This international standard establishes the requirements for simplex, Duplex and Triplex mineral-insulated metal-sheathed thermocouple cables and thermocouples, which are intended for use in general industrial applications. (Abbreviation MIMS for mineral-insulated metal-sheathed will be used hereafter). It covers only thermocouple cables and thermocouples with base-metal conductors, of Types T, J, E, K and N. The specifications in this standard apply to new thermocouple cables and thermocouple units as delivered to the user. They do not apply to the product after use. External seals, terminations, connections and other accessories are not within the scope of this standard This standard does not deal with precious metal thermocouple cables and thermocouples. The special requirements for nuclear primary loop applications are dealt with in the other standards.