What are the level and type of precision pressure gauge?

Precision pressure gauge refers to the high precision pressure gauge pointer type, generally is direct reading type. Precision pressure gauge with different levels of accuracy in addition to allow different basic error, and readout resolution of differences. For example: China precision pressure gauge 0 specified in the national standard. 4 grade 1. 6 mpa precision pressure gauge, its dial gauge scribed line is 160 points, 0. 25 level 1. 6 mpa precision pressure gauge, its dial gauge scribed line is 320 points. Obviously, dense points of dial engraved line must has the high accuracy of reading, and can reduce parallax precision pressure gauge readings. In order to ensure the accuracy of reading of precision pressure gauge, is on the dial of precision pressure gauge is to improve the accuracy of reading mirror ring, to correct reading position, improve precision pressure gauge reading accuracy. Precision calibration general pressure gauge and pressure gauge is mainly used for precise measurement of medium pressure, precision pressure gauge can be used to other pressure measurement instrument and parameter of a certain functional relation with stress instrument calibration or verification of other classes. The types of precision gauges on the market at present: 1, the pointer precision pressure gauge. 2, digital display precision pressure gauge, precision pressure gauge pressure gauge pointer type of precision grade are: 0. Level 4; 0. 25 level; 0. 16 level; 0. Level 1. Precision pressure gauge measuring range is divided into: 0 ~ 0. 04MPa； 0 ~ 0. 06MPa； 0 ~ 0. 1MPa； 0 ~ 0. 16MPa； 0 ~ 0. 25 mpa; 0 ~ 0. 4MPa； 0 ~ 0. 6MPa； 0～1MPa； 0 to 1. 6MPa； 0 ~ 2. 5MPa； 0～4MPa； 0～6MPa； 0～10MPa； 0～16MPa； 0～25MPa； 0～40MPa； 0～60MPa； 0～80MPa； 0～100MPa 。 - 0. 1～0MPa； - 0. 1 ~ 0 ~ 0. 15MPa； - 0. 1 ~ 0 ~ 1. 5MPa； - - - - - - 0. 1 ~ 0 ~ 2. 4 mpa: second, the level of digital display precision pressure gauge precision of 0. , 0 05 level. Level 1, 0. 25, 0. Level 5 figures show has two kinds: the five four digital display and digital display range: - 0. 1-100 mpa can be customized.