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Type K Thermocouples

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

Used for their sensitivity and wide temperature range of -200ºC to 1,350ºC, type K thermocouples are considered general purpose devices because of their many uses in common, everyday applications. They usually have a high sensitivity, about 4/µv/cº. Type K exhibits high thermopower and good resistance to oxidation but remains inexpensive while lasting a long time. Read More…

Type K Thermocouples Type K thermocouples are the most common and universal type of temperature sensors today.
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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 $$$

Newton Highlands, MA  |  617-527-4385

The Arklay S. Richards Co., Inc. manufactures thermocouples used for accurate high temperature monitoring and precise temperature control. Our thermocouples range from extremely small wire probes to very large industrial pipe and thermowell assemblies. In industrial applications, Type K thermocouples are most common. Thermocouples can also be ordered with Type B, Type E, Type J, Type N, Type R, Type S, Type T, Type C, and Type P calibrations. Call us today for more information!

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Arklay S. Richards Co., Inc. $$$

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 Arklay S. Richards Co., Inc. Backer Hotwatt, Inc. Ulanet™

Type K thermocouples are used in all sorts of different heat and temperature applications, since they have good temperature precision and a wide measurement range. This kind of thermocouple is popular and available in a wide variety of probes. Since it has such a high temperature range, type K are especially used within the steel and iron fabrication industries. They measure the metal’s chemical composition and temperature during machining or casting to know when it has melted to a certain temperature and is ready to form.

Thermo Sensors Thermocouple Assembly Components Type K Thermocouples - Thermo Sensors Corporation

Other industrial applications, which use type K thermocouples’ temperature range, include kilns, ovens, plastic extrusion machines, pressure chambers, water tanks, heat exchangers and parts washers. Heated appliances like gas stoves also use type K thermocouples as heat sensors to keep from overheating, which is a safety concern and could cause damage. In the home, standard thermostats and temperature switches are also monitored by type K thermocouples because they are so inexpensive and easy to install.

All type K thermocouples are made of a series of thin, bendable wire constructions. Each wire is made of either chromel, which is a chromium and nickel alloy, or alumel, which is an aluminum and nickel alloy. They are joined with digital devices for fast, easy readout and always use metal or ceramic protective tubes, especially when reducing atmospheres because type K perform poorly in this application. They are considered homebody thermocouples, as opposed to uppercrust, rarified and exotic. To differentiate between these different types, the wires are always labeled with a colored connector; type K are yellow.

All thermocouple instruments are divided into temperature capacity categories. Type K, because they measure up to around 2000º C, are considered noble metal thermocouples. Because thermocouples are simple in design, fabrication and assembly processes are quick and inexpensive. The wires are all extruded, which involves heating a metal alloy preform billet and forcing it through successively smaller and smaller molds until the desired wire shape and size is accomplished. The wires are easily bendable, and can twist together without the application of heat or much force.

Type K Thermocouples Informational Video