Type K Thermocouples
Learn more about our Type K Thermocouples
UK Manufactured Type K Thermocouple
Type K Thermocouple is a Base metal thermocouple made from conductors containing Nickel – Chromium, and Nickel – Aluminium alloys and is suited for measuring temperatures up to +1200°C. We are K-type thermocouple manufacturers and can produce K-type thermocouple sensors based on your specifications or as replacements for existing sensors. We have manufactured thermocouples for over 25 years and are solely focused on designing and manufacturing temperature sensors. Please call or email us to discuss your requirements.
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Type K Thermocouple Designs
K type thermocouples can come in a variety of designs suited to different applications. View the details of each type of design we offer for the type K thermocouples range.
- Mineral Insulated Type K – Metal sheath insulated with magnesium oxide powder also called MIMS.
- Cable/Wire Type K – Flexible sensors in PVC, PTFE or Glass Fibre. Many cold and hot-end designs.
- Type K with Ceramic Sheaths – High-temperature design with ceramic protection sheath
- Type K with Metal Sheaths – High temperature design with metal protection sheath
- Type K Inserts – Rigid metal tubes commonly used in pocket, thermowell or head assemblies.
- Type K Elements – Basic elements for further assembly into sheaths or equipment.
K Type Thermocouple Specifications
K type thermocouple sensors are by far the most common thermocouple type in use. It is quite an inexpensive sensor and we can manufacture many different designs of this thermocouple type. Its range is common for many industrial processes and is the main base metal thermocouple before switching to a rare metal thermocouple. The high nickel content of Type K means it is a very stable sensor. Thermocouple type K is unsuitable for reducing atmospheres unless it is protected by a sheath. It’s sensitivity is around 41 µV/°C.
Type K Thermocouple Temperature Range
0 to +1100 °C
-180 to +1300 °C
Chromel (90%Ni, 10%Cr)
Alumel (95%NI, 2%Mg, 2%Al, 1%Si)
Tolerance Class 1
-40 to +375 ± 1.5 °C
375 to 1000 ± 0.004*[t]°C
Tolerance Class 2
-40 to +333 ± 2.5 °C
333 to 1200 ± 0.0075*[t]°C
IEC Colour Code
BS Colour Code
ANSI Colour Code
We’ve made Type K Thermocouples for over 15 years and today we are considered the best choice for custom built temperature sensors in the UK. We continue to apply our expertise and invest in the latest technology to provide our customers with the highest quality temperature sensors available.
Contact us with your requirements if you have an existing sensor design or are unsure what you need we’ll be able to find you get the right sensor for your process.