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

The 7Semi PT100 RTD 3-Wire Temperature Sensor Amplifier Breakout Board is a high-accuracy temperature measurement module based on the MAX31865 precision RTD-to-digital converter. It is specifically designed for use with PT100 RTD sensors and provides precise temperature readings with digital output over an SPI interface. The breakout board simplifies the process of interfacing platinum resistance temperature detectors (RTDs) with microcontrollers or embedded systems, offering stable, linear, and noise-resistant measurements suitable for both industrial and laboratory applications.

Technical Specifications:

• Chipset: MAX31865 (RTD-to-Digital Converter)
  
• Compatible Sensor: PT100 RTD (3-wire configuration)
  
• Sensor Type: Platinum resistance temperature detector (RTD)
  
• Temperature Range: -200°C to +850°C (dependent on RTD type)
  
• Resolution: 15-bit ADC resolution
  
• Interface: SPI (Serial Peripheral Interface)
  
• Supply Voltage: 3.0 V to 5.5 V
  
• Reference Resistor: Precision resistor onboard for accurate calibration
  
• RTD Connection: 3-wire connection (minimizes lead resistance error)
  
• Operating Temperature: -40°C to +125°C
  
• Accuracy: ±0.5°C typical (depending on calibration and RTD)
  
• Power Consumption: Low-power operation suitable for embedded systems
  
• PCB Type: High-quality FR-4 with plated-through holes
  
• Protection: Onboard filtering and noise suppression circuitry

Features:

• Supports PT100 3-wire RTD sensors for accurate temperature measurement
  
• Utilizes MAX31865 IC for precise digital conversion and linearization
  
• SPI interface for easy microcontroller communication
  
• Compensation for lead wire resistance in 3-wire configuration
  
• Wide temperature measurement range (-200°C to +850°C)
  
• Onboard precision reference resistor ensures measurement stability
  
• Compact breakout board design for easy integration
  
• Suitable for both 3.3 V and 5 V logic levels
  
• Reliable and low-noise design for industrial-grade performance

Applications:

• Industrial temperature monitoring and control
  
• Laboratory instrumentation and calibration systems
  
• HVAC and environmental monitoring equipment
  
• IoT temperature sensing modules
  
• Process automation and manufacturing systems
  
• Food, pharmaceutical, and chemical processing
  
• Embedded systems requiring high-accuracy temperature data