Description

This is the thermocouple mux board for the Low Energy PIU. This board contains the reed relays which can switch up to 16 thermocouple inputs to the LEPIU CCFA. The LEPIU can linearize type J, K, T, S, E, and R thermocouples.

The relays on this mux board have a finite lifetime. As the relays approach their lifetime limit of cycles, the mux boards become less reliable. WPC has put a lot of effort into improving the reliability of these mux boards. All boards currently sold have ALL NEW RELAYS on board, eliminating the primary failure mechanism that we have observed for these thermocouple mux boards.

This relay board is used with Honeywell’s 51301880-100 or WPC’s 51301880-101 terminal board, which provides the cold junction reference.