7Semi PT1000 RTD 2-Wire Temperature Sensor Amplifier Breakout Board - MAX31865

The 7Semi PT1000 RTD 2-Wire Temperature Sensor Amplifier Breakout Board is built around the MAX31865 RTD-to-digital converter, designed specifically for precision temperature measurement using PT1000 platinum RTD sensors. It accurately converts small resistance changes of the PT1000 into digital temperature values using an internal high-resolution ADC. Although designed as a 2-wire configuration, the MAX31865 also supports 3-wire and 4-wire RTD setups, offering flexibility for advanced applications. With SPI communication and compatibility with both 3.3V and 5V logic systems, this breakout is ideal for industrial, scientific, and embedded temperature-measurement applications.

Technical Specifications:

• Supported RTD Sensor: PT1000 (platinum resistance temperature detector)
  
• Supported Wiring: 2-wire (also supports 3-wire and 4-wire RTD methods)
  
• Interface: SPI digital communication
  
• Logic / Operating Voltage: 3.3V (compatible with 3.3V or 5V logic MCUs)
  
• ADC Type: 15-bit delta-sigma ADC integrated in MAX31865
  
• RTD Resistance Range Supported: 100Ω to 1000Ω (PT100 to PT1000)
  
• Conversion Time: ~21 ms per reading
  
• Fault Detection: Open-circuit RTD, short-circuit, cable fault detection
  
• Sensor Accuracy: High stability and repeatability due to platinum RTD characteristics
  
• Temperature Range: Supports the full PT1000 operating range (based on RTD characteristics)
  
• Communication: SPI for temperature data and fault reporting

Features:

• High-precision temperature measurement using PT1000 RTD
  
• MAX31865 RTD-to-digital converter eliminates need for external ADC
  
• Supports 2-wire, 3-wire, and 4-wire RTD connections
  
• SPI interface enables easy integration with microcontrollers (Arduino, ESP32, STM32, Raspberry Pi)
  
• Works with both 3.3V and 5V logic levels
  
• Built-in fault detection for open/short/cable issues
  
• High-resolution 15-bit ADC ensures accurate and stable readings
  
• Ideal for industrial, laboratory, and scientific environments
  
• Highly reliable and stable platinum RTD measurement
  
• Compact breakout board suitable for embedded systems and prototyping

Applications:

• Industrial process temperature monitoring
  
• Laboratory and scientific measurement systems
  
• HVAC and environmental control systems
  
• Embedded temperature-measurement projects
  
• Data-logging and long-term thermal monitoring
  
• Automation and industrial control loops
  
• Oven, furnace, heater, and climate-controlled systems
  
• IoT and smart-home temperature-tracking applications