CJC Method Significantly Improves Thermocouple Accuracy
April 25, 2014
The MAQ20 thermocouple modules employ an advanced method of cold junction compensation (CJC) to significantly boost accuracy over comparable units. The MAQ20-JTC, -KTC, -TTC, and -RSTC thermocouple-input modules have eight differential input channels, grouped into four blocks of two channels. Each block has a terminal for sensor shield ground as well as an ambient temperature sensor. Operating temperature range is -40°C to +85°C. CJC specs include ±0.25°C typical accuracy at 25°C ambient and ±1.0°C typical accuracy over -40°C to +85°C ambient.
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