MAX31855

From McLEng

The MAX31855 performs cold-junction compensation and digitizes the signal from a K, J, N, T, or E type thermocouple. (Contact the factory for S and R type thermocouples.) The data is output in a signed 14-bit, SPI™-compatible, read-only format. This converter resolves temperatures to 0.25°C, allows readings as high as +1800°C and as low as -270°C, and exhibits thermocouple accuracy of ±2°C for temperatures ranging from -200°C to +700°C for K-type thermocouples. For full range accuracies and other thermocouple types, see the Thermal Characteristics specifications in the full data sheet.

Features

• Cold-Junction Compensation
• 14-Bit, 0.25°C Resolution
• Versions Available for K, J, N, T, and E Type Thermocouples (Contact Factory for S and R Types) (see Table 1 in the full data sheet)
• Simple SPI-Compatible Interface (Read-Only)
• Detects Thermocouple Shorts to GND or VCC
• Detects Open Thermocouple

Arduino Library

https://github.com/ryanjmclaughlin/MAX31855_Library

More Details

Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX31855.pdf