Case analysis of Electromagnetic Flow Meter fault

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Case analysis of Electromagnetic Flow Meter fault

Case 1: Some one factory use the electromagnetic flow meters to measure and control the flow rate of saturated salt electrolyte. After several months, it was found that the flow rate became smaller and smaller until the flow rate was zero.

Trouble shooting: The measuring electrode resistance of the electromagnetic flow meter is very small. When the sensor is removed, it is found that a layer of yellow rust is deposited on the surface of the insulation layer of the sensor.

Fault handling: The electromagnetic flow meter normally display after cleaning yellow rust.

 

Case 2: AXFA14 electromagnetic flow meter displays maximum value and alarm.

Trouble shooting: Field inspect that electromagnetic flow meter fault code is process alarm, prompt to check wiring or grounding, found that the grounding line is open circuit.

Fault handling: After the grounding wire is connected, the alarm is eliminated and the flow meter returns to normal.

 

Case 3: After a heavy rain, one Electromagnetic flow meter display the maximum value and alarm.

Trouble shooting: Check the parameter Settings. Open the wiring box and find water permeates.

Fault handling: Dry the water with a hair dryer, and wrap the exposed place on the wiring joints with insulating tape. The alarm is eliminated and the flow meter display is normal.

 

Case 4: Two electromagnetic flow meters A and B of the same type on the same pipeline have inconsistent displays, and B has fluctuations.

Trouble shooting: When the electromagnetic flow meter was disassembled for maintenance, B found that the sealing gasket of the sensor was damaged, and a small piece of connected gasket had been hanging in the pipeline.

Fault handling: After replacing the gasket, both flow meters display consistent and stable.

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