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Oval MAG-OVAL III MGS, Инструкция по эксплуатации

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C

−

102-1-E

4

1. GENERAL

Electromagnetic  flowmeters  operate  on  the  basis  of  Faraday's  law  of  electromagnetic  induction.  When  a 
conductive  liquid  flows  through  the  magnetic  field  applied  perpendicular  to  the  direction  of  flow,  an 
electromotive force (EMF) is induced proportionally to the average velocity of flow according to Faraday's law. A 
pair  of  electrodes  located  on  the  flow  tube  wall  picks  up  the  induced  EMF  which  is  then  amplified  in  the 
transmitter to determine the volumetric flow rate.

FEATURES

(1) Easy  handling  and  low  pressure  loss  contribute  to  low  cost  of  installation  and  operation  of  the  flowmeter, 

providing excellent cost-effectiveness.

(2) Four  kinds  of  electrodes  are  available  for  wetted  area.  Application  to  highly  corrosive  liquids  is  also 

supported.

(3) In addition to magnet handling on the site, monitoring, various kinds of setting change, logging, loop test, 

and self-diagnosis are available.

(4) Wide measuring range starting from zero.

■

 Part names

Electrodes

GND electrode

Cable entries

GND terminal

Transmitter

Adapter

Probe

Product nameplate

ERR.

ALM.

Alarm/Error

 indicator

[ENT] key indicator

[SEL] key

indicator

[SEL] key

[ENT] key

Magnet

LCD Upper row 

instant flow rate indicator

LCD bottom row 

total flow indicator

Unit display

Unit display

Содержание MAG-OVAL III MGS

Страница 1: ...gent quality control and thoroughly tested and inspected before shipment from our factory This manual is designed to assist the user to obtain the best performance of this product throughout its service life In order to take sufficient care please read this instruction carefully before the use and keep it handy for quick reference ...

Страница 2: ...of Display 16 9 2 Operation Basics 16 9 2 1 Setup Mode and Measure Mode 16 9 2 2 Key Operations 17 10 MEASURE MODE 18 10 1 Measure Mode Screen 18 10 2 Resetting Resettable Total 18 10 3 Error Alarm and Status Display 19 10 4 Screen Change for Instant and Total Flow Indication 20 11 OPERATIONS IN SETUP MODE 21 11 1 Transition from Measure Mode to Setup Mode 21 11 2 Menu Operation in Setup Mode 22 1...

Страница 3: ...TION 44 18 1 Self diagnosis Items 44 18 2 Diagnosing All Items 45 18 3 Diagnosing Self diagnosis Items Individually 46 19 LCD CHECK 46 20 ERROR ALARM STATUS LIST 47 20 1 Error Alarm List 47 20 2 Other Statuses 48 21 PARAMETER LIST 49 22 GENERAL SPECIFICATIONS 50 23 FLOW RANGE 51 24 PRODUCT CODE EXPLANATION 52 25 OUTLINE DIMENSIONS 53 This manual uses the precaution words NOTE CAUTION and WARNING a...

Страница 4: ...ow pressure loss contribute to low cost of installation and operation of the flowmeter providing excellent cost effectiveness 2 Four kinds of electrodes are available for wetted area Application to highly corrosive liquids is also supported 3 In addition to magnet handling on the site monitoring various kinds of setting change logging loop test and self diagnosis are available 4 Wide measuring ran...

Страница 5: ...ed with liquid An electromagnetic flowmeter requires its internal space to be completely filled with the process liquid Ensure of a fully filled flow tube during operation 4 About field wiring For intercabling between the electromagnetic flowmeter and receiving instrument see the section Wiring Connections Please remember to check terminal numbers for correct connections before operation Magnetic ...

Страница 6: ...upstream of the probe Flow 5D min Probe Flow Partially open valve 10D min Probe 1 2 D Nominal pipe diameter 3 2 Keeping the Flow Tube Completely Filled 1 It is essential that the electromagnetic flowmeter be installed in a pipeline completely filled with the process fluid 2 In cases of horizontal installation or vertical installation where the fluid flows top to bottom we recommend providing a ris...

Страница 7: ...trodes FLOW FLOW Horizontal run Transmitter up with axis of electrodes horizontal Vertical run Cable entries pointing downward Bottom Top flow direction is preferable Cable entries face down UP CAUTION With liquids that contain suspended solids or liquids that can separate easily a vertical run is suggested to reduce the possibility of solids deposition wear and separation to a minimum 3 4 Bypass ...

Страница 8: ...n place Do not seal on threads Fig 4 1 3 5 Prevention of Negative Pressure In order to maintain a long term service life of the probe take positive measures to eliminate circumstances that can create negative pressure in the pipeline 1 If both upstream and downstream valves remain closed with fluid temperature higher than that of the atmosphere fluid contraction may take place as the fluid cools d...

Страница 9: ...ets when making pipe connections c Tighten connecting bolts carefully to avoid uneven tightening or over tightening Refer to the flange tightening torque specifications in the table on the right 2 Maintaining accuracy a To ensure concentric alignment of the probe do not fail to use the adjust rings furnished or adjust collars for nominal size 150mm meter with JIS 10K flange rating b Exercise care ...

Страница 10: ... 6mm tubes are too thin to support the meter Therefore secure the transmitter in the manner shown in the figure below Fig 4 5 Installation on a horizontal pipe is shown with dotted lines 2 Pipe Adapter Sec A A 181 6 A A Fig 4 6 MAG OVAL III Transmitter Hold down Hardware Using the U bolt and mounting bracket supplied with the flowmeter fix the flowmeter to a horizontal or vertical pipe with nomina...

Страница 11: ...Hex key M4 1 Using hex wrench loosen the locking setscrew M4 securing the display cover in the locked position Display cover A flat tool that does not damage the finish Turn 2 Using a flat tool loosen the display cover by carefully turning it counterclockwise and hand rotate it further until the cover comes off 3 Remove the mounting screws 4 places with a phillips screwdriver and detach the displa...

Страница 12: ...tput signals Fig 6 2 Terminal Block Cover Removal Fig 6 3 Terminal Board Fig 6 1 5 GROUNDING The electromotive force detected across electrodes of the probe is a very weak voltage measured against the reference potential of metered liquid Accordingly earth grounding better than Class C grounding is essential to maintain the probe and metered liquid at the same potential Illustrated below are the p...

Страница 13: ...inal No Label Description Output signal TB2 1 PULSE Pulse output Open drain pulse output or voltage pulse output 2 PULSE 3 STATUS Status output Open collector output 4 STATUS 5 Unused 6 Unused 7 Unused 8 Unused 9 ANALOG Analog output 10 ANALOG 11 RS485 RS 485 communication 12 RS485 Power TB1 1 LINE Power with DC power 2 GND Ground 3 NEUT Power with DC power 4 EARTH Ground Power fuse Output signal ...

Страница 14: ...put waveform is attenuated by resistance R and line capacity C of the receiver The output frequency shall be set to F Hz Line capacity C shall be set to 0 1μF km When setting voltage pulse The pulse output waveform is attenuated by resistance R and line capacity C in the flowmeter The resistance factor of R is included in the following coefficient The output frequency shall be set to F Hz Line cap...

Страница 15: ...ily over long periods of time If trouble arises diagnose the nature of trouble according to the troubleshooting chart below for the possible solution When error alarm is being generated check the detail of error in accordance with 20 ERROR ALARM STATUS LIST Quick Troubleshooting Problems Confirm No Output Unstable Zero Unstable Output Large Meter Error 1 The wiring is correct 2 The power is suffic...

Страница 16: ...error or alarm 6 ENT key indicator Turns on when ENT key is operated 7 ENT key ENT key Operated by the use of attached selector magnet 8 SEL key indicator Turns on when SEL key is operated 9 SEL key SEL key Operated by the use of attached selector magnet 9 2 Operation Basics 9 2 1 Setup Mode and Measure Mode This flowmeter is provided with two modes Measure mode and Setup mode Measure mode The sta...

Страница 17: ...st bar disappears it stays at the ordinary depression 2 Prolonged depression Pressing and holding the SEL key or ENT key causes bars to be displayed at the bottom row display and then bars disappear one by one from the left Keeping the key ON until all bars disappear will start the prolonged depression If you set the key to OFF before all bars disappear it goes back to the ordinary operation 1 Ex ...

Страница 18: ...ator indicates resettable total flow R Total pressing ENT selects the bottom row indicator By pressing and holding ENT while the bottom row indicator is in the focused state blinking resetting the resettable total can be executed Press and hold ENT ENT ENT SEL Press and hold ENT ENT ENT SEL When instant flow rate exceeds the digits of display Instant flow rate indication overflows and starts blink...

Страница 19: ...he LCD bottom row indicates error alarm occurred status description and measurement value alternately At 1 sec intervals NOTE For the details of number and description refer to 20 ERROR ALARM STATUS LIST NOTE Error alarm indication continues until the problem is solved Status indication is given when operation is conducted from the outside through communication and continues until the operation is...

Страница 20: ...sure mode flow rate indication Instant flow rate indication Resettable total flow indication Focused blinking Accumulated total flow indication Focus state blinking is terminated when no key entry is made for 10 seconds Selectable indication Top row indicator Bottom row indicator Display Item Description Example Instant flow rate Indicates instant flow rate 12 345 L min flow rate Indicates flow ra...

Страница 21: ...s to the state of entering password NOTE The method of entering password is the same as that for parameter setting The password feature is Invalid and default password is 0000 in the setting at the factory shipment If you wish to validate the password feature carefully manage your password If you forget your password contact nearest OVAL office or service center CAUTION To prevent accidental erron...

Страница 22: ...arried out by Press and hold ENT Press and hold SEL returns to the higher layer When Press and hold SEL is executed in the top most layer Layer code 01 00 to 14 00 exit from the Setup mode occurs and the Measure mode is restored Menu operation in Measure mode Layer code Returns to Measure mode Top most layer Bottom layer Transition between layers SEL Switches item Press and hold SEL Returns to hig...

Страница 23: ...nging backlight setting Parameter setting of selection system such as backlight setting ON OFF AUTO is carried out by the following procedure Press and hold ENT Press and hold SEL Parameter setting in selection system Press and hold ENT SEL SEL SEL SEL Switches setting value Press and hold SEL Cancel ENT Invalid Press and hold ENT Fix Parameter Edit mode When transition to Edit mode is completed p...

Страница 24: ...tion NOTE If the numeral entered exceeds the parameter settable range the edit screen of 2 is restored after Set Err is indicated Change the numeral and fix the numeral again or use Press and hold SEL to cancel Press and hold ENT Press and hold SEL Numeric parameter setting Press and hold ENT SEL ENT Parameter Edit mode When transition to Edit mode is completed the focused digit starts blinking Au...

Страница 25: ...45 X 102 is given Therefore enter 1 2345E2 102 100 Setting negative exponent is also available For example to set 0 012345 1 2345 X 10 2 is given in exponential indication Therefore enter 1 2345 2 10 2 0 01 For the symbol of exponent and E can be switched by SEL by focusing the E at the second digit from the right shows negative exponent and E shows positive exponent ...

Страница 26: ...arameter 3 F Prm3 Parameter major item Top row display Selects display Bottom row display Displays total flow Enter password 00 00 01 00 02 00 03 00 04 00 05 00 06 00 07 00 08 00 09 00 10 00 11 00 12 00 13 00 14 00 PAS wd Parameter name Layer code Major item Secondary item Third item Parameter display symbol 01 01 01 02 01 03 01 04 Set display dSP St Set flow parameter 1 F Prm1 Set self diagnosis ...

Страница 27: ...c flow rate mass flow rate the total value is reset In case of mass flow rate display density shall be set additionally as fixed conversion factor Can change the number of digits below decimal point of instant flow rate indicated on the top row display Can change the unit of total flow indicated on the bottom row display Common to accumu lated total and resettable total In case of mass flow rate d...

Страница 28: ...on factor 02 05 Con FC FL rnG Noise failure suppression Auto gain compensation AG Com 03 01 03 02 Flow direction 03 03 FL dir In SuP m s modE SEL Press and hold SEL Press and hold ENT Other Displays instant flow rate Displays flow rate Displays flow velocity Setup mode Set flow parameter 2 Set flow parameter 3 Parameter major item Top row display Selects display Enter password Set display Set flow...

Страница 29: ...ange for permitting variation is set by to max flow measured Automatically calibrates and compensates the variation of transmitter internal circuit due to ambient temperature etc When this feature is validated measurement is suspended display and output are held for approx 0 5 sec at intervals of 24 min Therefore do not use this flowmeter in the system requiring response such as in batch measureme...

Страница 30: ... output low cut 05 04 Lo Cut 4mA Status output function 07 01 Status output mode 07 02 S modE S FunC m s modE SEL Press and hold SEL Press and hold ENT Other ENT Displays instant flow rate Total flow Displays flow rate Resettable total flow Displays flow velocity Setup mode Set flow parameter 2 Set flow parameter 3 Parameter major item Top row display Selects display Bottom row display Displays to...

Страница 31: ...ocation of status output For details refer to 15 STATUS OUTPUT FUNCTION Sets status output logic For details refer to 15 STATUS OUTPUT FUNCTION no FunC Status output not used Err StS Error alarm status output HL ALA Higher and lower limit alarm output FLo dir Flow direction OFF ACt Off Active On ACt On Active Content of parameter Default Setting range 0 0 Can select pulse output mode Frequency pul...

Страница 32: ...Self diagnosis execution state 08 08 diAG S SiG AL Analog output at error 09 01 Pulse output at error 09 02 Er PLS Er AnA m s modE SEL Press and hold SEL Press and hold ENT Other Parameter name Layer code Major item Secondary item Third item Parameter display symbol ENT Displays instant flow rate Total flow Displays flow rate Resettable total flow Displays flow velocity Setup mode Set flow paramet...

Страница 33: ...r through communication Sets the pulse output mode at the detection of an error For details refer to PULSE OUTPUT FUNCTION dn SCLE Down scale 2 4mA HoLd ZEro 4mA no FunC Not assigned uP SCLE Up scale 21 6mA ZEro 0Hz no FunC Not assigned uP SCLE Up scale 110 of max output HoLd Content of parameter Default Setting range Sets the High alarm point When a flow greater than the preset flow occurs this a...

Страница 34: ...ion CHECK Set analog output A Out Set pulse output P Out Set error output Er Out Set alarm ALArm 12 01 12 02 12 03 Pulse fixed output LP PLS Status fixed output LP StS Analog fixed output LP AnA Set status output S Out Select status output object St SEL Parameter secondary item Cirt S Measurement error signal diagnosis 11 03 SiGL S Empty pipe detection diagnosis 11 04 Enpy S RS485 communication sp...

Страница 35: ... probe is wetted and diagnoses the state of error entry in the pipe under measurement This setting is valid in the auto self diagnosis in normal measurement When diagnosis is started from Menu or through communication diagnosis is carried out regardless of this setting On OFF On OFF On OFF On OFF Content of parameter Default Setting range Content of parameter Default Setting range 19200 0 0 to 63 ...

Страница 36: ...n is set to 0 5s as standard the response of actual analog output is the one added by this flow measurement damping Analog output low cut The output is fixed to 4mA until the specified flow rate is reached It is set by to the output span Low cut 20mA flow rate Low cut flow rate 20mA flow rate 4mA flow rate X 100 Example of analog output In case 20L min is set to 4mA 29 5L min to 20mA and low cut t...

Страница 37: ...riation of current Adjustment of 4mA output Enter the adjustment mode from trm 04 layer code 13 01 of A trim submenu in the Setup mode Perform adjustment for 20mA from the menu trm 20 in the same manner After setting Press and hold SEL from the Menu to return to A trim display Then simulative output is cleared and normal output state is restored Simulative output continues in the A trim submenu Ad...

Страница 38: ...ion of the pulse output Either frequency pulse mode or factored pulse mode weighted pulse can be selected Pulse calculation mode setting is carried out from P Out P modE of the Setup menu Frequency pulse mode Output frequency is determined by using frequency factor and the flow rate at a certain point The output frequency is determined by the following formula Output frequency Hz Frequency factor ...

Страница 39: ...ATUS LIST Factored pulse mode In this method flow rate per pulse is specified This mode is used when pulse output is entered to the total counter etc The output frequency is determined by the following formula when instant flow rate unit is L min and total flow unit is L Output frequency Hz Instant flow rate L min 60 Pulse weighting L P Set the output frequency so that at the time of maximum flow ...

Страница 40: ...ws the alarm to be cleared 15 3 Flow Direction Output Function Output corresponds to the sign of flow direction In the case of reverse flow when instant flow rate indicated on LCD display shows negative value active output is generated On Active Normal Alarm occurrence Normal recovery Normal Alarm occurrence Normal recovery Transistor OFF Transistor ON Off Active Transistor OFF Transistor ON Fig 1...

Страница 41: ...s output terminal simulatively 16 1 Simulative Output Operation Select the item to be output simulatively from the LP tSt submenu of the Setup menu Both pulse and status simultative output operations can be performed by the same procedure When 10 minutes pass without any key operation during output operation output stops and the Measure mode is restored Simulative output Analog output SEL Changes ...

Страница 42: ...perating environment Supporting OS Memory RAM Hard disk Windows XP Windows Vista Windows 7 256MB or more Free space of 10MB or more Functions Monitoring of measurement value Numeral display graphic display Logging and saving of instant flow rate flow rate flow velocity Storage format CSV file Logging period 0 2 sec to 1 hour 2 Reading setting change saving of parameter Example of display screen of...

Страница 43: ...ting Diagnosis and Maintenance Functions Setting polling address Polling address is set from P Addr of the CHECK submenu Refer to 12 5 Display Transition 5 Setting Diagnosis and Maintenance Functions Polling address is set for identifying the instrument when two or more instruments are connected at the multiple points on the same communication line Be sure to set the polling address so that no ins...

Страница 44: ...rcuit abnormality diagnosis Checks for any abnormality in the coil or exciting circuit of the probe If the measurement value is outside the specified range exact measurement may not be performed If diagnosis shows abnormality contact your nearest sales office or service center Empty detection diagnosis Checks whether the electrode of the probe is wetted or not As this flowmeter is based on the ass...

Страница 45: ... in any of diagnosis items error or alarm No of the corresponding item is displayed For the details of error alarm refer to 20 ERROR ALARM STATUS LIST Started by Press and hold ENT Ex Er 21 Abnormality found in coil exciting circuit Press and hold SEL returns to the original screen The screen during self diagnosis An item in self diagnosis operation is indicated on the bottom row of LCD Display ch...

Страница 46: ...ue for quick study of cause and countermeasure Press and hold ENT Press and hold SEL Started by Press and hold ENT Measurement value and judgment result are displayed alternately at certain intervals Coil exciting circuit abnormality diagnosis No abnormality Abnormal Press and hold SEL restores original screen 19 LCD CHECK This function displays all segments of LCD for verifying the soundness of t...

Страница 47: ...eds the limit Set the output to the value within the limit See 13 ANALOG OUTPUT FUNCTION High Low point setting alarm SEt ALAr AL 34 Entered alarm point setting is not appropriate exceeding the limit Set High alarm point below measurement range setting Set Low alarm point below High alarm point Set hysteresis value equal to or lower than the difference between High alarm and Low alarm points Outpu...

Страница 48: ...a state where setting is inappropriate or normal flow measurement is not available due to occurrence of significant problem Alarm is a state where measurement is executed but output or display is not available normally Status is to report the specific processing or operation self diagnosis etc is in process through communication not affecting the measurement 20 2 Other Statuses About measurement a...

Страница 49: ...or Flow rate factor 06 03 As specified Low cut Pulse output low cut 06 04 As specified Pulse weight Pulse weight 06 05 As specified Status output Status output function Status output function 07 01 No Function Status output mode Status output mode 07 02 On Active Status output item selection Status output select Overflow error Overflow error 08 01 OFF Hardware failure Hardware failure 08 02 OFF Pa...

Страница 50: ...evel 15VDC min Output impedance 2 2kΩ Pulse type Either factored pulse or frequency pulse is selected 1 Factored pulse Pulse frequency 0 01 to 10000Hz Pulse width Pulse width changes as follows in accordance with the frequency of output pulse In case Pulse frequency 1Hz Pulse ON OFF duty ratio 50 to 50 In case Pulse frequency 1Hz Pulse ON width fixed at 500ms 2 Frequency pulse Upper limit frequenc...

Страница 51: ... 15 10 6 3 10000 5000 1000 500 100 50 10 5 1 0 5 0 1 0 25 0 5 1 2 5 5 10 Flow velocity m s Nominal size mm Flow rate L min NOTE Be aware that accuracy varies with nominal size and full scale flow velocity Nominal Size mm Min range Max flow velocity 0 5m s Max range Max flow velocity 10m s L min m3 h L min m3 h 3 0 to 0 22 0 to 0 013 0 to 4 24 0 to 0 25 6 0 to 0 85 0 to 0 5 0 to 17 0 to 1 10 0 to 2...

Страница 52: ...JIS 10K 2 JIS 20K 3 JIS 30K 4 ASME 150 JPI 150 5 ASME 300 JPI 300 9 Other than above Lining material T Fluorocarbon polymers Electrode material 1 SUS316L 2 Alloy C276 HAST C equiv 5 Tantalum 7 Platinum Power source 6 20 to 30VDC 7 85 to 264VAC 50Hz 8 85 to 264VAC 60Hz Transmitter type E Always E PA28 Earth ground electrode material identical with electrodes material 1 SUS316L 1 2 Alloy C276 HAST C...

Страница 53: ...D Approx Weight kg 25 100 293 258 70 5 8 40 100 309 266 80 6 5 50 100 323 273 100 7 1 80 150 353 288 130 9 8 100 150 374 303 5 161 12 4 150 210 441 332 218 21 9 Nom size mm Screw conn G Approx Weight kg 3 G1 5 7 6 G1 5 7 10 G1 5 7 15 G1 1 4 5 8 Nom size mm L1 L2 S G R 3 6 172 20 41 G1 Rc 1 8 10 Rc 3 8 15 50 G1 1 4 Rc 1 2 4 φ15 Screw in flange Protector wetted parts With fluorocarbon polymers coati...

Страница 54: ...C 102 1 E All specifications are subject to change without notice for improvement 2016 06 Revised 2014 04 Released C 102 1 E 2 ...

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