... /604 ISO9001 Usage:With thermocouple lance connection THERMOCOUPLE CONNECTOR(Type S,R,B,Wre)It`s on the top of ... has two types are 602 plug and 604 plug. Thermocouple type: Type Model Max.TemperatureType WRe(W25%Re-W3%Re)QR-KW ... %Rh-Pt30%Rh)QR-KB-602/604 1800°c THERMOCOUPLE CONNECTOR(Type S,R,B,Wre)