A bridge circuit with an input voltage of 9 V and fixed resistors all with values of 200 2 contains a platinum RTD with a self-heating specification of 20 mW °C-l and a resistance of 340 2 at a temperature of 10°C. a) Calculate the self-heating error at a temperature of 25°C. b) What is the required gain to achieve an output voltage of 6 V at a temperature of 40°C? c) What is the static sensitivity of this platinum RTD at a temperature of 20°C?

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A bridge circuit with an input voltage of 9 V and fixed resistors all with values
of 200 2 contains a platinum RTD with a self-heating specification of 20 mW °C and a
resistance of 340 2 at a temperature of 10°C.
a) Calculate the self-heating error at a temperature of 25°C.
b) What is the required gain to achieve an output voltage of 6 V at a temperature of 40°C?
c) What is the static sensitivity of this platinum RTD at a temperature of 20°C?
Transcribed Image Text:A bridge circuit with an input voltage of 9 V and fixed resistors all with values of 200 2 contains a platinum RTD with a self-heating specification of 20 mW °C and a resistance of 340 2 at a temperature of 10°C. a) Calculate the self-heating error at a temperature of 25°C. b) What is the required gain to achieve an output voltage of 6 V at a temperature of 40°C? c) What is the static sensitivity of this platinum RTD at a temperature of 20°C?
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