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1, differential pressure transmitter output is too low:
The main reason is that the positive pressure tube leaks or blocks, the differential pressure transmitter has a large measuring range, and the flow rate in the pipeline is too small. For general measuring fluids, leakage or blockage of the pressure guiding tube is impossible. The normal phenomenon of this phenomenon is the on-site measurement of gas or medium containing impurities. As long as we check the pressure guiding tube, remove the blockage, adjust the differential pressure transmitter. Range and adjust process flow.
2, the output pressure is too high:
This main reason is just the opposite of the above, we can refer to the above solution to eliminate one by one.
3, the output pressure instability, fluctuations:
The installation direction is not correct. The disturbance of the upstream and downstream valves and the influence of the elbow on other flow blockers have the greatest impact on the throttling elements. This requires us to adjust the process or change the installation site.
When the differential pressure flowmeter (differential pressure orifice flowmeter) is applied on the spot, it often encounters such problems. However, the reason is that if the installation is correct, the main problem is to appear twice. Meter differential pressure transmitter, the following mainly for everyone to introduce the main inspection when these problems arise.