Base metal Thermocouples ( J, K, T, E, N type thermocouples)


Base Metal Thermocouples
Technical Details

High accurate Thermocouples for variety of application
J, K, T, E,
NElement size (MI)
1, 1.5, 3, 4.5, 6.8 (mm)
1.2, 1.6, 2, 2.5, 3.2 (mm)
Protection Sheath M
Seamless SS 316, SS 310, HRS 446,
INCONEL, Nickel, Hastalloy, Titanium, Ceramic, Silicon Carbide Monel etc.
Simplex / Duplex / Multipoints

Tempsens offers three basic types of base metal thermocouples:- insulated wire, bare and ceramic insulated elements and thermocouples with protection tubes.The base-metal thermocouple covers the majority of applications within industry over a range of V180XC to +1300XC.


Names of Materials

Application Range


Iron (+)
Constantan (-)
-40 to 750XC


Chromel (+)
Alumel (-)
-200 to 1200XC


Copper (+)
Constantan (-)
-200 to 350XC


Chromel (+)
Constant (-)
-200 to 900XC


Nicorsil (+)
Nisil (-)
-200 to 1200XC

Many variations of each type are available to meet your application needs. The bare wire and bead construction normally requires additional protection from the medium being measured. The mineral insulated system however can be used on its own, except in particularly severe conditions such as in aluminum or brass foundries.


* Insulated wire thermocouples are suitable for most general purpose applications.

* Bare and ceramic insulated elements, available in ASTM Types K and J, can be twisted or butt welded. Choices include straight or angle types, two- or four-hole insulators and single or dual element.

* Thermocouple with protection comes complete with head, block and protection tube. Several styles are available.


  • Metal processing such as aluminum, zinc, brass (with appropriate protection tube)
  • Chemical Industry
  • Petrochemical Industry
  • Industrial storage tanks