1, after a period of use and pressure, the pressure gauge movement will inevitably appear some deformation and wear, pressure gauges will produce a variety of errors and failures.
In order to ensure the original accuracy and not to pass the distortion, should be replaced in time to ensure that the instructions are correct, safe and reliable. 2, the pressure gauge should be cleaned regularly.
Because the pressure gauge interior is not clean, it will increase the wear of the parts, thus affecting its normal work, serious will make the pressure gauge failure, scrap. 3, the pressure gauges installed at the pressure-measuring site, according to jjg52-1999, its verification cycle generally does not exceed six months.
Related to the production safety and environmental monitoring of the pressure gauges, the verification cycle must be in accordance with the verification procedures, only less than six months; if the mining conditions are bad, the verification cycle must be shorter.
4, the pressure at the site of medium fluctuations, frequent use, high accuracy requirements, as well as the requirements of safety factors stricter, according to the specific circumstances will be appropriate to shorten the verification cycle.
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