A platinum resistance sensor has a resistance of 100 Ω at 0 °C and a temperature coefficient of resistance of 4 × 10−3 °C−1 . Given that a 15V supply is available, design a deflection bridge giving an output range of 0 to 100 mV for an input range of 0 to 100 °C:
(a) using the procedure summarised by eqns 9.7 and 9.8
(b) using the linear approximation of eqn [9.15]. Give values for all circuit components and assume a high impedance load.
(c) How should the circuit be altered if the input range is changed to 50 to 150 °C?
