If the Rosemount transmitter is directly connected with a thermocouple or resistance temperature sensor, it may cause some problems at the input end of the host system of the instrument, thereby affecting the measurement effect of the transmitter. To solve this problem, we can add a temperature transmitter near the sensor.

Rosemount 644 temperature transmitter is divided into single-input 644H and dual-input 644S. The instrument introduces the wiring of the temperature transmitter in this article. Let's learn the precautions for the wiring of the Rosemount 644 temperature transmitter.