Indicator or simulator conversion is compared with temperature-emf or
temperature-resistance reference tables. Reference tables for standard
thermocouple types are referred to a reference junction temperature of 0oC,
usually referred to as the cold junction temperature. Indicators and simulators
are often equipped with cold junction compensation (CJC) in order to take
account of this. A reference cold junction and thermocouple wires are used, in
addition to electrical instrumentation, to calibrate indicators or simulators
equipped with a CJC feature.