Thermowells

Manufactured from drilled bar stock, Watlow thermowells provide a pressure-tight connection at the point of installation. With thick walls, thermowells are sturdy enough to handle high pressure, high velocity and corrosive environments. They are frequently used in petrochemical and power plant applications. Highly critical or demanding applications may require thermowells not only for protection of the temperature sensor, but also to withstand high pressure or erosion or both, caused by material flows through vessels. Watlow offers numerous standard thermowell constructions, and special configurations can be designed on request.

Protecting Tubes

Both ceramic and metal (pipe type) protecting tubes serve the purpose of protecting the temperature sensor from harsh environments. Unlike thermowells, they are not primarily designed for pressure tight applications. Protection tubes are often used in heat treatment furnaces, ovens, open containers, flues and ducts. Construction styles of protecting tubes are more limited than thermowells, but the tubes offer the advantages of economy, corrosion resistance, and, in some cases, higher temperature capabilities.