Maintenance and Troubleshooting of Split Magnetic Flowmeters

How should the split electromagnetic flowmeter be maintained? How should the faults of the split electromagnetic flowmeter be overhauled? Maintenance and fault maintenance are equally important to the maintenance of split electromagnetic flowmeters.

1) Always observe the sensor power cable and transmission cable (or wire) for damage and aging, and protect the rubber sheath outside the cable.

2) Regularly (usually six months) scrub the electrode surface with a soft cloth to remove dirt or deposits.

3) Remove debris from the upstream straight section of the sensor.

Split magnetic flowmeter troubleshooting:

1) The liquid does not flow and has output: 1. The signal transmission cable is connected to the converter and disconnected; 2. The signal cable is disconnected from the electrode connection; 3. The electrode surface is contaminated or an insulating layer is deposited; 4. The grounding is poor or the circuit is broken.

Solution: 1. Connect the cable; 2. Open the sensor and reconnect it; 3. Scrub the electrode surface; 4. Connect the ground wire.

2) No liquid output flow: 1. The signal transmission cable between the converter and the two core wires is reversed; 2. The power supply is not connected or has poor contact; 3. The sensor instrument pipeline, casing, and the end face have leakage.

Solution: 1. Reverse the head; 2. Connect the power supply and maintain good contact; 3. Repair the sensor.

3) Unstable output: 1. Unsteady flow field; 2. Gas contained in the sensor, large solid block; 3. Virtual connection of electrical connection; 4. Bad grounding; 5. Electrode leakage

Solution: 1. Rebuild the pipeline, or increase the installation of false sensors; 2. Normal phenomenon; 3. Check the wiring, connect the wires; 4. Connect the ground wire; 5. Repair the sensor.

4) The error is too large: 1. The zero point is too high; 2. It is not completely filled with liquid; 3. The distortion of the power supply is too large; 4. The grounding is poor.

Solution: 1. Re-adjust the zero point; 2. Improve the pipeline conditions, the sensor is always full of liquid; 3. Improve the power supply conditions, in line with normal working conditions; 4. Connect the ground wire

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