Differential pressure sensor is one of the pressure sensor, the sensor for measuring the pressure difference on both ends of the sensor, the standard signal output. Differential pressure sensor and pressure sensor is different is that they generally have two interface pressure, differential pressure sensor is generally divided into positive pressure side and suction side, under normal circumstances, the positive pressure differential pressure sensor the pressure at the pressure should be greater than the negative pressure can be measured.

Differential pressure sensor with ordinary differential pressure sensor and the high static pressure differential pressure sensors, as its name implies using ordinary differential pressure sensor with low static pressure, general ordinary differential pressure sensor is diffused silicon chip, the maximum static pressure is 0.3 MPA, the differential pressure sensor using range is very limited, but its price is relatively cheap, high static pressure differential pressure sensor is generally used in capacitance chip, high static pressure sensors can be under the maximum working pressure for 32 MPA measuring differential pressure, due to work pressure and with 32 MPA pressure overload protection, to ensure that the sensor get reliable application in the high static pressure system. High static pressure differential pressure sensor, of course, the price is much higher than ordinary differential pressure sensor.

Pressure sensor as one of the most sensor in industrial application, differential pressure sensor and pressure sensor in a kind of important, so I can imagine that the application of differential pressure sensor is very broad, but the high price is quite expensive, static pressure differential pressure sensor is not suitable for large quantities of quantities on the industrial automatic application, and ordinary low static pressure and differential pressure sensor, application range is very narrow, so developed between the two cases of differential pressure sensor is very necessary.