Ct-2:13.37

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Ct-2:13.37

1) A platinum RTD having a resistance Ro=1002 at a temperature To-0°C, a temperature
coefficient of resistivity of 0.00385 N°C, and a self-heating factor of 0.5°C/mw, is used
to measure a temperature that ranges from 0°C to 120°C. The RTD will be connected in a
Wheatstone bridge circuit, as shown below.
+V.
R(T)
Vo
R
Find the value of Ve such that the error produced by self-heating does not exceed 1.5°C
for the given temperature variation. Plot the output voltage vo of the Wheatstone bridge as
the temperature varies from 0°C to 120°C. Is the response linear?
Transcribed Image Text:1) A platinum RTD having a resistance Ro=1002 at a temperature To-0°C, a temperature coefficient of resistivity of 0.00385 N°C, and a self-heating factor of 0.5°C/mw, is used to measure a temperature that ranges from 0°C to 120°C. The RTD will be connected in a Wheatstone bridge circuit, as shown below. +V. R(T) Vo R Find the value of Ve such that the error produced by self-heating does not exceed 1.5°C for the given temperature variation. Plot the output voltage vo of the Wheatstone bridge as the temperature varies from 0°C to 120°C. Is the response linear?
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