Instrumentation cables and thermocouple cables are the same things. These cables are used to link thermocouples to control and measurement instruments (pyrometers, for example) that may be located in separate control rooms. The thermoelectric characteristics of the conductors utilized in these cables are identical to those of the thermocouples used for temperature sensing. Thermocouple extension and compensating cables are normally designed and produced in accordance with BS EN 50288 (previously BS 5308), EIL 6-52-45, ANSI MC 96.1, IEC 60584, IS 8784, and generally in accordance with IS 1554-1, IS 7098, and IEC 60502-1.