DN200 electromagnetic flowmeter maintenance and common sense

DN200 electromagnetic flowmeter is so widely used. In addition to the characteristics, installation and use of electromagnetic flowmeter, and common troubleshooting, attention should also be paid to the maintenance of electromagnetic flowmeter. Just like a car, good service life will naturally be delayed. Maintenance of DN200 electromagnetic flowmeter The electromagnetic flowmeter converter has a self-diagnostic function. Except for power supply and hardware circuit failures, alarm information can be correctly given for failures in general applications. This information will give corresponding prompts in the lower right corner of the display.

The maintenance and upkeep of DN200 electromagnetic flowmeter mainly includes the following aspects: 1. When this phenomenon occurs in the excitation alarm, 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. Determine whether the converter is faulty. 2. When this happens when the measured flow rate is inaccurate, check whether the fluid is filling 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. 3. When the instrument has no display and 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. 4. When this problem occurs with the empty pipe alarm, you should measure whether the fluid fills the sensor measuring pipe and check whether the signal connection is correct. Check whether the flow sensor electrode is normal. Use wires to short-circuit the converter 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.