pressure 6 25 x100kPa C arkon L3 x flow systems Serial Type MAG910 C25HR16D220ASS number 25 16 310061 2004 20 60 C 5 m3 h IP67 95 250V AC www arkon co uk www rtm expolink com Production Year Temperature Flowrate range IN Protection Power supply version Manufacturer Mag910 amp Mag910E User Guide 41 V1 2 29 04 2011 Remote version Type plate on the flanged sensor Flow direction Type M 2m arkon L3 x flow systems DN nominal diameter 10 800 mm PN nominal pressure 6 25 x100kPa SS Serial MAG910 R25HR16D220ASS number 25 16 312061 2004 20 70 C 5 m3 h IP67 www arkon co uk www rtm expolink com Production Year NN Temperature Flowrate range Protection Manufacturer Type plate on the converter Type arkon x x flow systems T Bd zE MAG910 R25HR16D220ASS 312061 2004 IP65 95 250V AC www arkon co uk www rtm expolink com d e e amp c 5 n c H z T E S j g D T O E 5 Ez e e e H N kzi T lt Mag910 amp Mag910E User Guide 42 V1 2 29 04 2011 10 Technical data Nominal size DN10 to DN800 Nominal pressure PN10 to PN40
45. lowmeter Cable cross section as above 3 2 1 Power supply To connect the compact version to the power supply the following procedure should be used e Unscrew the back cover using the special wrench standard part of delivery e Connect the earth wire yellow green colour to the central grounding point inside the case The end of earth wire must be hooked app 3 mm and fixed to the earth screw e Connect Live and Neutral power cables to the power line terminal clamps with labels 14 L wire brown terminal colour and 13 N wire blue terminal colour e Screw on the back cover e Switch on the power supply T315mA GND central grounding point L line wire N line wire Note Be careful to avoid following problems during electrical installation e Do not cross or loop cables inside electronic unit e Use separate cable entries for power supply and signal wires 3 2 2 Electric connection between converter and sensor Remote version For remote version converter and flanged sensor are connected with two 2 wire unshielded and 3 wire shielded cables Standard length of cables is 6 meter It is recommended to mount the transmitter not too far from the sible Five terminal connector is located in separated box The same box is used for the converter and also for the sensor Colours of wires are following 3 wire shielded cable shielding is connected to the green wire Blue Brown Electrode 1 EL1 Green Ground Re
46. me function and pulse width e Relay contacts 100V 0 5A with programmable function Mag910 only e Current loop 4 to 20 mA with programmable flowrate and function Input PLC digital input with programmable function Mag910 only Communication e RS485 Mag910 only RS232 Displayed values Flowrate m3 h l s US Gal min user Volume ma US Gal user Positive total negative and auxiliary clearable daily volume Control Keyboard Mag910 only e Magnetic pointer e RS232 and RS485 Mag910 amp Mag910E User Guide 43 V1 2 29 04 2011 11 Ordering information options Mag 910 amp sensor C800HR16D220ASS ue Version Nominal diameter DN Liner Compact C 10 800 Hard rubber HR Remote R Soft rubber SR PTFE PT Connection type Power Supply Electrodes Din D 12V DC 12D Stainless Steel SS BS B 24V DC 24D Titanium ANSI A 115 230V AC 220A Platinum Hastelloy Tantalum Mag 910 Transmitter Only C220A LE Power Supply Version Power Supply Compact C 12V DC 12D Remote R 24V DC 24D 115 230V AC 220A 11 1 Example of order 1pc Mag 910 amp sensor C800HR16D220ASS Mag910 amp Mag910E User Guide 44 Electrodes Power Supply Flanged Nominal pressure PN Liner Nominal diameter DN Version Name of Product Nominal pressure PN 10 16 25 40 Version Name of Product V1 2 29 04 2011 12 Electronic unit exchange Please contact your
47. n 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 otherwise it is on i Dose On output is on when programmed dose is counting otherwise it is off j Dose Off output is off when programmed dose is counting otherwise it is on k On F2 output is on when flowrate is lower than PF2 otherwise it is off I OnsF2 output is on when flowrate is higher than PF2 otherwise it is off m Fixed frequency output is adjusted to fixed value 10 12000 Hz If setting the flow limit is chosen hysteresis H can be set too Hysteresis is a tolerance field on one side of flow limits PF1 and PF2 The output status changes indicates crossing over the pre set limit when the immediate flowrate crosses over the value PF2 or goes below limit PF1 The output status comes back to the default status when the immediate flowrate decreases under the value PF2 H or increases over limit PF1 H again OFF 4 gt te Mode g with non zero hysteresis i i ON PF1 PF1 H PF2 H PF2 Mode h with non zero hysteresis OFF ON 3 pi ie PF1 PF14H PF2 H PF2 OFF Fm Mode k with non zero hysteresis ON PF2 H PF2 OFF Mode l with non zero hyster
48. ng this limit activates the appropriate digital output PF2 flowrate limit constant It represents high limit flowrate Crossing this limit activates the appropriate digital output H flowrate limit constant It represents hysteresis by evaluating limits PF1 and PF2 Auxiliary volume counter second Total Volume counter Can be cleared by pushing RIGHT key It is usually used for measuring volume during day month etc RS232 serial bus It enables remote control of instruments by a computer Only one instrument can be connected to one RS232 bus Cable length between PC and instrument is limited to app 10 metres RS485 serial bus It enables remote control of instruments by a computer To the RS485 can be connected more instruments max 16 Total cable length is limited to app 800 metres Mag910 amp Mag910E User Guide 46 V1 2 29 04 2011 14 Appendix 14 1 CE and conformity Electromagnetic flowmeter is conformed to requirements for bearing CE mark e Electromagnetic flowmeter electronic unit both remote and compact version meet safety requirements according to standard EN 61010 1 including amendment A2 e Electromagnetic flowmeter electronic unit both remote and compact version meets EMC requirements according to standard EN 61000 3 EN 61000 4 EN 61000 6 e Pipe with sensor meets requirements of Pressure Equipment Directive 97 23 EC e Both the pipe and electronic unit meet the requirements of degree of prote
49. nimum flowrate value indicated since last reset longer use of the Lo 26 28 mah magnet Minimum Flowrate Mag910 amp Mag910E User Guide 20 V1 2 29 04 2011 5 1 9 Datalogger Mag910 only Number of samples stored in datalogger and percentage used Datalosser az Individual samples value can be read after pushing RIGHT key In this Samples TIZ submenu samples are read sequentially Next sample Flowrate with Date and Time is displayed after pushing UP key Sequential reading submenu is left after pushing RIGHT key or after displaying all values After pushing UP key Current Flowrate Total Volume is displayed z2H 42 66 83 20653 Datalogger capacity is more than 10000 samples typical 15000 F 126 83 n ch samples These formats are changed pushing key UP or by short activating of the magnet 5 2 Setup menu Note For version Mag910E is the Setup menu accessible only using the computer and software Flow910 In this menu the flowmeter parameters measuring output communication etc can be changed Access to the Setup menu is enabled after pushing the ENTER key from the Main menu Note The keyboard is accessible after unscrewing the cover of the electronic unit using the special wrench which is standard part of delivery Correct password must be entered before entering Setup menu Without correct password the access to the Setup menu is refused Default factory set password is 00
50. nr 1 must be less than 40 mA Active status output is galvanically connected to the current output 4 3 5 PLC digital input Mag910 only 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 nput and outputs configuration Note PLC digital input is galvanically isolated from other electronic circuits 4 3 6 Serial port RS485 Mag910 only The serial port RS485 is assigned for online communication between flowmeter and computer It is suitable for real time flowmeter monitoring In contrast to the RS232 serial port which is suitable for one shot configuration or calibration of the flowmeter The RS485 can be connected to up to 16 flowmeters together and the total connection length of all wires can be up to 800 meters Positive output A is on terminal 11 negative output B on terminal 12 Example of three flowmeters and one computer interconnection All flowmeters and computer are connected parallel using twisted pair cable At each end of the communications line should be 470 terminations 470 Q Interconnection of three flowmeters and computer using RS485 bus Flowmeters are marked with numbers These numbers are equal to the flowmeters RS485 address Program Flow910 is designed for flowmeter control using RS485 or RS232 serial bus Note Communication through the serial port RS485 is
51. pose 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 password required ESC l MAIN gt ENTER SETUP PASSWORD ENTER SETUP MENU MENU gt ENTER CALIBRATION PASSWORD ENTER CALIBRATION MENU gt ENTER SERVICE PASSWORD ENTER SERVICE MENU CALIBRATION SETUP RHOWMETEB SERVICE MENU MENU MENU 3 GENERAL 4 CALIBRATION 5 SERVICE Mag910 amp Mag910E User Guide 32 V1 2 29 04 2011 Key UP INPUT OUTPUT submenu structure 1 B RS485 address 0 255 RS485 Addr 1 A Baud rate 4800 9600 19200 RS485 B R 1 9 Flowrate for hyst Hysteresis 1 8 Flowrate for F2 Limit F2 1 7 Flowrate for F1 Limit F1 1 6 Clear Volume Digital input PLC Dose Dosing volume Off On F1 On gt F1 Dose Off 15 Dose On Status output relays Oo Out On Negative On Positive Off 1 4 Pulse width in ms Pulse width Resolution 10 ms On lt F1 od On F1 5 Dose Off Q Dose On 5 On Out rule od ut On Negative p On Positive Absolute Flowrate Volume for 1 puls
52. put and outputs configuration Mag910 amp Mag910E User Guide 16 V1 2 29 04 2011 4 3 2 Frequency output The frequency output is a galvanically isolated transistor NPN switch Voltage drop on the switch is 1 V in the made status Maximum switched voltage is 50 V Maximum switched current should not exceed 100 mA Positive output is on terminal 4 negative output is on terminals 5 and 7 internally connected Frequency range of the output is from 0 Hz to 12 kHz Example of the frequency output connection Passive frequency output connection Active frequency output connection For more information about frequency output see chapter nput and outputs configuration Note 1 Frequency impulse and status outputs are galvanically connected to each other and galvanically isolated from other electronic circuits Note 2 Active frequency output uses the power supply of the current output Total current take off from 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 output is on terminal 5 and 7 internally connected Width of the impulse can be set Maximum frequency of
53. shows dimensions of the electronic unit for the remote version Dimensions are in millimetres Weight 5 1 kg 8 1 3 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 EN1092 Flanges in ANSI version meet requirements of ANSI B 16 5 standard Mag910 amp Mag910E User Guide 38 V1 2 29 04 2011 AL S S DIH DN mm PN bar D DIN D ANSI mm A mm L mm Weight kg mm 10 16 90 88 9 140 150 3 15 16 95 88 9 145 200 3 20 16 105 98 4 150 200 3 5 25 16 115 107 9 155 200 3 5 32 16 140 117 5 165 200 5 40 16 150 127 175 200 6 50 16 165 152 4 185 200 7 65 16 185 177 8 200 200 9 80 16 200 190 5 215 200 11 100 16 220 228 6 235 200 12 125 16 250 254 265 300 22 150 16 285 279 4 295 300 24 200 16 340 342 9 355 400 35 250 10 395 406 4 435 400 42 300 10 445 482 6 485 500 57 350 10 505 533 4 535 500 72 400 10 565 596 9 580 500 95 500 10 670 698 5 695 500 120 600 10 780 812 8 800 600 160 700 10 895 927 1 900 700 230 800 10 1015 1060 5 1010 800 330 Table 1 Mag910 dimensions and weights DIN ANSI flanges 8 2 Used materials Electromagnetic flowmeter is made from materials which meet international standards and conventions Lin
54. sis is displayed in the same format as the flowrate To change the current valid value to the new value press the ENTER key ESC key discards changes Following values are pre set Hysteresis standard factory setting H limit corresponds to the required nominal flowrate Qy 10 5 2 1 10 RS485 baud rate 1 A RS485 B R Mag910 only Function enables you to set parameter baud rate of RS485 interface after pressing ENTER key With the UP key any value from the row 4800 9600 or 19200 Bd 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 Baud rate standard factory setting Baud Rate 9600 Bd 5 2 1 11 RS485 address 1 B RS485 ADDR Mag910 only Function enables to set parameter address of RS485 interface after pressing ENTER key With the UP and RIGHT keys any value between 0 and 255 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 Baud rate standard factory setting ADDR 00 Note RS485 address is important in case of connecting more flowmeters to common RS485 bus Each flowmeter has its own RS485 address The connected computer can control communication between these flowmeters using theirs addresses Communication will be excluded in case of two equal addresses 5 2 2 Flowmeter configuration 2 FLOWMETER For flowmeter parameters con
55. ssed Power line interference voltages coupled in the primary head or in the connecting cables are similarly suppressed Mag910 amp Mag910E User Guide 4 V1 2 29 04 2011 1 2 Basic features The inductive flow meter Mag910 is designed to measure indicate and record the instantaneous and total flow of the conductive media flowing through the sensor The flow meter Mag910 records both forward and reverse flows As there are no moving parts in the flow profile the Mag910 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 Mag910 is for use in the Chemical Industry Paper Industry Water and Wastewater Treatment Industry and most other process industries Features The inductive flowmeter Mag910 is a highly accurate and stable device The construction of the Mag910 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 Mag910 is equipped with 6 s
56. t arkon co uk Sales office office arkon co uk Office hours 8 30 18 00 GMT 1 Direct technical support 8 00 17 00 GMT 1 Mag910 amp Mag910E User Guide 47 V1 2 29 04 2011 Mag910 amp Mag910E User Guide 48 V1 2 29 04 2011
57. tandard isolated outputs 4 to 20mA either active or passive frequency output impulse output status relays output RS485 and RS232 output User can configure these outputs Status and RS485 outputs are not available for Mag910E Power supply Both versions of the standard 115V 230V power supply and 24V DC AC power supply are available Mag910 amp Mag910E User Guide 5 V1 2 29 04 2011 2 Preparing for start up 2 1 Inspecting the contents of the package Basic package includes the following items Flanged sensor Electronic Transmitter can be integral or remote Spare fuse Operating manual Calibration certificate Special wrench for opening the housing covers Magnet for control without opening the housing Software Flow910 RS232 cable The flowmeter is delivered ready for use after connecting to the power supply Please check that it has been correctly installed 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 follows e Disconnect the power supply from the flowmeter e Unscrew the back cover using the special wrench standard part of delivery e The fuse holder is loc
58. ter to the PC a standard RS232 cable 1 1 can be used To connect a PC to the flowmeter follow this procedure e 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 the cover Note Serial port RS232 is galvanically isolated from other electronic circuits Mag910 amp Mag910E User Guide 19 V1 2 29 04 2011 5 Operation 5 1 Main menu The flowmeter is in Main menu after the switching power on or after repeatedly pushing the ESC key This entire menu can be operated with a magnetic without opening the housing Short use of the magnet less than 3 seconds is equal to pushing UP key Longer use of the magnet more than 3 seconds is equal to pushing RIGHT key The following information can be displayed in the Main Menu Note Mag910E can be operated by a magnetic pointer only 5 1 1 Current Flowrate Total Volume Basic display after power on Current flowrate is displayed on the first F 176 83 mi h line Total volume is displayed on the second line Flow in the forward 2713 0912 MI direction is added to this volume Flow in the reverse direction is subtracted Measuring parameters units resolution moving average etc are sel
59. tive contact with the fluid and transmitted to a signal converter for a standardized output signal This method of measurement offers the following advantages e No pressure loss through pipe constriction or protruding parts e 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 e Only the tube liner and the electrodes are in contact with the fluid e Already the original signal produced is an electrical voltage which is an exact linear function of the mean flow velocity e Measurement is independent of the flow profile and other properties of the fluid The magnetic field of the primary head is generated by a square wave current fed from the signal converter to the field coils This field current alternates between positive and negative values Alternate positive and negativelowrate proportional signal voltages are generated at the same frequency by the effect of the magnetic field which is proportional to the current The positive and negative voltages at the primary head electrodes are subtracted from one another in the signal converter Subtraction always takes place when the field current has reached its stationary value so that constant interference voltages or external or fault voltages changing slowly in relation to the easuring cycle are suppre
60. ucture Mag910 only sees see se se ee Ge ee ee ee ee ee Ge GR GR RA ee 32 6 Error MISSE SI ITE TTD T TT ledd 36 EN Cllr LE TIE cet cR T RE EE 37 T3 Advice for correct operation RI e e Rede ge aeter reote te eene 37 7 2 Periodical maintenance a c eese tt De EE tenen cepa eee REFER ee cae bee Lo ee ashe ocho D BR ERE ER ER 37 4 357 What todo id case of failure sitet recte te edet Eae e et Gees c GE Se EL ev vada deer Ge DE Ye r 37 8 Application InNfOrmatiOn aaaaaaccsaccsscsssnsnsnnnnnnnannnannnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnm 38 8 1 Weight and dimensions x ce eed d rt te de ect peer 38 8 1 1 Electronic unit compact Versi n aoeeoe see se se nennen Ge GRA GRA RA karna teens nennen 38 8 1 2 Electronic unit remote version rrei esse ees se ee Ge aE Ei EEE EA R r a ee ee ee ee ee 38 EE i o EEE OR RE OE OG OE EHE Ce OE ONE OE OE OE 38 8 2 Used materials EE o RR eR RR oe RO e es 39 8 3 Flowrate versus diameter ie rece emere Se ER De RR L se egeo Ge ER De se e Lana eode Pale e ep EN ees se Ek Tere 40 9 Type plate ii ED see DE SS END ee N N gee ee ie 41 swollen D 43 11 Ordering information options eee neon aeter atri rn eo gebeds Re be eU ek Need ese eX beg Ee ope ee Gesk bede be ee ee 44 TIL Example of order ee RE ee ie rete eode te eee tete ete olet ede 44 12 Electronic unit exchalile io coena de epp n Ere PER Ie DU PIC de ee YR E ESSEN VE ARE RR EET 45 T3 Terminology dorsi do

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