Eurotherm Limited

Mark Colin Betts

An input module includes a terminal block defining a plurality of terminals. Each terminal includes an opening to receive an external wire. The electrical connector assembly is received by at least one terminal and includes an internal thermocouple and a pivot member. The internal thermocouple has a first leg and a second leg coupled together at a first end of the internal thermocouple and spaced apart to define a jaw connector at a second end. The pivot member is pivotable to couple the external wire to the first end. The input module includes a printed circuit board to be coupled to the electrical connector assembly via the jaw connector. The printed circuit board includes a processing circuit to perform cold junction compensation based on a temperature of the printed circuit board and a temperature or a voltage of the internal thermocouple.

Removable PCB terminal block cold junction compensation

An input module includes a terminal block and a removable printed circuit board (PCB). The terminal block includes first and second connector assemblies for electrically coupling first and second electrical wires of an external thermocouple to the PCB. At least one of the first or second connector assemblies includes an internal thermocouple. The internal thermocouple has two conductive legs which are formed of different materials and are separated at an end to form a jaw connector for connecting or disconnecting an edge of the printed circuit board to or from the terminal block respectively. The PCB includes a sensor for measuring a temperature on the PCB, and a processing circuit configured to perform cold junction compensation using a cold junction temperature which is determined based on temperature measurement from the sensor and a temperature or voltage measurement from the internal thermocouple, when measuring hot junction temperature of the external thermocouple.

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Hove, United Kingdom

Mark Colin Betts