Pressure measurement system composed of the AD7714

Published:2011/7/7 3:39:00 Author:Christina | Keyword: Pressure, measurement system | From:SeekIC

The pressure measurement system which is composed of the AD7714 is as shown in the figure. The BP01 is designed as the pressure sensor which is produced by the Sensym company. You need to connect the BP01 into the bridge circuit, the OUT+ and OUT- ports output the differential voltage. If you add the rated full scale pressure on the pressure sensor, the sensitivity of the differential output voltage is 3mV/V. If you use the +5V excitation voltage, the full-scale output range of the sensor is ±15mV. This excitation voltage is divided by the 24kΩ and 15kΩ resistances to supply the 1.92V benchmark voltage for the AD7714, so the fluctuation of the excitation voltage will not cause the measurement error.



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