Type K Thermocouple Probe -40 to 1000 °C (Class 1, ±1.5 °C)
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Prices updated: 14 Oct 2026
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About this product
A Type K thermocouple made from Chromel and Alumel conductors, measuring from -40 to +1000 °C with class 1 accuracy of ±1.5 °C over that range. It can be attached to objects and used to measure air or liquid temperature. It is used in temperature control equipment, the chemical industry and medical electronics, and requires a thermocouple amplifier to read.
Specifications
- Type
- Type K (Chromel / Alumel)
- Measuring range
- -40 to +1000 °C
- Accuracy
- ±1.5 °C over -40 to +1000 °C (class 1)
Frequently asked questions
How do I read it with an Arduino or ESP32?
A thermocouple outputs a very small voltage, so it needs a dedicated amplifier with cold-junction compensation, such as the MAX31855 or MAX6675, which then communicates with the microcontroller over SPI.
Does polarity matter when wiring the probe?
Yes. Connect the leads with the correct polarity as marked on the probe. By the ANSI colour convention for Type K, yellow is positive and red is negative.
