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A reliable source for Thermowells information and leading Thermowells Companies & Manufacturers.

These are used in industrial monitoring processes which may include a corrosive substance or high pressure and flow velocity, and the thermowells provide a protective barrier between the thermocouple and the liquid, gas or environment which it is being used to monitor. Read More…

Thermowells Thermowells are receptacles used to protect temperature sensors such as resistance temperature detectors and thermocouples.
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Leading Manufacturers

Garland, TX  |  800-889-5478

In business since 1972, Thermo Sensors Corporation is a leading thermocouple manufacturer of an array of many products and services.

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Thermo Sensors Corporation $$$

Quakertown, PA  |  800-784-3783

We manufacture a full line of Thermocouples to fit your application. Temperatures from cryogenic to 4000F, and sizes ranging from needle thin to several thousand pound multipoint temperature sensors.

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Thermocouple Technology, LLC $$$

Mississauga, ON  |  905-238-7060

Kelvin Technologies is a high-quality thermocouple manufacturer, representative, and distributor for all of your electrical heating, temperature controlling, and temperature sensing requirements. Our products are engineered and manufactured in-house to address specific requirements, such as higher temperatures and more compact profiles. With over 100 years of combined experience, all of us at Kelvin Technologies take pride in the quality of product and level of service we provide our customers.

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Kelvin Technologies, Inc. $$$

St. Francis, MN  |  800-272-5709

Temperature Specialists, Incorporated is a manufacturer of quality thermocouples. Temperature Specialists provide solutions for your sensing needs by building to meet your specifications. Feel free to visit their comprehensive and helpful website for full descriptions of their state-of-the-art line of quality products and services or call their experts with any questions.

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Temperature Specialists, Inc. $$$

Hudson, MA  |  800-343-4492

Since 1971, Thermalogic has been a leading manufacturer of electronic temperature and humidity control and sensors. Here at Thermalogic we work with our clients in a partnership to build a lasting business relationship. All of our products have quick turnaround times, including custom designs, and are thoroughly tested prior to being sent out. At Thermalogic we pride ourselves on our high quality, industrial grade, reliable products. Contact us today to get started!

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Thermalogic® Corporation $$$

Danvers, MA  |  978-777-0070

Backer Hotwatt manufactures a complete line of electric heating elements for a wide range of uses. We offer a broad product line of cartridge heating elements, tubular heating elements and immersion heating elements.

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Backer Hotwatt, Inc. $$$

Columbus, IN  |  812-372-0281

We have over 81 years of successful manufacturing experience and we offer a wide range of solutions. Our thermostats are utilized in industries including HVAC, process heating, food service, laboratory tank heating, industrial system control, and more. We have made it our mission to remain on the forefront of our industry and we work closely with our customers to ensure maximum satisfaction.

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Ulanet™ $$$
placeholder image Thermo Sensors Corporation Thermocouple Technology, LLC Kelvin Technologies, Inc. Temperature Specialists, Inc. Thermalogic® Corporation Backer Hotwatt, Inc. Ulanet™

Used in applications for petrochemical, refining, food processing, pharmaceutical, cosmetics and other processing industries, temperature sensors and thermocouples are often subject to pressure or incompatible substance contact, therefore a thermowell is used to protect them. Aerodynamic or hydrostatic forces typically act upon the thermowells which can be designed to be low pressure or high pressure depending on the nature of the application. Thermowells further protect thermocouples from damage as a result of other process forces such as vibration, corrosion or abrasion, or from mechanical damage.

Thermal Devices Lagging Thermowell Thermowells - Thermal Devices

One of the main benefits to using thermowells, apart from the protection of the sensor or temperature probe, is that thermowells provide easier access to the temperature sensors and thermocouples within the measuring system. They facilitate in the checking, repair or removal of the sensor, or in the relocation of the probe to a different point within the process system without disturbing or compromising the process.

Common designs of thermowells include: threaded, flanged, weld-in or screw-in, retractable and sanitary. There are a number of standard size and shape thermowells which are suitable for use in many different applications; however, custom thermowells can be designed to fit into a process with specific requirements and restrictions. Some important factors to keep in mind when determining the most suitable thermowell for an application include: stem length, bore diameter, lagging extensions and the thickness of the substance the thermocouple is being used to monitor.

The bore diameter is the size of the opening that the temperature probe will be put into and the stem length is the distance from the bore to the wall of the tube or pipe. Lagging extensions take into consideration the pipe fittings and insulation. Material choice for the construction of thermowells should also be carefully considered with regard to chemical reactivity, corrosion resistance and a material's reaction to temperature increase or decrease. Commonly used materials for thermowells include durable metals such as carbon steel and stainless steel, as well as other materials such as monel and brass. For flanged thermowells, appropriate flange size and rating will also need to be determined.

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