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Selection of pressure gauge accuracy rating
- Dec 28, 2017 -

According to the national standard "general pressure gauge" (GB/T 1226-2010), the accuracy of normal pressure gauges is divided into 1.0, 1.6, 2.5 and 4.0. According to the national standard "precision pressure gauge" (GB/T 1227-2010, precision pressure gauges have the accuracy of 0.1, 0.16, 0.25 and 0.4). In the pressure gauge produced by our company, the precision of the pressure gauge with the surface diameter above 60mm is 1.0 and 1.6; The surface diameter is below 60mm (including 60mm) with a pressure gauge of 2.5. The diaphragm pressure gauge and diaphragm pressure gauge are generally 2.5. About precision, hysterisis error, tapping of error of displacement as well as the pointer deflection stability concept, introduced here: 


1. 1. In the measurement of error of range, error value should be greater than the permissible error given in table

1. 2. In the measurement range, the return error should not be greater than the absolute value of the allowable error specified in table 

1. 3. After tapping the displacement light, the value of the indicator shall not be greater than 1/2 of the absolute value of the allowable error specified in table    

1. 4. The deflection of the needle is stable in the measurement range, and the deflection of the needle should be stable, without jumping and sticking.