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A J-type thermocouple has an output voltage Vθ = (13650 + 50 θx) μV, where θx is the junction temperature in Celsius (°C). The thermocouple is used with reference junction compensation, as shown in the figure. The Instrumentation amplifier used has a gain G = 20. If θRef is 1 °C, for an input θx of 100 °C, the output Vo of the instrumentation amplifier in millivolt is

A J-type thermocouple has an output voltage Vθ = (13650 + 50 θx) μV, where θx is the junction temperature in Celsius (°C). The thermocouple is used with reference junction compensation, as shown in the figure. The Instrumentation amplifier used has a gain G = 20. If θRef is 1 °C, for an input θx of 100 °C, the output Vo of the instrumentation amplifier in millivolt is Correct Answer 99 mV

Concept:- Thermocouple

* The basic principle of temperature measurement by thermo-electricity was discovered by seebeck in 1821.

= G

Vθref (1° C) = μv = 13700 μv

Vθx (100° C) = μv = 18650 μv

V0 = 20μv

V0 = 99 mV

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