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.

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. Thermo Sensors provides the chemical, petrochemical, refining, food, pharmaceutical and other industries with options of standard & special designs. Contact them for information about their products, competitive pricing & rapid delivery!

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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. In addition to our standardized product lines, TTEC offers design solutions to meet the specific needs of your application. Our products are in use worldwide, in almost every industry. Give us a call today to discuss your requirements.

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Thermocouple Technology, LLC $$$

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. $$$

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. Custom heating elements-crankcase heaters, ceramic heaters and more are available, such as heating coils & ceramic heating elements. We have been creating heating elements for 60 years.

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Backer Hotwatt, Inc. $$$

Reno, NV  |  800-257-3526

As a supplier of thermal products such as thermostats, thermistors, thermocouples, panel instruments, photo cells and knobs, our range of products are ready for shipment to your door. Our thermistors are used for sensing surface temperatures. We can also manufacture special electronic controls.

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Selco Products Company $$$
placeholder image Thermo Sensors Corporation Thermocouple Technology, LLC Temperature Specialists, Inc. Backer Hotwatt, Inc. Selco Products Company

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