Common faults and solutions of electromagnetic flowmeter

Sewage Flow Meter(https://youtu.be/ysGYH0RgnqM) has no display and output signal:

1. Check whether the electromagnetic flowmeter's power access (including the fuse and fuse) is open or short

2. Check whether the electromagnetic flowmeter's connection cables (excitation cables and signal cables) are open or short-circuited, and whether the wiring terminals are oxidized or corroded. Tighten screws if necessary

3. Check whether the functions related to the converter are enabled. For the newly installed or replaced sensor, check whether the arrow of the sensor is in the same direction as the fluid direction. The process personnel should cooperate to determine whether the sensor is filled with liquid. Whether the sensor can be filled with liquid is related to its installation position, and it should be installed according to the regulations

4. Check whether the sewage flow meter’s converter is damaged and whether the sensor is normal. If there is a problem with the electromagnetic flowmeter's converter, spare parts can be used or the circuit board of the normal instrument of the same model can be replaced to check and judge

sewage flow meter overfull display and output signal:

1. Check whether the magnetic type flow meter's sensor has an empty pipe

2. Check whether magnetic type flow meter's signal cables are disconnected

3. Check whether interference signals are imported from pipes or cables

4. Check whether the magnetic type flow meter's converter Settings are incorrect

5. Check whether the rear meter is incorrectly configured

sewage flow meter display and output signal fluctuation, and instability:

1. Check the friction potential generated by the liquid itself containing more bubble fibers and particles

2. Check for external interference

3. Check the fluid itself's pulsation and instability

4. Check whether there is a chemical reaction between the medium and the electrode, whether the electrode leaks, and when there are conditions to disassemble, be sure to check and clean the sensor tube, check whether there is lamination on the inner wall of the tube, whether there is lamination or scaling on the surface of the electrode, which will lead to a decrease in the insulation resistance of the electrode, and make the measurement error

The display and output signal of the sewage flow meter are inconsistent with the actual flow rate:

1. Check whether the sensor has a full tube

2. Check the insulation performance of the magnetic type flow meter's sensor electrodes

3. Check whether the cable is broken, short-circuited, or the insulation drops

4. Check whether the electromagnetic flowmeter's converter menu Settings are correct