The gas pressure sensor is mainly used to measure the absolute pressure of the gas conversion device, which can be used for the pressure measurement of blood pressure, wind pressure, pipeline gas, etc. Its performance is stable and reliable, and it is mainly suitable for physical experiments related to gas pressure, such as gas laws. It can also measure dry, non-corrosive gas pressure in biological and chemical experiments.
Characteristics of gas pressure sensors
1) Process connection part: can be expanded to flange connection, quick interface connection, capillary connection, etc.
2), electrical connection part: can be connected to the secondary on-site display instrument, waterproof and sealed connection, etc.
3) Temperature characteristics of medium: -20～85℃, -20～150℃, -20～200℃, -20～300℃
4), output signal characteristics: 0～20ma, 1～5vdc, 0～2vdc, voltage proportional output, rs485 digital signal
Working principle of gas pressure sensor:
Air pressure directly affects the deformation of the spring and the pressure of the spring on the base, which is an inertia value. If the varistor is installed between the spring and the base, the resistance will change the resistance according to the spring's deformation and elasticity, and the spring's elasticity is affected by the air pressure. So the size of the varistor is the ratio of the air pressure.
Gas pressure sensors are used in hydraulic and pneumatic control systems; petrochemicals, environmental protection, air compression; power station operation inspections, locomotive braking systems; thermal power units; light industry, mechanical metallurgy; building automation, constant pressure water supply systems; other automation and detection systems ; Industrial process detection and control; laboratory pressure calibration, etc.