Thermon Heat Tracers Pvt. Ltd. Offers Skin Effect Heat Tracing System. Thermon Heat Tracers Pvt. Ltd is an ISO 9001 accredited company. The Company also manufactures various types of wires and cables. The Skin Effect Heat Tracing System, also known as ThermTrac ™, is ideal for temperature maintenance, freeze protection and heat-up applications. The Skin Effect Heat Tracing System generates heat in the "Heat Tube" by the return electrical current flowing through the impedance of the inner skin of the heat tube. There is no voltage or current on the outer skin of the heat tube. The Skin Effect Heat Tracing System has an insulated conductor which is either polyolefin-insulated tinned copper conductors or Fluoropolymer-insulated nickel plated copper conductors. This System has a Maximum Maintenance Temperature of 200 Degree C.