Pressure gauge according to its measurement accuracy: can be divided into precision pressure gauges, general pressure gauges. Precision pressure gauges are measured in 0.1, 0.16, 0.25, 0.4 level 0.05, and the general pressure gauges are measured in 1.0, 1.6, 2.5, 4.0, respectively.
The pressure gauge according to its measuring datum: the pressure gauge according to its indication pressure the base difference, divides into the general pressure gauge, the absolute pressure gauge stainless steel pressure gauge, the differential pressure gauge.
The general pressure gauge is based on atmospheric pressure, absolute pressure 0-bit as the benchmark, and differential pressure gauge to measure the difference of two measured pressure. Pressure gauge According to its measuring range: divided into vacuum gauge, pressure vacuum gauge, micro pressure gauge, low pressure gauge, medium pressure gauge and high pressure meter.
Vacuum gauges are used to measure pressure values less than atmospheric pressure, pressure gauges are used to measure pressure values less than and greater than atmospheric pressure, and micro-pressure gauges are used to measure pressure values less than 60000 PA, low-voltage gauges for measuring 0~6mpa pressure values, and medium pressure gauges for measuring 10~60mpa pressure values;
The pressure gauge according to its display way: Divides into the pointer pressure gauge, the digital pressure gauge.
Pressure gauges According to their use function: pressure gauges According to their use of different functions can be divided into the local indicator pressure gauge and with an electrical signal control type pressure gauge.
General pressure gauges, vacuum pressure gauges, earthquake-resistant pressure gauges, stainless steel pressure gauges are in-situ indicator pressure gauges, in addition to the indication of pressure outside the control function.
The output signal of the pressure gauge with signal control is mainly:
1, switching signal (such as electrical contact pressure gauge)
2, resistance signal (such as resistance Remote pressure gauge)
3, current signal (such as inductive pressure transmitter, remote pressure gauge, pressure transmitter, etc.)
Pressure gauges According to the characteristics of the measurement medium can be divided into:
1, general pressure gauge: general pressure gauge for measuring non-explosive, amorphous, non-solidification of copper and copper alloy without corrosion of liquid, gas or steam pressure;
2, corrosion-resistant pressure gauges: corrosion-resistant pressure gauges for measuring the pressure of corrosive media, commonly used stainless steel pressure gauges, diaphragm-type pressure gauges;
3, explosion-proof pressure gauges: explosion-proof pressure gauges used in the environment with explosive mixtures of dangerous places, such as explosion-proof electrical contact pressure gauges, explosion-proof transmitters and so on.
4, special type pressure gauge.
According to the use of pressure gauges: can be divided into ordinary pressure gauges, ammonia pressure gauges, oxygen pressure gauges, electrical contact pressure gauges, remote pressure gauges, vibration-resistant pressure gauges, with the test pointer pressure gauge, double-needle double or double-needle single-tube pressure gauge, digital display pressure gauge, precision pressure gauge and so on.
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