The thermocouple is very sensitive and requires a good amplifier with low temperature compensation standard.
The MAX31855K has all features and allows you to easily interface, with any microcontroller even if there is no analog input.
Features:
SPI interface, high speed transmission
Input voltage is 3-5v DC
Direct. Digital output temperature value, no amplifier, no ADC
14-bit resolution, 0.25 degree temperature accuracy
Any K type thermocouple
Operating with K thermocouple has an accuracy of about ±2°C - ±6°C
PCB Board Size: 0.8 x 0.9 inches (20 x 23 mm).
Package List:
1 X K Type Thermocouple Module