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Pressure measurement system using AD7714

Published on Jan 05 2011 // Pressure Sensor Circuits

Pressure measurement system using AD7714.

Pressure measurement system by the AD7714 circuit as shown. BP01 is Sensym produced pressure sensors. Will be connected into a bridge circuit BP01 from OUT +, OUT-ended output differential voltage. A pressure sensor on the full scale rated pressure (in this case is 40kPa), its differential output voltage sensitivity 3mV / V. The use of a +5 V excitation voltage, the sensor full-scale output range is ± 15mV. The excitation voltage has been 24kO and 15kO resistor divider, in order to AD7714 provides 1.92V reference voltage, the excitation voltage fluctuations do not cause the system to measurement error.