WIKA Tubeskin Thermocouple Assembly (TC59-X)



  • Chemical industry
  • Superheated steam applications
  • Refineries
  • Heating furnaces and high-performance boilers
  • Heat exchangers

Special features

  • Removable thermocouple design
  • Patented moldable heat shield
  • Application ranges from 0 … 1,260 °C (32 … 2,300 °F)
  • Flexible sheathed cable, mineral-insulated internal leads
  • High mechanical strength, shock resistant

Sales Contact (Wika.sales@asyatrafo.com)




The XTRACTO-PAD® enables the measurement of a tube within a combustion furnace to be measured accurately. The XTRACTO-PAD® is a product developed by Gayesco International Inc. The expertise, knowledge and products of Gayesco are now part of the WIKA Group.

The XTRACTO-PAD® is a thermocouple design utilizing a guide channel and patented heat shield. A removable contoured thermocouple sensor made from mineral-insulated cable (sheathed cable) is installed in the guide channel and heat shield. It consists of a metal outer sheath, which contains the insulated internal leads, compressed within a high-density ceramic composition. The internal leads are made from thermo material. The material of the outer sheath can be selected to match the application. At one end of the sheathed cable, the internal leads are welded together to form an insulated (ungrounded) or non-insulated (grounded) measuring point.

This unique thermocouple design allows for weldable parts (guide channel, heat shield, and tube clips) to be installed by the manufacturer of the heater / boiler or even by the tube manufacturer in the case of specialty furnace tubes.

A patented shield is placed over the guide channel and sheathed cable. This shield is a key component for the XTRACTO-PAD®, providing accurate temperature measurement of the tube.

At one end of the sheathed cable, the ends of the leads are connected and the sheathed cable is hermetically sealed using a sealing compound. The lead ends form the platform for the electrical connection. Cables, plug-in connectors or connector sockets can be connected to them.

Sensor design
The XTRACTO-PAD® is designed as three primary components. The contoured thermocouple sensor, guide channel and the patented heat shield have been designed to suit each tube and sensor size.

By utilizing these engineered components the XTRACTO-PAD® design provides accurate measurement results along with the ability to remove the thermocouple.