The 7Semi PT1000 RTD 3-Wire Temperature Sensor Amplifier Breakout Board is designed for precision temperature measurement using a PT1000 platinum RTD. Built around the MAX31865 RTD-to-digital converter, this module supports 2-wire, 3-wire, and 4-wire RTD configurations, with the 3-wire method providing improved accuracy by compensating for lead resistance. With onboard fault detection, a high-resolution ADC, and SPI communication, this breakout is ideal for industrial, laboratory, HVAC, and embedded temperature-sensing applications.

Technical Specifications:

• Supported Sensor: PT1000 platinum RTD
  
• Supported Wiring Methods: 2-wire, 3-wire, or 4-wire
  
• Interface: SPI digital communication
  
• Operating / Logic Voltage: 3.3V (compatible with 3.3V and 5V logic)
  
• ADC Resolution: 15-bit delta-sigma ADC
  
• RTD Resistance Range Supported: 100Ω to 1000Ω (PT100 to PT1000)
  
• Temperature Resolution: ~0.03125°C (dependent on wiring and RTD characteristics)
  
• Conversion Time: ~21 ms per reading
  
• Fault Detection: Open-circuit RTD, short-circuit, and cable fault detection
  
• Input Protection: ±45V protection on RTD inputs
  
• Temperature Range: Supports full PT1000 measurement range
  
• Board Type: Compact breakout with SPI pins

Features:

• High-precision temperature sensing using PT1000 RTD
  
• 3-wire RTD configuration helps compensate for lead resistance errors
  
• MAX31865 RTD-to-digital converter simplifies design (no external ADC needed)
  
• SPI interface makes integration easy with microcontrollers (Arduino, ESP32, STM32, Raspberry Pi)
  
• Supports 2-wire, 3-wire, and 4-wire RTD configurations
  
• Works with both 3.3V and 5V logic MCU systems
  
• Built-in fault detection for sensor and wiring issues
  
• High-resolution ADC ensures accurate, stable readings
  
• Suitable for industrial, laboratory, and scientific temperature measurement
  
• Compact module ideal for embedded designs and prototypes

Applications:

• Industrial process and equipment temperature monitoring
  
• Laboratory and scientific instrumentation
  
• HVAC and environmental control systems
  
• Embedded systems requiring accurate temperature feedback
  
• Data logging and long-term environment monitoring
  
• Automation and control systems
  
• Temperature monitoring in ovens, furnaces, heaters, and climate chambers
  
• Smart-home and IoT temperature-tracking systems