7Semi PT100 RTD 2-Wire Temperature Sensor Amplifier Breakout Board - MAX31865

The 7Semi PT100 RTD 2-Wire Temperature Sensor Amplifier Breakout Board is designed for accurate and reliable temperature monitoring using 2-wire PT100 resistance temperature detectors (RTDs). Built around the MAX31865 RTD-to-digital converter, the board measures changes in PT100 sensor resistance and converts them into digital data for temperature calculation. It communicates through an SPI interface and supports 3.3V or 5V power input, making it easy to integrate with Arduino, ESP32, Raspberry Pi, and other microcontrollers. Its compact design makes it suitable for industrial temperature monitoring, laboratory equipment, heating systems, and embedded applications.

Key Features

• MAX31865 RTD-to-Digital Converter: Uses the MAX31865 IC to convert PT100 sensor resistance measurements into digital data for reliable temperature monitoring.

• 2-Wire PT100 Compatibility: Designed specifically for 2-wire PT100 RTD probes, providing a straightforward connection for temperature measurement applications.

• High-Resolution Measurement: Features a 15-bit ADC for detailed resistance measurements, helping achieve accurate temperature readings with a suitable PT100 sensor.

• SPI Communication Interface: Enables convenient communication with Arduino, ESP32, Raspberry Pi, STM32, and other compatible controllers.

• Flexible Power Supply: Supports 3.3V or 5V power input, allowing integration with different microcontroller development platforms.

• Built-in Fault Detection: Detects RTD disconnection, short-circuit conditions, and certain electrical faults to support reliable system operation.

• Noise Filtering: Provides selectable 50Hz and 60Hz filtering to help reduce interference from electrical power systems.

• Compact and Easy to Integrate: Features a convenient terminal block for PT100 probe connections and accessible interface pins for embedded hardware projects.