Basic working principle of the electronic pressure switch

　　Electronic pressure switch mainly adopts the governor pressure sampling, through the pressure governor directly converts non-electricity - pressure can be directly measured power, voltage or current, then through the signal conditioning circuit for governor signal amplification and attribute processing, finally through comparing circuit, makes the device at set pressure on the threshold, output level is a logic, the logic level can be input to the microcontroller, drive circuit or electric control switch in the back. Can be set level switching threshold to determine the pressure value of the action of pressure switch, and can be dealt with by amplifying and under control after the electrical signals for real-time monitoring of pressure, trigger switch, air conditioning system, power control and electronic fan air conditioning compressor.

Pressure governor in electronic pressure switch is directly connected to measure the medium components, its stability has the following points;

(1) good linearity, high sensitivity, strong resolution, wide measuring range.

(2) the hysteresis and drift error is small, good repeatability, good interchangeability.

(3) dynamic performance is good.

(4) low consumption.

(5) good corrosion resistance, anti-aging, and strong anti-jamming capability.

(6) access convenient measurement, the receiving mode, easy to install, easy to adjust, easy to monitor.

(7) small volume, light weight, price moderate.

(8) low failure rate, easy calibration and maintenance.

　　Electronic pressure governor adopts control device is ceramic pressure sensor. Ceramic piezoresistive governor is refined by a special process of ceramic materials using dry ceramic piezoresistive pressure governor. Ceramic is a recognized high flexibility, corrosion resistance, wear resistance, resistance to impact and vibration of the material. Thermal stability properties of ceramics and its thick film resistor can make its working temperature range, up to 40 ~ 125 ℃, and has high precision, high stability of the measurement. Its electrical insulation strength > 2 kv, the output signal is strong, good long-term stability.

　　Through the above comparison, the performance of the use of the electronic switch than mechanical switch stability and environmental protection has a great progress