Pressure gauge change cycle

Pressure gauge inspection belongs to the category of the safety valve testing.
In accordance with the rules of the safety relief valve technology: relief valve check regularly, generally at least once a year, have corresponding safety technical specifications from its provisions;
When meet the following basic conditions, calibration cycle can be appropriately extended, put together in accordance with the regulations of the corresponding safety technical specification 1 have a clear record, that is used by reliable protection equipment safety valve;
2 be protected equipment operation process conditions of stability;
3 safety valve internal parts materials not corrode;
4 safety valve online inspection and online testing all conform to the requirements of the use;
5 have perfect contingency plans.
If meet the above conditions can apply for an extension, parking equipment can check on the calibration device.