This is a stainless steel, Type-K Thermocouple probe. A thermocouple works by taking two wires made of dissimilar metals, connecting them at the two ends, and making a temperature gradient between one end and the other (a 'hot' end and a 'cold' one). Once this is achieved, a voltage potential is formed and current flows. One junction is held in the environment where the temperature of interest exists, this is known as the hot junction. The other junction, referred to as the cold junction, can typically be found in ICs that specialize in reading the temperatures detected by the thermocouple probe.
This common Type-K Thermocouple is made out of chromel and alumel, while offering a temperature high of 400°C and a low of 0°C. The probe itself is only 200mm (7.8in) long with a diameter of 5mm (~0.2in) and is terminated with a standard thermocouple connector.
Note: This Type-K Thermocouple probe is not intended to be used for food.
If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
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Based on 4 ratings:
Nice probe. The connector is easy to remove as I didn't need it for my application. All metal construction makes it easy to clean.
If you ground the housing and try to read this probe out with the MAX31855K breakout board, you must float your Arduino and everything else otherwise it doesn't work. I have a more expensive probe from another source which is electrically isolated.
Still, the price is so low it is good for some applications.
I tried to use this probe inside my reflow oven project, the temperature measured is not correct, >10°C less than the one measured with my multi-meter.
Combined it with the SparkFun Qwiic Thermocouple Amplifier - MCP9600
It read 2.3 C in an ice bath (my kitchen thermometer read 0.6 C for reference) It read 99.5 C in boiling water pretty close to sea level.
MCP9600 specifies a worst case accuracy of ±1.5°C, so my tests showed something was out of spec. No idea if the thermocouple or MCP9600 is at fault though.
Also, the thermocouple is no longer electrically connected to the housing. Maybe Sparkfun got a new supplier since Member #32186 left their review?
no complaints about the physical construction.