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Vortex Flowmeter Troubleshooting-2024.01.20
Vortex Flowmeter Troubleshooting-2024.01.20
Data: 2024-01-20 14:25

 

 

Fault 1: There is flow in the pipeline, but the sensor has no output or the intelligent flow totalizer does not display:
A. First make sure there is flow in the pipeline and it is greater than the lower limit of the sensor's measurable flow rate.
B. Check whether the internal wiring of the instrument is incorrect or broken: The method is to check the wiring or hit the pipe with a hammer or wooden stick, adjust the calculator to the display frequency, and see if there is a frequency display. If there is a display, the wiring is correct. If there is no frequency display, the circuit may be wrong and the circuit needs to be checked.
C. To judge whether the amplifier is good or bad: The method is to remove the probe wire from the amplification board and see if the sensor has output or if the intelligent flow totalizer has a 50HZ frequency display. If there is no output, you need to replace the amplification board. If there is output, It means the amplifier is normal.
D. Determine the quality of the sensor: The method is to remove the two leads of the sensor head from the amplification board, and use a multimeter to measure the resistance between the two leads of the sensor head and the resistance of the two leads of the sensor head to the shell. It should be greater than 2MΩ, otherwise the sensor head needs to be replaced.
E. If there is no problem with the sensor, check whether the pressure transmitter and platinum thermal resistor are damaged. First, check whether the pressure and temperature display on the calculator are correct. If there are no problems, it can be judged that the intelligent flow calculator is damaged.


Fault 2: There is no flow in the pipeline, but the sensor has output or the intelligent flow totalizer displays:
A. Check whether the vibration of the sensor installation position is too large. If the vibration is too large, consider installing a vibration reduction bracket.
B. Poor grounding of the instrument causes interference.
C. Removed in small signal removal equipment.


Fault 3: The flow in the pipeline is normal, but the instrument shows that the flow swings too much:
A.Incorrect or improper installation
B. The trigger sensitivity or gain of the amplifier is improperly adjusted, and the DIP switch needs to be adjusted appropriately.

 

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