TCAV-L Averaging Soil Thermocouple Probe

The TCAV uses type E thermocouples, which are comprised of a chromel wire and a constantan wire joined at a measurement junction. A voltage potential is generated when the measurement end of the thermocouple is at a different temperature than the reference end of the thermocouple. The magnitude of the voltage potential is related to the temperature difference. Therefore, temperature can be determined by measuring the differences in potential created at the junction of the two wires. 

A reference temperature measurement is required for thermocouple measurements. The temperature sensor built into many of our data loggers’ wiring panel typically provides this measurement.