General Thermocouple Applications

Thermocouples are suitable for measuring over a large temperature range, up to 2300 °C. Applications include temperature measurement for kilns, gas turbine exhaust, diesel engines, other industrial processes, and fog machines.

They are less suitable for applications where smaller temperature differences need to be measured with high accuracy, for example, the range 0–100 °C with 0.1 °C accuracy. For such applications thermistors, silicon bandgap temperature sensors, and resistance thermometers are more suitable.

Fiberglass and Teflon insulated leads for industrial and commercial equipment. Lead lengths 6 to 360 in. (152 to 9,144 mm) and standard sheath lengths up to 12 inches. Available in J, K, T, and E calibrations available.

Watlow Thermocouples

Watlow is a world-class supplier of temperature measurement products, with more than 90 years of manufacturing, research, and design expertise. Companies engaged in critical process control of food and metals rely on Watlow thermocouples. Watlow designs and manufactures sensors to meet customers’ industrial and commercial equipment needs.

  • Watlow General Purpose Thermocouples Spec Sheet

Tempco Industrial Thermocouple Assemblies

Tempco Thermocouple

Tempco manufactures many styles of industrial thermocouple assemblies for a wide range of industries, from petro-chemical to textile applications, where one or more protection tubes may be necessary to protect the thermocouple.

  • Plastic Industry Tempco T/C spec sheet
  • Tempco Industrial Thermocouple spec sheet

Pyromation Thermocouples: Explosion-Proof

Explosion-Proof Thermocouple Assemblies with Thermowells are made for use in U.S. and Canadian hazardous areas. They are designed to extinguish flames inside the device, eliminating the potential for ignition of flammable mixtures in the surrounding atmosphere.

FM and CSA approved assemblies, dependent on connection head type, meet XP Class I, Division 1, Group A, B, C, and D; DIP Class II, Division I, Groups E, F, G and Class III, Division 1. The required thermowell is available in standard, heavy-duty, and flanged constructions.

  • Pyromation Explosion Proof Assembly spec sheet


  • Adjustable Spring bayonet
  • Adjustable Armor bayonet
  • Rigid Sheath
  • Rigid Sheath w/ threaded fitting
  • Rigid Sheath w/flange
  • Fixed length Bayonet
  • Insulated Wire
  • PFA Encapsulated
  • Ring Terminal
  • Nozzle Style
  • Pipe Clamp
  • Stainless Shim
  • Peel and Stick
  • Melt Bolt