How to do a good job of maintenance and check the pressure gauge

Often use instrument knows, is to the life extension, maintenance and inspection of instrument is very important, sensitive to keep the pressure gauge is correct, in addition to the reasonable selection and correct installation, in the process of boiler, pressure vessel operation should also strengthen the maintenance and inspection of pressure gauge. Manipulation of the staff to gauge maintenance should do the following work: ( 1) Pressure gauges should be kept clean, glass on the dial should be bright and clear, make the dial pointer within the indicating pressure value can be easy to see clearly, dial to shatter or dial scale fuzzy pressure gauge should stop to use. （ 2) Pressure gauge of the connecting pipe to purge regularly, in order to avoid congestion. Especially for more oil or other viscous material gas pressure gauge connection pipe, more often should purge. （ 3) To check the rotation of the gauge and the volatility is normal, check whether the cock on the connecting pipe in the full open position. （ 4) Pressure gauge must be check regularly, at least every year by qualified units check one more time. After checking should be fill in calibration records and certificate and seal. Has more than check deadline pressure gauge should stop using it. In the process of normal operation of boiler, pressure vessel, if discover gauge indicates abnormal or have other suspicious signs, should immediately check the correction.