Tempsens Instruments [I] Pvt Ltd offers Range of Thermowells. Tempsens Instruments [I] Pvt Ltd is ISO 9001: 2000, ISO 9002 certified that manufactures refractory and stainless steel protective sheathing to suit various applications. The Range of Thermowells includes metal Thermowells with tungsten carbide/ceramic, PTFE/PVDF/PFA coatings, solid sintered tungsten carbide, silicon carbide, platinum thimble, tantalum, titanium, nickel cladding and graphite Thermowells.