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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A platinum resistance thermometer (PRT) is a transducer which measures temperature 0 by means of consequent change of electrical resistance RT between its
two terminals. Such a PRT has the following quadratic characteristic:
RT=Ro [1+A0+BO^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 °C-1
B = -5.0 x 10-6 oc-2
Determine sensitivity of this transducer at temperatures of +50 °C.
Select one:
O a.
0.45 Q/°C
Ob.
-0.45 Q/°C
-0.35 Ω/ΟC
d. 0.4 0/°C
O e. 0.35 Q/°C
O f. -0.4 0/PC
Transcribed Image Text:A platinum resistance thermometer (PRT) is a transducer which measures temperature 0 by means of consequent change of electrical resistance RT between its two terminals. Such a PRT has the following quadratic characteristic: RT=Ro [1+A0+BO^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 °C-1 B = -5.0 x 10-6 oc-2 Determine sensitivity of this transducer at temperatures of +50 °C. Select one: O a. 0.45 Q/°C Ob. -0.45 Q/°C -0.35 Ω/ΟC d. 0.4 0/°C O e. 0.35 Q/°C O f. -0.4 0/PC
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