MI-trace heaters consist of a single or two conductor series trace heater connected to mineral-insulated cold leads (with 2,0, 2,5, 3,3 or 5,0 mm² copper conductor) by means of a clean laser seal (splice). The outer sheath is made of high quality stainless steel 1.4541 (AISI 321). The free end of the cold lead is potted and fitted with a flexible lead (cross section matching that of the cold lead conductor) for power connection and a 1,5 mm² lead for earthing. A com-pression ring flameproof stainless steel gland 1.4404 (AISI 316L) threaded M20x1.5 or M25x1.5 is fitted at the end of each cold lead and prevented from possible loss by the potted end seal. MI trace heaters are supplied prefabricated by eltherm and ready for installation. Each unit comes with a type plate bearing all information / markings. Maximum maintain temperatures are derived from the maximum sheath temperature determined by eltherm and are also indicated on the type plate.

Technical Benefits

  • Purity: No foreign material
  • Full range of resistances
  • Fast assembly, low cost
  • 1 mile (1,6 km) on 1 circuit 
  • In by noon, out by 5
  • 100%  quality check
  • Safety: non-destructive tests
  • No filler holes. 
  • MgO = ASTM E1652. 
  • FM approved