|
|
Accuracy rating of pressure gauge
Release time:
2015/9/12 14:21:02 |
|
1, the accuracy of the pressure gauge is reflected by the test table and precision table to carry on, indicating the value and the true value of the accuracy of the close. It equals to the absolute value of the maximum basic error and the percentage of the upper bound of the measurement, which is determined by the size of the error.
2, China general industrial pressure gauge is divided into 4 accuracy levels, consistent with the JJG52-1999 "spring tube type general pressure gauge, pressure gauge and vacuum gauge" verification regulation of the pressure gauge to develop the allowable error. These 4 accuracy levels are: 1, 1.6, 2.5, 4. Allowable error (the percentage of the measurement limit) was 1%, 1.6%, 2.5%, 4%.
3, China 2005 new digital pressure gauge verification regulations promulgated and implemented, in accordance with the JJG875-2005 "digital pressure gauge verification regulations". The accuracy of pressure was 0.01%, 0.02%, 0.05%, 0.1%, 0.2%, 0.5%, 1%,,,, respectively
4, a reasonable choice of the accuracy level of the pressure gauge method, should be based on the production process, economic utility, testing method and other requirements, according to the minimum value of the measured pressure to allow the error to select the accuracy level. |
|
