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Hot Junction Style Thermocouples

Since day one, Pyro Service has delivered high quality, reliable thermocouples. Still, we continue to stock a multitude of bare and insulated thermocouple wires in several gages as well as various sheath protected mineral insulated thermocouple materials in several calibration and various diameters. With numerous styles and calibrations on hand we are capable of responding to your emergency needs swiftly. As anestablished leader in the field of temperature measurement, Pyro Service continues to develop with the demands of an evolving industry, reacting with advances in purity and stability of raw materials in order to deliver the highest quality product.

All of Pyro Services thermocouples are manufactured in house.Please give us a call with any questions regarding your current or a desired replacement thermocouple.

Hot Junction Style Thermocouples

  • Ungrounded Junction:Thermocouple junction is fully insulated from the welded sheath end. The ungrounded junction is excellent for applications where stray EMF’s would affect accurate reading.The wire is protected from corrosive or erosive conditions. Response time is longer than with grounded junction.
    • Dual Isolated Junction: Two separate thermocouples are encased in a single sheath. The isolation prevents ground loop errors if wired to separate instruments.
  • Grounded Junction:The sheath and conductors are welded together, forming a completely sealed, integral junction. The grounded junction is recommended in the presence of liquids, moisture, gas or high pressure. The wire is protected from corrosive or erosive conditions. Response time with this style approaches that of the exposed junction.
    • Dual Isolated Junction: Two separate thermocouples are encased in a single sheath. The isolation prevents ground loop errors if wired to separate instruments.
  • Exposed Junction: Thermocouple junction is exposed and butt welded, insulated and sealed against liquid or gas penetration. This junction style provides the fastest possible response time but leaves the thermocouple wires unprotected against corrosive or mechanical damage. The quick response time makes exposed junctions favorable for rapid temperature cycling.