Official 7Semi PT100 RTD 3-Wire Temperature Sensor Amplifier Breakout Board – MAX31865

The Official 7Semi PT100 RTD 3-Wire Temperature Sensor Amplifier Breakout Board – MAX31865 is a precision-engineered solution designed for accurate and reliable temperature measurement in industrial, laboratory, and embedded system applications. Built around the MAX31865 RTD-to-Digital Converter, this breakout board simplifies the process of interfacing PT100 and PT1000 RTD sensors with modern microcontrollers while maintaining high accuracy and stability.

This board supports 2-wire, 3-wire, and 4-wire RTD configurations, making it highly versatile for different measurement environments. Optimized for 3-wire PT100 sensors, it effectively compensates for lead resistance, ensuring precise temperature readings across a wide operating range. The MAX31865 features a high-resolution ADC and integrated fault detection, allowing users to monitor sensor health and identify wiring issues such as open or short circuits.

With an SPI digital interface, the 7Semi MAX31865 breakout board seamlessly connects to popular development platforms including Arduino, ESP32, Raspberry Pi, STM32, and other microcontrollers. The onboard precision reference resistor ensures measurement consistency, while configurable gain and filtering options help reduce noise in electrically harsh environments.

Designed for ease of use and long-term reliability, this compact breakout board is ideal for applications such as industrial automation, HVAC systems, laboratory instrumentation, process control, and data logging. Whether you are developing a professional monitoring system or a high-accuracy prototype, the 7Semi PT100 RTD Amplifier Breakout Board delivers dependable performance with minimal setup effort.

• Industrial-Grade Precision: Harness the power of the PT100 RTD, a gold standard in industrial temperature sensing. Renowned for its exceptional accuracy, repeatability, and stability, it outperforms thermocouples in demanding applications.
• MAX31865 RTD Amplifier: This purpose-built amplifier optimizes the PT100 RTD’s performance. By expertly reading low resistances, it guarantees accurate signal processing and minimizes errors.
• 3-Wire Configuration: Seamlessly integrate the breakout board into your existing setup with its flexible 3-wire RTD compatibility.
• High Accuracy Temperature Sensor: Experience temperature readings with minimal drift and high resolution, ensuring your critical applications receive the precision they demand.
• SPI Interface: Effortlessly connect this breakout board to popular microcontrollers like Arduino and Raspberry Pi for simplified data logging and control.
• Calibration Capabilities: The MAX31865 amplifier includes calibration features, ensuring consistent and accurate readings over time.
• Built-in Fault Detection: Enhance your system’s reliability with the MAX31865’s fault detection mechanisms. Identify sensor disconnections or over-temperature conditions promptly.
• Versatile Applications: Ideal for a wide range of uses, including thermal cycling experiments, industrial process control, laboratory research, and any project where precise temperature sensing is crucial.

Connection Diagram

Resources

• Datasheet

Package Includes

• 1x Official 7Semi PT100 RTD 3-Wire Temperature Sensor Amplifier Breakout Board