Type B Thermocouples

Type B Thermocouple Manufacture

We manufacture type B temperature thermocouples to your specifications or as replacements to existing sensors. We have manufactured thermocouples for over 25 years and are solely focused on the design and manufacture of 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 B Thermocouple Designs

Type B Thermocouples can come in a variety of designs suited to different applications. View the detail of some of our Type B thermocouple designs we offer.

Type B Thermocouple with Ceramic Sheath

The most common B type design is to protect the thermocouple with a ceramic sheath. As type B sensors are used at such high temperatures, ceramics provide the greatest protection.

Type B Thermocouple with Metal Sheath

The main purpose of selecting a B type thermocouple over other thermocouple types is to measure very high temperatures. Metal sheaths have lower operating temperatures than ceramic sheaths so this design is quite rare.

Thermocouple Type B Technical Details

Type B has a very high maximum temperature. For short periods it can be used to measure temperatures up to 1850 °C, with up to 1700 °C being measured under continuous operation. One quirk of Type B thermocouples is that its output doesn’t change between 0 and 42 °C meaning that it is unsuitable for measuring temperatures near this range. We recommened Type B thermocouples are only used for measuring above 200 °C.

B Type Thermocouple Temperature Range


+200 to +1700 °C

Short Term:

0 to +1850 °C

B Type Thermocouple Material

Platinum/Rhodium (70%Pt, 30%Rh)

Platinum/Rhodium (94%Pt, 6%Rh)

B Type Thermocouple Tolerance Details

Tolerance Class 1

There is no standard available for type b class 1.

Tolerance Class 2

0 to +600 ± 1.5 °C

600 to 1600 ± 0.0025*[t]°C

B Type Thermocouple Colour Codes

IEC Colour Code

No standard defined as copper wire is used.

BS Colour Code

No standard defined as copper wire is used.

ANSI Colour Code

No standard defined as copper wire is used.

Contact us

We’ve made Type B Thermocouples for over 25 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.

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