Mass flow meter common troubleshooting methods - Just Measure it

Mass flow meter common troubleshooting methods

 

Phenomenon

Reason

Treatment Measures

Instantaneous flow rate with constant maximum value 1. The cable wire is disconnected or the sensor is damaged. 1. Replace the cable or replace
the sensor.
2. The fuse in the transmitter is burnt out 2. Replace the fuse.
3. Sensor measuring tube blockage 3. After unblocking, tap the sensor housing, and then measure the AC and DC voltage, still unsuccessful, the installation stress is too large, so reinstallation.
When the flow rate increases, the flow meter indicates a negative increase The sensor flow direction is opposite to the flow direction indicated by the housing, and the signal line is connected to the opposite direction. Change the installation direction and change the signal line wiring.
When the fluid flows, the flow rate shows positive and negative jumps, and the range of jumps is large and sometimes maintains a negative maximum value 1. Power supply AC/DC shield line grounding greater than 4Ω. 1. Re-grounding.
2. Pipeline vibration. 2. Change the connection pipe with the flowmeter to a metal hose connection.
3. The fluid has gas-liquid two-phase components. 3. Open a hole in the pipe above the flow meter and install a valve to discharge the gas phase components
4. There is a strong magnetic field or RF interference around the transmitter. 4. Change the environment around the transmitter.
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