Electromagnetic flowmeter daily faults and solutions

Case introduction

Daily faults and solutions of electromagnetic flowmeters

Daily faults and solutions of electromagnetic flowmeters? The common troubleshooting methods for electromagnetic flowmeters mainly include the following aspects: 1. The electromagnetic flowmeter has no display. When this fault occurs, you should first check whether the power supply is connected, check whether the power fuse is intact, and check whether the power supply voltage meets the requirements. If the above are normal, the converter should be sent to the manufacturer for repair. 2. Electromagnetic flowmeter excitation alarm. When this phenomenon occurs, you should check whether the excitation wiring x and y are open circuit, and check whether the resistance value of the excitation coil is normal to determine whether the converter is faulty. 3. Electromagnetic flowmeter empty pipe alarm. When this problem occurs, you should measure whether the fluid fills the sensor measuring tube and check whether the signal wiring is correct. Check whether the flow sensor power is normal. Use wires to short-circuit the sensor signal input terminals a, b and c. At this time, if the "empty pipe" alarm prompt is cancelled, it means that the converter is normal. It may be that the conductivity of the measured fluid is low or the empty pipe threshold and empty pipe Range setting error. 4. The flow measured by the electromagnetic flowmeter is inaccurate. When this happens, you should check whether the fluid fills the sensor measuring tube, whether the signal line connection is normal, and whether the sensor coefficient and sensor zero point are set normally according to the sensor label or factory calibration sheet.

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