Durex Industries Thermowell 1302H

Thermowells are manufactured from drilled bar stock and have threaded NPT process connections or flanges for direct immersion into high pressure or corrosive applications. The thermocouple element is mounted into the thermowell and is typically spring loaded for positive contact to the bottom wall of the well. This allows for the best possible response to temperature changes during operation.
Cast iron or aluminum screw cover heads are used to terminate the thermowell assemblies. The thermocouple element can be constructed of ceramic insulated thermocouple wires or mineral insulated cable for increase durability. The thermowell itself can be machined in a variety of designs and insertion lengths. Most wells are manufactured of 304 stainless steel or 316 stainless steel, however other alloys are available.

Resistance Temperature Detectors (RTDs) with thermowells are typically used in pressurized or harsh industrial process applications that require the benefits of RTD temperature measurement but require additional protection from the working environment.
The thermowells are manufactured from drilled bar stock and can be designed with a variety of lengths and NPT thread or flange sizes. The resistance temperature detector element is spring loaded into the thermowell for positive contact and rapid temperature response.
Cast iron or aluminum screw cover heads are used to terminate these assemblies. The element construction can be built to withstand temperature ranges up to 1200°F. as well as additional features to prevent premature failure due to excessive shock or vibration.