A platinum resistance thermometer (PRT) is a transducer which measures temperature 0 by means of consequent change of electrical resistance RT between its wo terminals. Such a PRT has the following quadratic characteristic: RT=Ro [1+A0+B0^2] The PRT is calibrated so that its resistance is Ro = 100 Q at a reference temperature of 0 = 0°C. The coefficients have the following values: A = +4.0 x 10-3 oc-1 3 = -5.0 x 10-6 °c-2 Determine sensitivity of this transducer at temperatures of +50 °C. Select one: O a. 0.45 Q/°C O b. -0.45 Q/°C Oc. -0.35 Ω/C Ο d. 0.4 Ω0C O . 0.35 0/°C
A platinum resistance thermometer (PRT) is a transducer which measures temperature 0 by means of consequent change of electrical resistance RT between its wo terminals. Such a PRT has the following quadratic characteristic: RT=Ro [1+A0+B0^2] The PRT is calibrated so that its resistance is Ro = 100 Q at a reference temperature of 0 = 0°C. The coefficients have the following values: A = +4.0 x 10-3 oc-1 3 = -5.0 x 10-6 °c-2 Determine sensitivity of this transducer at temperatures of +50 °C. Select one: O a. 0.45 Q/°C O b. -0.45 Q/°C Oc. -0.35 Ω/C Ο d. 0.4 Ω0C O . 0.35 0/°C
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