PXI-2503 Cold-Junction Temperature Sensor Channel

The module has a dedicated temperature sensor channel useful for cold-junction compensation when switching thermocouples.

The NI TB-2605 and TBX-68S terminal blocks both have onboard temperature sensors that connect to the dedicated cold-junction sensor channel.

You can access the cold-junction sensor channel by connecting to channel cjtemp in the following topologies:

  • 2-wire 24×1 multiplexer
  • 2-wire dual 12×1 multiplexer
  • 2-wire quad 6×1 multiplexer