A newly installed integrated temperature transmitter (supporting HART protocol) with no current output signal.

Fault inspection and analysis: There are four main causes of faults: unprogrammed temperature transformer, incorrect temperature transformer model, incorrect wiring, and mismatch between primary components and temperature transformer.

When checking the temperature change, the Pt100 primary component was connected in a four wire system and programmed at 0~100 ℃. However, the actual primary component was connected in a three wire system and the wiring was incorrect.