temperature transmitter for thermocouple and thermal resistance is on-the-spot installed temperature transmitter unit in match with industrial thermocouple, thermal resistance among DDZ series of instruments. With adoption of 2-wire system for transmission (two pieces of wire are used as public transmission wire for power input and signal output), it transforms signal of industrial thermocouple, thermal resistance into output signal of 4-20mA, 0-10mA in linear relation with input signal or temperature signal.