Pressure gauge range selection

1, in order to ensure that the elastic components of the pressure gauge can work reliably within the safe range of elastic deformation, the selection of pressure gauge range should not only be based on the size of the pressure to be measured, but also the speed of change of the pressure to be measured, the range of which should be left Enough room. When using a pressure gauge to measure steady pressure, the maximum working pressure should not exceed 2/3 of the span;

Vacuum pressure gauge

Vacuum gauges: Vacuum gauges are used to measure the pressure or negative pressure of non-crystalline, non-solidified liquids, gases or steam media that are non-corrosive to steel, copper and copper alloys and that are not explosive. Anti-vibration vacuum gauge table for vibration and pressure fluctuations, the measurement of non-corrosive, non-crystalline media negative pressure. Electric contact pressure vacuum gauge and electric contact vacuum gauge is used for the measurement of (pressure) and negative pressure of non-corrosive effect of copper and copper alloy without explosion, non-crystalline, non-solidified liquid, gas and the like when the pressure reaches the predetermined Value, with the help of contact devices, can be connected to or disconnected from the control circuit, while sending electrical signals.

Capsule pressure gauge

Membrane pressure gauge: Membrane sensor consists of two connected together a circular wave of the composition of the membrane. The pressure of the measuring medium acts on the inside of the capsule chamber and the resulting deformation can be used to indirectly measure the pressure of the medium. The size of the pressure value is shown by the pointer. Capsule pressure gauges are generally used to measure the pressure of gas, and can measure micro-pressure, over-voltage protection is also possible to some extent. When several capsule sensor elements are stacked together, a large transmission force is generated to measure very small pressure.

Pressure gauge using the function and the signal indicator

Pressure gauge according to their use of function points: Pressure gauge according to their use of different functions can be divided into local-type pressure gauge and charged signal control type pressure gauge.
General pressure gauges, vacuum gauges, pressure gauges, stainless steel pressure gauges are all local pressure gauge, in addition to indicating no pressure outside the control functions.
Live signal control pressure gauge output signal are:
1, the switch signal (such as electrical contact pressure gauge)
2, resistance signal (such as resistance remote pressure gauge)
3, the current signal (such as inductive pressure transmitter, remote pressure gauge, pressure transmitter, etc.)

Various types of manometer measurement accuracy and measurement standards

Pressure gauge according to their measurement accuracy: can be divided into precision pressure gauge, general pressure gauge. Accuracy of precision pressure gauges were 0.1,0.16,0.25,0.4 class 0.05 level; general pressure gauges of the measurement accuracy grade 1.0,1.6,2.5,4. 0 level.
Gauge according to their measurement standards: Gauge pressure gauge according to their different instructions, divided into general pressure gauge, absolute pressure gauge stainless steel pressure gauge, differential pressure gauge. General pressure gauge to atmospheric pressure as a benchmark; absolute pressure gauge absolute zero as a benchmark; differential pressure gauge to measure the difference between the two measured pressure.
Pressure gauge according to their measuring range: divided into vacuum gauge, pressure vacuum gauge, micro pressure gauge, low pressure gauge, pressure gauge and high pressure gauge. Vacuum gauge is used to measure pressure values less than atmospheric pressure; pressure vacuum gauge is used to measure pressure values less than and greater than atmospheric pressure; micro-pressure gauge is used to measure pressure values less than 60,000 Pa; low pressure gauge is used to measure pressure values 0-6 MPa ; Pressure gauge used to measure the pressure value of 10 ~ 60MPa;