The working principle of temperature transmitter?

Adopted thermocouple temperature transmitter, thermal resistance as temperature measuring element, from a temperature measuring element output signal to a transmitter module, after filtering, arithmetic amplifier, nonlinear correction, V/I conversion, constant current and reverse protection circuit processing, convert and a linear relationship with temperature of 0 to 4 ~ 20 ma current signal 5 v / 0 - 10 v voltage signal, RS485 digital signal output. Integrated thermal resistance temperature transmitter is relatively small volume, can be installed to the thermal resistance temperature transmitter in the junction box. Integrated temperature transmitter by temperature measuring probe (commonly The thermocouple or heat resistance sensor) And the two wire system solid electronic units. In the form of solid module temperature measuring probe directly installed on the terminal box, thus forming the integration of the transducer. Integrated temperature transmitter with thermal resistance and thermocouple generally fall into two types.

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