Temperature transmitter and transmitter assembly with diagnostic element for diagnosing thermocouple short circuit

摘要

The temperature transmitter assembly (100) includes a thermocouple (106) and a temperature transmitter (102). The thermocouple (106) has a first conductor (116) and a second conductor (118) connected together at a junction (120). The temperature transmitter (102) determines the resistance of the thermocouple (106) and, based on the determined resistance, the first conductor (116) and the second conductor (118) before the junction (120). It has a diagnostic element that provides an indication of whether it is shorted together.