Seismic pressure gauges can withstand severe environmental vibrations. In places with strong mechanical vibrations, such as oil drilling platforms and large compressor stations, ordinary pressure gauges may experience severe pointer shaking, inaccurate readings, or even damage due to vibration. However, seismic pressure gauges can still accurately measure pressure. Suitable for situations where the medium pressure fluctuates violently, such as in chemical production, the medium pressure in some reaction vessels may fluctuate frequently, which can effectively cope with such fluctuations and stably reflect pressure changes; Different measurement ranges can be selected according to different needs and usage scenarios to meet various pressure measurement requirements.

When the pressure of the measured medium acts on the sensitive element, the sensitive element will undergo elastic deformation, which is transmitted to the pointer through the transmission mechanism, causing the pointer to indicate the corresponding pressure value on the dial. Due to the damping fluid filled in the case, when subjected to external vibrations or medium pulsations, the damping fluid will absorb and disperse this energy, reducing interference with sensitive components and transmission mechanisms, thereby ensuring that the pointer can stably indicate the pressure value.

Measurement steps for seismic pressure gauge:

1. Appearance inspection: Check the integrity of the instrument, including whether the case, dial, hands, connecting parts, etc. are damaged or deformed; Check the clarity of the dial and whether the scale is accurate and complete.

2. Environmental condition confirmation: Ensure that the testing environment temperature, humidity, etc. meet the specified requirements. The general operating environment temperature is -40 ℃~70 ℃, and the relative humidity is not greater than 80. If the ambient temperature deviates from the normal operating temperature, additional temperature error should be included.

3. Selection of standard gauge: Select a standard gauge with a higher accuracy level than the seismic pressure gauge being tested. Generally, the error of the standard gauge should be less than 1/4 of the error of the tested gauge to ensure the accuracy of calibration.

4. Calibration of indication error: Perform voltage rise or fall calibration in sequence according to the numbered dividing lines. Gradually and uniformly increase the pressure from zero until the standard gauge pointer points to the corresponding dividing line, and then read the measured value. Then lightly tap the outer shell of the inspected meter, read it again, and record the indicated value and displacement after tapping (the difference between the indicated values before and after tapping). When the reading reaches the upper limit of measurement, close the pressure supply valve of the tested meter, cut off the pressure source, withstand the pressure for 3 minutes, and then perform pressure reduction verification point by point until zero. The return error and tapping displacement should meet the requirements specified in the verification regulations.

5. Seismic performance testing: Simulate the vibration environment under actual working conditions, conduct seismic performance testing, observe the stability and accuracy of its readings during the vibration process, and ensure that its seismic performance meets the requirements.

6. Result processing: Based on the calibration data, calculate parameters such as output error and return error to determine whether the seismic pressure gauge is qualified. If it is not qualified, it needs to be adjusted or repaired and retested.