Temperature transmitter composition

A temperature transmitter is a meter that converts a temperature variable into a standardized output signal that can be transmitted. Mainly used for measurement and control of industrial process temperature parameters.
A transmitter with a sensor usually consists of two parts: a sensor and a signal converter. The sensor is mainly a thermocouple or a thermal resistor; the signal converter is mainly composed of a measuring unit, a signal processing and a conversion unit (since the industrial thermal resistance and the thermocouple indexing table are standardized, the signal converter is also called as a stand-alone product Transmitter), some transmitters have added display units, and some have fieldbus functionality.

If the transmitter consists of two sensors for measuring the temperature difference, there is a given continuous function relationship between the output signal and the temperature difference. It is called a temperature transmitter.
There is a given continuous function relationship (usually a linear function) between the transmitter output signal and the temperature variable. The output signal of the earlier produced transmitter is linearly related to the resistance value (or voltage value) of the temperature sensor.
The standardized output signals are mainly DC signals of 0 mA to 10 mA and 4 mA to 20 mA (or 1 V to 5 V). Other standardized output signals with special regulations are not excluded.

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