Cold-Junction Temperature Sensor Channel

The NI SCXI-1331 terminal block contains a cold-junction temperature sensor. This sensor connects to a special channel on the NI SCXI-1127/1128 that is dedicated to measuring the ambient temperature of the terminal block. This channel is used when measuring thermocouples and is always scanned as a 2-wire channel. You can include the cold-junction temperature sensor channel at any position in the scan list with any number of repetitions by indicating it with the name cjtemp.

For example, to scan the cold-junction temperature sensor and channels 3, 8, and 5 over the com0 bus, the scan list would be as follows:

cjtemp->com0;

ch3->com0;

ch8->com0;

ch5->com0;