Dual-diaphragm high-static-pressure differential pressure gauge
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The reading of the dual-diaphragm high-static-differential-pressure gauge is rising slowly. If process-related factors are ruled out, what could be causing this? No leakage points have been found; both the positive and negative pressure leads are correct. The balance valve in the three-valve assembly is open and set to zero, and when the positive and negative pressures are applied separately, the pressure readings change as expected. Measure the differential pressure across the pipeline filter.
There are generally two situations: ① If the reading is accurate, the value rises slowly; this may be due to the guide holes being small, and in such cases it is beneficial for the gauge as it reduces shocks. ② If the reading is inaccurate, it could be because the diaphragm is damaged or the internal mechanism and bearings are broken