... :Pt-Rh Hight accuracy,rapid reaction,reliability,stability Immesion thermocouple(Type B,R,S and Wre)Thermocouple tip/head are used for ... metal temperatures. Thermocouple tip has two type.Type:QR-KW/S/R/B-602J Type:QR-KW/S/R/B-604J( The letter J stand ... . (4)High temperature limit,hight temperature:1800degrees celsius. Immersion thermocouple(type B,R,S and Wre)