Tube-Skin Weld-Pad Thermocouples

Tube-Skin Thermocouple Attachment Styles

Tube-skin assemblies are selected by attachment geometry, tube contact, lead protection, and heater environment so the sensor survives elevated-temperature surface service.

Tube-Skin Specification Drivers

Why Tube-Skin Temperature Matters

In fired heaters and reformer furnaces, tube metal temperature is the primary indicator of tube life. Exceeding the metallurgical limit of the tube alloy — even briefly — causes permanent creep damage. Tube-skin thermocouples provide the direct metal temperature measurement that fluid-immersion sensors cannot, enabling operators to manage heat flux and extend tube service life.

Redundant and Multi-Point Sensing

Tube-skin assemblies can be built with dual, duplex, or multipoint sensing when the heater, reformer, or coil monitoring plan needs redundant channels or more than one measurement point. For separate instrument channels, see duplex temperature sensor assemblies. For multiple sensing points along a process path, see multipoint thermocouples.

Installation Note

Tube-skin weld-pad assemblies are supplied for integration into the customer installation plan, with attachment style, pad geometry, sheath material, and lead protection selected around the heater or process coil environment.