Due to the use of pressure gauges, working conditions and the environment vary, the pressure gauge can be classified according to the following aspects.
(1) according to the different elastic components can be divided into:
a.C-shaped spring tube pressure gauge:
b. Coil spring tube pressure gauge:
c.diaphragm pressure gauge
d. Bellows pressure gauge.
(2) By instrument usage can be divided into:
a. General purpose pressure gauges such as general pressure gauge, oxygen pressure gauge, ammonia pressure gauge, electric contact pressure gauge;
b. Special purpose pressure gauge such as diaphragm pressure gauge, anti-corrosion pressure gauge, shock pressure gauge, diaphragm pressure gauge.
(3) According to the size of the measured pressure can be divided into:
a. Micro pressure gauge measuring range 10000Pa look;
b. Low pressure gauge measuring range: 10 - 600KPa;
c. Medium pressure gauge measuring range: 0.6--10MPa;
d. High pressure gauge measuring range: 10 - 600MPa;
e. EHV measuring range: more than 600MPa.
According to the accuracy of the instrument can be divided into:
a. General pressure gauge - accuracy of 1, 1.6, 2.5, 4.
b. Precision Pressure Gauge - accuracy of 0.1, 0.16, 0.25, 0.4.
(5) According to the instrument installation can be divided into different ways:
a. Thread connection
b. Disk pressure gauge;
c. Flange connection
d. Clip-on connection.
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