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Posts Tagged ‘PTC 19.3 TW’

Resources for Thermowell Selection and Design

Posted in Temperature on Thursday, April 9th, 2015. No comments yet
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Measuring and controlling temperature can the most important parameter in many production processes. It’s not only the temperature sensors that are important, but how they are protected by thermowells. Wikipedia has a good definition of what thermowells are: Thermowells are tubular fittings used to protect temperature sensors installed in industrial processes. A thermowell consists of […]

How to Choose the Right Thermowell

Posted in Temperature on Tuesday, July 1st, 2014. 3 comments so far
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Let’s continue our series of posts on the educational temperature measurement videos from Emerson’s team managing the Rosemount brand of products and services. You can find the complete set of videos on the Temperature Insights page. Thermowells shield thermocouples and RTD sensors from direct contact with the process. This 4:30 YouTube video, Thermowell Selection, highlights […]

Online Calculation Tool for Thermowell Installations

Posted in Regulatory Compliance, Temperature on Tuesday, January 29th, 2013. 8 comments so far
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Back in 1974, the ASME (founded as the American Society of Mechanical Engineers) published a performance technology standard for thermowell calculations as well as overall temperature measurement best practices, PTC 19.3. Based on decades of industry and research data, the updated PTC 19.3 TW-2010: …incorporates the latest theory in the areas of natural frequency, Strouhal […]

Velocity Collars are Not the Answer to Thermowell Resonance

Posted in Measurement, Plant Equipment on Wednesday, March 16th, 2011. 4 comments so far
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A few weeks ago, I highlighted the issue of resonance and thermowells in a post, New Thermowell Calculations Help Avoid Damaging Resonance. Thermowells are the circular cylinder installed like a cantilever into process piping. The temperature sensor goes into the thermowell, to be able to measure the temperature of the fluid in the pipe without […]