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. 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.

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FAQ

What is the appropriate sensor length for a thermometer within a thermowell?

For mechanical thermometers, the sensor must have no contact with the bottom of the bore, rather it must be arranged with an air gap of 2-5mm.  For electrical thermometers, the sensor is spring-loaded, since the sensor tip must be touching the bottom of the bo ... More

What tests are usual or possible for thermowells?

Common non-destructive tests are the pressure test and, for welded thermowells, the liquid penetrant test.  In addition, to test the centrality of the bore, ultrasound or X-ray testing is possible.  To test the sealing, helium leak testing is an option.&n ... More

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