is current is produced or not in the thermocouples due to their junction temperature ???
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Generally, the voltage is in the microvolt range and care must be taken to obtain a usable measurement. Although very little current flows, power can be generated by a single thermocouple junction. Power generation using multiple thermocouples, as in a thermopile, is common.
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Temperature of water is sensed by a thermocouple that produces a direct-current (DC) milliVoltage output (Smoot and Blakey, 1966). A positive but nonlinear relation exists between the output voltage of the thermocouple and temperature. Thermocouples were the first type of temperature probe or sensor.
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