26. a. A certain type of temperature transducer, designed to consists of a thermistor. The thermistor has a nominal resistance of 14092 and forms one arm c pridge circuit, with the other three arms each having a resistance of 14022. The bridge output is m by an instrument whose input impedance can be assumed infinite. If, in order to limit heating effe maximum permissible gauge current is 40 mA, calculate the maximum permissible bridge exc woltage. If the sensitivity of the thermistor is 340m2/C° and the maximum bridge excitation volu sed, calculate the bridge output voltage when measuring a pressure of 50 degree Celsius.

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Q6. a. A certain type of temperature transducer, designed to measure temperatures in the range 0-100C°,
consists of a thermistor. The thermistor has a nominal resistance of 1400 and forms one arm of a DC
bridge circuit, with the other three arms each having a resistance of 14022. The bridge output is measured
by an instrument whose input impedance can be assumed infinite. If, in order to limit heating effects, the
maximum permissible gauge current is 40 mA, calculate the maximum permissible bridge excitation
voltage. If the sensitivity of the thermistor is 340m2/C° and the maximum bridge excitation voltage is
used, calculate the bridge output voltage when measuring a pressure of 50 degree Celsius.
Transcribed Image Text:Q6. a. A certain type of temperature transducer, designed to measure temperatures in the range 0-100C°, consists of a thermistor. The thermistor has a nominal resistance of 1400 and forms one arm of a DC bridge circuit, with the other three arms each having a resistance of 14022. The bridge output is measured by an instrument whose input impedance can be assumed infinite. If, in order to limit heating effects, the maximum permissible gauge current is 40 mA, calculate the maximum permissible bridge excitation voltage. If the sensitivity of the thermistor is 340m2/C° and the maximum bridge excitation voltage is used, calculate the bridge output voltage when measuring a pressure of 50 degree Celsius.
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