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.

Need some help?

If you are unsure exactly what you need, get in touch and we can help identify your requirements.

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.

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

Short Term:

-180 to +1300 °C


Chromel (90%Ni, 10%Cr)

Alumel (95%NI, 2%Mg, 2%Al, 1%Si)

Tolerance Details

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

Colour Codes

IEC Colour Code

Type K IEC Cable Colour Coding

BS Colour Code

Type K BS Cable Colour Coding

ANSI Colour Code

Type K ANSI Cable Colour Coding

Contact us

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.

Submit an Enquiry

"*" indicates required fields

This field is for validation purposes and should be left unchanged.
    Your Basket
    Your basket is emptyReturn to Shop
        Scroll to Top