Thermocouples | Temperature Sensors

A thermocouple consists of two wires of dissimilar metals welded together into a junction. At the other end of the signal wires, usually as part of the input instrument, is another junction called the reference junction. Heating the sensing junction generates a thermoelectric potential (emf) proportional to the temperature difference between the two junctions. This millivolt-level emf indicates the temperature at the sensing tip. Southern Heat offers several types of Extruder Thermocouples.

Browse through our products below or Contact Us to discuss your project.

Thermocouple Survey Checklist – PDF

 

Adj Thermocouple

Adjustable Depth Thermocouples

These Adjustable Depth Thermocouples come standard with a tube diameter of 3/16″ and a tip dimension equal to 3/8″. The constructions consist of grounded 20 gauge Type J stranded armor cable or stainless steel over-braid. These thermocouples are used for applications up to 900°F (482°C) and are used with bayonet adapters.

 

Fixed Thermocouple

Fixed Depth Thermocouples

Fixed Depth Thermocouples are made to fit a specific depth in a straight, 45 degree, or 90 degree bend probe with a standard length spring, cap, and required insertion length.

  • “A” Dimension is 3/8″ Standard
  • 3/16″ Diameter Tube Standard
  • 2 Wire Platinum 100 ohms, .00385 curve at 0° C
  • 20 Gauge Stranded Wire
  • Available with Split Leads or Polarized Male Plug
  • Various sizes and calibrations available

Ring Lug Thermocouple

Ring Lug Thermocouples

Ring Lug Thermocouples mount on a surface using an existing screw or bolt to measure surface temperature. The T/C wire junction is crimped to the ring lug.

  • 20 Gauge Stranded Wire with Stainless Steel Over-Braid
  • Type J Standard, Other calibrations available
  • Stocked with Split Leads or Polarized Male Plug
  • Various sizes available

Hose Clamp Thermocouple

Hose Clamp Thermocouples

Hose Clamp Thermocouples are convenient in measuring pipe and cylinder temperatures.

  • 20 Gauge Stranded Wire with Stainless Steel Over-Braid
  • Type J Standard, Other calibrations available
  • Stocked with Split Leads or Polarized Male Plug
  • Various sizes available

Melt Bolt Thermocouple

Melt Bolt Thermocouples

Armor Cable
  • Wire Build – Fiberglass Insulated Wire in a rigid Stainless Steel Probe
  • Tube – Flexible Armor Cable
  • 4″ Armor Cable standard
  • Body Material – 304S.S. with 1/2-20 UNF
  • Pressure – 20,000 psi
  • Grounded
MgO 
  • Wire Build – MgO Insulated Wire in a full Length, Rigid Stainless Steel Probe
  • Tube – Flexible Armor Cable
  • 2″ Mgo Standard
  • Body Material – 304S.S. with 1/2-20 UNF
  • Pressure – 20,000 psi
  • Grounded
Adjustable
  • Thermocouple – Type J Standard
  • Type – Grounded Junction
  • Body Material – 304 S.S with 1/2-20 UNF Threads
  • Grounded

Magnetic Thermocouple

Magnetic Thermocouples

Magnetic Thermocouples can be attached to magnetic surfaces and walls.

  • 12 lbs. of pulling magnetic force
  • Type J
  • 20 Gauge Stranded Metal Braid
  • 3″ Split Leads and 1/2″ Bare Ends

MGO Thermocouple

MGO Thermocouples

Type J

  • Iron/Constantan Construction
  • 316 Stainless Steel Sheath
  • Grounded

Type K

  • Chromel/Alumel Construction
  • 316 Stainless Steel Sheath
  • Grounded

Industrial Thermocouple

Industrial Thermocouples

  • NPT Fittings
  • Compression Fittings
  • Assortment of Protection Heads
  • Thermowell Assemblies
  • Ceramic Tube Assemblies
  • Explosion Proof Heads