Tube skin thermocouples provide an efficient means of temperature measurement of tube walls in petrochemical plants and of boiler and super heater tubes in power plants. Made of metal sheath, MgO insulated thermocouple wire (CERAMO®) the runs can vary from just a few feet to over 50.

Shields may be added which curve around the pipe and over the junction and packed with a high temperature insulation to prevent heat from being transferred away from the junction thereby providing a more accurate temperature measurement.

Expansion loops or coils compensate for movement as the tubes are subject to thermal growth. Mounting clamps can be welded along the pipe for additional security.

Thermo Electric will fabricate tube skin thermocouples to the requirements based on your installation drawings.


Tube skin thermocouples are used for monitoring surface temperatures on boilers, super heater or heat exchanger tubes. They are available with a weld pad shaped to the curvature of the tube or knife edge for fast response. Termination available with lead wire or sealed head extensions. Thermo Electric will custom shape for expansion loops or coils and provide weld clamp and heat shield as required.

Process Connection:Welded
Calibration:J, K, T, E, N
Connection Heads:Aluminum, Stainless Steel, Cast Iron or Polypropylene
Head Certifications:NEMA-4, 4X, Explosion Proof FM, CSA, ATEX