Thermocouples are very sensitive, and therefore need to use cold compensation requires a good amplifier. All the MAX31855K ​​for you, you can easily with any microcontroller, or even a no analog input IO port. The interface board MAX31855K ​​chip, a 3.3V regulator with bypass capacitors with 10uF and level shifting circuit, equipped with a 2-pin terminal block (for connecting to the thermocouple)
MAX31855K ​​now used instead of the previous MAX6675 chip, so it is possible to measure a wide temperature measuring range. Now includes ferrite beads and filter capacitors onboard for better stability.

Features:
Works with any K type thermocouple
Will not work with any other kind of thermocouple other than K type
-200°C to +1350°C output in 0.25 degree increments
Internal temperature reading
3.3 to 5v power supply and logic level compliant!
SPI data output requires any 3 digital I/O pins.
Length: 20mm/0.8in
Width: 20mm/0.8in
Height: 3.28mm/0.12in
Weight: 1.33g/0.05oz