... . Our products conform to the standards of IEC584 -1and IEC-2. The EMF of Thermocouple wires inhabits excellent stability & ... measuring temperature from -270 C -----1800 0C conforming to IEC 584-1, IEC 581-2, ASTM E 230, American standard ANSI MC ... 96.1 K, KP, KN, KPX, KNX, KCB, KCA T, TP ... ± 2, 2º C or 0.75% Special tolerance ± 1, 1º C or 0, 4%