MAX31855 K Thermocouple Temperature Measurement Sensor

Cold-Junction Compensation IC: Features the Maxim MAX31855 cold-junction compensated K-type thermocouple-to-digital converter for high-accuracy thermal readings without external reference junctions.

Extreme Thermal Measurement Range: Capable of reading wide temperature ranges from -200°C up to +1350°C (dependent on the connected K-type thermocouple probe).

14-Bit Resolution ADC: High-resolution digital conversion delivers 0.25°C temperature resolution with an accuracy of -+ 2°C across high thermal spans.

4-Wire SPI Digital Interface: Communicates over a standard read-only SPI bus interface, making it easily compatible with Arduino, Raspberry Pi, ESP32, and STM32 platforms.

Integrated Fault Detection: Onboard diagnostic circuitry detects open thermocouple wires, short circuits to VCC or GND, and out-of-spec thermal conditions.

Board Material: High-grade FR-4 glass-epoxy PCB with onboard 3.3V voltage regulator, logic level shifting circuitry, 2-pin screw terminal block, and header pins.

Technical Specifications:

Input Power: 3.0V – 5.5V DC.

Supported Sensor Type: K-type Thermocouple.

Communication Protocol: SPI (Read-Only).

Board Color: Blue PCB with Green Terminal Block.

Usage Advice: Mind thermocouple wire polarity when clamping into the screw terminal (+ and - leads) to ensure proper directional temperature scaling.

Maintenance: Keep the breakout board free from conductive dust, flux residue, and moisture to avoid measurement interference on analog input channels.

Essential High-Temperature Digital Breakout: Position as the go-to breakout module for extreme high-temperature projects like 3D printer hotends, kilns, pizza ovens, automotive exhaust gas monitoring, and industrial boilers.

Highlight Built-In Cold Junction Compensation: Emphasize how the MAX31855 simplifies complex thermocouple math by providing direct, compensated digital temperature data over SPI.

Recommended Cross-Sell Add-ons: Pair with MAX31865 - PT100 RTD Temperature Sensor Amplifier, PT100 Platinum Resister Temp Sensor Probe -20℃~450, PT1000 Platinum Resister Temp Sensor Probe -40 ~ 450℃, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Temperature Sensor Probes collection page as your standard K-type thermocouple amplifier breakout module.