PFA Insulated & Screened Extension Cables. PFA insulated cable for extending Platinum Resistance Thermometers High temperature to 260 C, extruded PFA teflon construction Commonly used for Pt100 thermometers, also suitable with other types such as Pt130, Pt500 & Pt1000 4 & 6 core available – to extend 2, 3 or 4 wire RTD configurations, the 6 core can be used to extend Construction – PFA insulated 7/0.2mm tin plated copper conductors, twisted cores with nylon cord, tin plated copper braided screen with PFA insulated outer jacket Good mechanical strength and flexibility, resistant to oils, acids and other adverse fluids