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Fault Detection and Treatment of Electromagnetic Flowmeter

Author:vacorda    Source:vacorda.com    Date: 2016-08-10 14:20:03

 

      Smart converter and electromagnetic flow sensor composition with electromagnetic flow meter flow measurement, therefore, before processing converter failure, you should first check the status of the pipeline fluid flow, sensors, wiring and other systems is normal!

  • Instrument no Display
aCheck that the power is turned on;
bCheck the power fuse is intact, the fuse should be the same model specifications when replace it;
cCheck whether the supply voltage requirements;
dCheck whether the display contrast adjustment can be adjusted, and adjusted if it is proper; 

eWhen you can not find the problem, please ask the electromagnetic flowmeter manufacturer for maintenance.


  • Excitation Alarm
awhether the Field wiring EX1 and EX2 is open;
bThe total resistance of sensor excitation coil should be less than 150Ω;

cIf a), b) two are normal, the converter is faulty.


electromagnetic flow meter factory

  • Empty Pipe and Electrode Alarm
aMake sure the fluid are full of measuring tube;
bUse the wire make the converter signal input terminal SIG1, SIG2 and SIG GND short circuit, at this time if the "Empty Pipe Alarm" and "abnormal electrode" prompt to undo, indicating the converter correctly, it may be caused by the low conductivity of measured fluid or the electrode is covered by gas;

cCheck the signal wiring is correct.


  • Upper Limit Alarm

Tip output current and output frequency (or pulse) are overrun. Make the flow range large can cancel the upper limit alarm.


  • Lower Limit Alarm

Tip output current and output frequency (or pulse) are overrun. Make the flow range small can cancel the lower limit alarm.


  • System Configuration Error

Have been made intelligent judgment and prompt in flow range setting, flow totalizer units set up and pulse equivalent setting, so it is convenient to modify the settings.


  • System Self-test Alarm

Please ask the electromagnetic flow meter manufacturer for maintenance.


Guanghua Rd, Qingyang Dist, Chengdu, Sichuan Province, China