Thermowell

Thermowells are used in industrial temperature measurement to provide isolation between a temperature sensor (often a thermocouple) and the environment whose temperature is to be measured.

They are intrusive fittings and are subject to static and dynamic fluid forces. These forces govern their design. Vortex shedding is the dominant concern as it is capable of forcing the thermowell into flow-induced resonance and consequent fatigue failure. The latter is particularly significant at high fluid velocities.

The ASME Performance Test Code (PTC 19.3) is the most widely used basis for thermowell design. It is currently being updated to cover a broader range of thermowell designs and fluid conditions.

External links

Tempsens <ref>http://www.thermowellworld.com/ is the largest manufacturers of

Thermocouples and Rtd’s in India.

Types of Thermowells:-

• Threaded Thermowells
• Flanged Thermowells
• Stepped Thermowells
• Vanstone Thermowells
• Socket weld Thermowells
• Weld-in Thermowells

Materials:- AISI SS304, SS316, SS316L, SS310, HRS446, Inconel 600/800,Hastalloy,Monel etc.

Thermowells are also available in fabricated or drilled barstock Type.

Tempsens <ref>http://www.tempsensindia.com/ also manufacture special type of

Thermowell on customer demand and as per application requirement Such as:

• Metal Thermowells with Tungsten Carbide / Ceramic / PTFE / PVDF / PFA Coatings
• Thermowells with Solid Sintered Tungsten Carbide,
• Silicon Carbide ,
• Platinum Thimble
• Tantalum Thimble
• Nickle Cladding Graphite Thermowells
• IBR Stamped Thermowells.

• PTC 19.3 Committee
• More thermowell information
• [www.tempsensindia.com]
• [www.thermowellworld.com]