7Semi MAX31855 Thermocouple Amplifier Breakout

The 7Semi MAX31855 Thermocouple Amplifier Breakout is a high-accuracy digital temperature-measurement module based on the MAX31855 thermocouple-to-digital converter. It reads K-type and other compatible thermocouples and outputs cold-junction-compensated temperature data through an SPI interface. Designed for high-temperature and industrial applications, this breakout is ideal for furnaces, 3D printers, HVAC systems, ovens, kilns, and embedded monitoring systems.

Technical Specifications:

• Sensor IC: MAX31855 thermocouple-to-digital converter
  
• Supported Thermocouples: K-type (primary), J, N, T, S, R, E (depending on thermocouple used)
  
• Temperature Range (K-type): –270°C to +1372°C
  
• Resolution: 14-bit, 0.25°C step size
  
• Interface: SPI digital communication
  
• Supply Voltage: Typically 3.3V (logic compatible)
  
• Output Type: Digital temperature reading with cold-junction compensation
  
• Fault Detection: Open thermocouple, short to GND, short to VCC
  
• Accuracy: High accuracy with internal compensation
  Sensor Type: Thermocouple interface with cold-junction sensor integrated

Features:

• Built-in cold-junction compensation for precise thermocouple readings
  
• Wide temperature measurement range suitable for extreme temperatures
  
• SPI communication for simple microcontroller integration
  
• Compatible with 3.3V logic systems (can be adapted for 5V systems)Supports multiple thermocouple types for flexibility
  
• High accuracy and stable digital output
• 0.25°C resolution for fine temperature measurement
  
• Fault detection improves reliability and safety
  
• Well-suited for industrial, laboratory, and high-temperature environments
  
• Compact breakout board easy to mount and integrate

Applications:

• Industrial furnaces, kilns, and heat-treatment systems
  
• 3D printing (hot-end and heated bed monitoring)
  
• HVAC systems and high-temperature monitoring
  
• Scientific research and laboratory instrumentation
  
• Food processing and oven temperature measurement
  
• Environmental test chambers
  
• Chemical and manufacturing process control
  
• High-temperature IoT and embedded systems
  
• Thermal profiling and calibration systems