... 2. Lead core:3/4/6 cores 3.CE/ ISO9001 Temperature probe- Threaded RTD Features1. Small external diameter, quick heat responsive period2 ... in narrow mounting pipeline or under bending conditionsWorking principleRTD measure temperature according to the characteristic of metal wire changes electrical resistance ... ,650,900,1150,1650,2150Taper protective tube225,250,300,400 Temperature probe- Threaded RTD