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Bracket Installation Absolute Pressure Transmitter (DAP)

Oct 13, 2017

 Bracket Installation Absolute Pressure Transmitter (DAP)


Chart 3 Differential Gauge Pressure Transmitter(DGP)/Differential Absolute Pressure Transmitter(DAP)

Differential pressure transmitter includes two functional units:

Main unit

Auxiliary unit

Main unit includes sensor and process connection, working principle as followed:

The sensor module uses whole welded technology, in which has a pressure sensor and a temperature sensor. The 

pressure sensor is used for gauge or absolute pressure measurement. The temperature is taken as a reference for 

temperature compensation. The measured end of pressure sensor is connected to working chamber of sensor capsule; 

the negative end is connected to reference chamber of sensor capsule and open to air. In such way, the pressure 

difference is transmitted to silicon die of pressure sensor, which makes the resistor of sensor die change. So the 

detection system outputs different voltage. The output voltage is in proportion to the pressure variation, and then 

it is transmitted to standard output by adapter and amplifier.