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Rosemount™ Twisted Square™ Thermowell

Accurately measure process temperature without compromising safety. CHALLENGE: Thermowells in flow are subjected to dynamic and static
forces that, if not accounted for, could lead to thermowell failure. The ASME PTC 19.3 TW is recognized as the global standard for designing safe and reliable thermowells. However, calculations to avoid vortex induced vibration (VIV) issues are very challenging and often require modifying the thermowell design with reduced lengths and increased diameters. In some cases there are no possible thermowell design solutions, thus leaving designers with no thermowell options at all.

OUR SOLUTION: The Rosemount Twisted Square Thermowell is a revolutionary design manufactured specifically to eliminate the concern of VIV that can lead to thermowell stem failure. It damps the vibrations by over 90 percent, drastically reducing the dynamic stresses experienced by the thermowell. This allows the Twisted Square to operate in process conditions that a conventional thermowell cannot.

The Twisted Square also doesn’t experience the frequency limitations with which conventional thermowells are plagued Its unique design simplifies the thermowell design process and greatly reduces the risk of thermowell failures with its ability to handle applications with changing process conditions.

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Rosemount™ Twisted Square™ Thermowell

Accurately measure process temperature without compromising safety. CHALLENGE: Thermowells in flow are subjected to dynamic and static
forces that, if not accounted for, could lead to thermowell failure. The ASME PTC 19.3 TW is recognized as the global standard for designing safe and reliable ...


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