MAX31855EVKIT#-ND (Manufacturer - MAX31855EVKIT#) Arduino Thermocouple Shield - McLEng. From McLEng Version 2.1 Single Channel The thermocouple shield was based upon the original breakout board developed for the MAX6675, See Single Thermocouple Interface for more details.
MAX31855 Arduino Library - McLEng. MAX31855 Thermocouple to Digital Converter PTM by Digi-Key and Maxim. MAX6675 - McLEng. From McLEng MAX6675 Chip The MAX6675 performs cold-junction compensation and digitizes the signal from a type-K thermocouple.
The data is output in a 12-bit resolution, SPI™-compatible, read-only format. This converter resolves temperatures to 0.25°C, allows readings as high as +1024°C, and exhibits thermocouple accuracy of 2˚C for temperatures ranging from 0°C to +700°C. ++ Modern thermocouples and high resolution delta-sigma ADC. Thermal Management Handbook. MAX31855EVKIT.pdf (application/pdf-object) MAX31855EVKIT Evaluation Kit for the MAX31855. New thermocouple interface: MAX31855. I got around to breadboarding a K type MAX31855 circuit today.
With the probe stuck under my tongue, I measured 93.65 degrees F. The data sheet says they do a linear fit to the actual curve so I don't know if that is an acceptable error or not. Edit: I tried it in boiling water and got around 205 degrees F. That's about a 3.3% error. Cold-junction compensated thermocouple-to-digital converter. Thermocouple Introduction and Theory.