Type K is one of the most common general-purpose thermocouples, with a sensitivity of approximately 41 μV/°C. It is inexpensive; its potential range is –270°C to +1,372°C; and it is relatively linear.

Different thermocouple types have different combinations of metal in the wires and are used to measure different temperature ranges. For example, J type thermocouples are made with iron and constantan ...

You can see the video below, which includes an underwhelming teardown. The device is a J thermocouple and a decidedly vintage analog meter. What’s inside? Nearly nothing. So why did the meter ...

A Thermocouple is a terrific way to measure temperature. The effects of temperature change on dissimilar metals produces a measurable voltage. But to make that measurement you need an amplifier ...