Online Thermowell Calculation Tool Incorporates New ASME Standard

By Chemical Processing staff

Feb 11, 2013

Emerson Process Management has introduced an online thermowell calculation tool on its Rosemount website that incorporates the new ASME PTC 19.3 TW standard. 

The new tool gives users the option to perform a quick pass or fail thermowell calculation. It has been designed to help users save time by performing iterative, preliminary calculations to select the right thermowell earlier in the design process.

In addition to the tool, the website has a link to an R21 report request form for official evaluations. Once the thermowell order is ready to be placed, the official R21 report provides detailed documentation of the thermowell calculation.

A video and white paper are also available on the website that explain the new ASME PTC 19.3 TW standard. Enhancements in the new standards and thermowell calculation tool include different types of stem profiles, more accurate natural frequency equations and a calculated Strouhal number. The new standard also provides natural frequency correction factors that take into account different components of the thermowell such as the mounting style and temperature sensor mass. 

To try Emerson’s thermowell calculation tool, learn about the ASME PTC 19.3 TW standard and read the white paper visit

Show Comments
Hide Comments

Join the discussion

We welcome your thoughtful comments.
All comments will display your user name.

Want to participate in the discussion?

Register for free

Log in for complete access.


No one has commented on this page yet.

RSS feed for comments on this page | RSS feed for all comments