WIKA

Thermowells / protection tubes

For each measuring point requirement the optimum thermowell / protection tube

Thermowells / protection tubes from WIKA are used with demanding operating conditions both in solid-machined versions from bar stock material and in fabricated versions with tubular design. The variants offered differ mainly in their designs; with flanges, threaded or for welding in. The connection of the thermowells / protection tubes by flange is universal and is used in many processes. The compact form of the threaded connection saves space and mounting is also very easy. If the process safety and robustness is important, the thermowells / protection tubes can be welded into the process directly. Furthermore, all connections for sanitary applications and also thermowells in solid-machined Vanstone design are available without weld seams. The selection of materials and the manufacturing of the thermowells / protection tubes in accordance with global standards or to customer specifications ensure optimal protection for the sensor.

FAQ
FAQ

Are there different ScrutonWell® designs for gaseous and liquid media required?

No, the design of the ScrutonWell® can be used in gaseous and liquid media. The WIKA -ScrutonWell® design is based on the ASME paper “Helical strakes in suppressing vortex-induced vibrations” (ASME report 11/2011 vol. 113.). The tests for this report ...

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What are suitable materials for thermowells and protection tubes for negative temperatures?

The first choice for high-temperature applications should always be stainless steel, such as 1.4404 (Approval per AD2000 W10 down to -270 °C) or 316L. Carbon steels should be considered carefully in detail, through the effect of the drop-off effect.

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What is a helium leak test?

For leak testing in accordance with DIN EN 1779 (1999) / EN 13185, helium 4.6 is used as a test gas. The test is able to detect minimal leakage rates and is considered the most sensitive test method for leak testing. In general, one should distinguis ...

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