A pressure measurement system consists of a monolithic piezoresistive pressure transducer and a bridge circuit to measure the resistance change of the transducer. The resistance (R) of the transducer...

A pressure measurement system consists of a monolithic piezoresistive pressure

transducer and a bridge circuit to measure the resistance change of the transducer.

The resistance (R) of the transducer is related to pressure (P) according to: R ¼ K1 P

and the output of the bridge circuit (V) is related to resistance (R) by: V ¼ K2 R.

Thus, the output voltage is related to pressure according to: V ¼ K1 K2 P. If the

maximum error in K1 is 2%, the maximum error in K2 is 1.5%, and the voltmeter

itself has a maximum measurement error of is 1%, what is the likely maximum

error in the pressure measurement?