The MAX31865 Temperature Sensor Module is a precision RTD (Resistance Temperature Detector) module designed for use with PT100 and PT1000 sensors. It provides accurate and stable temperature readings, ideal for industrial, laboratory, and DIY applications. With support for 2-wire, 3-wire, and 4-wire RTD connections, this module offers unmatched versatility and precision.
Features:
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Wide RTD Compatibility: Supports RTDs with resistance ranging from 100Ω to 1kΩ (PT100 to PT1000).
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Versatile Connectivity: Compatible with 2-wire, 3-wire, and 4-wire sensor configurations for better accuracy and reduced noise.
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High Precision ADC: 15-bit ADC resolution offering a nominal temperature resolution of 0.03125°C.
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Integrated Fault Detection: Detects RTD open circuits, short circuits, and voltage range faults to enhance system reliability.
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Stable Reference Resistor: Includes a 430Ω 0.1% reference resistor for accurate measurements.
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SPI Interface: Easy integration with microcontrollers like Arduino using SPI communication.
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Wide Compatibility: Includes onboard 3.3V regulator and level shifting for seamless use with 5V and 3.3V systems.
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Fast Conversion: Maximum conversion time of 21ms for quick and accurate readings.
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Robust Accuracy: Maintains a total accuracy of ±0.5°C (0.05% full scale) under all operating conditions.
Specifications
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RTD Support: 100Ω to 1kΩ platinum resistance (PT100 to PT1000).
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Interface: SPI-compatible.
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ADC Resolution: 15-bit.
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Temperature Resolution: 0.03125°C (variable based on RTD nonlinearity).
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Reference Resistor: 430Ω, 0.1%.
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Fault Detection: Open circuit, short circuit, voltage range errors.
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Conversion Time: Maximum 21ms.
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Voltage Compatibility: Works with 5V and 3.3V systems (onboard regulator included).
Includes:
- 1 x MAX31865 RTD Amplifier Breakout Board.
- 2 x 2-pin Terminal Blocks.
- 1 x Pin Header for breadboard or perfboard connections.
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Note: RTD sensor (PT100/PT1000) is not included but is available separately.
Applications
- Industrial temperature sensing and monitoring.
- Laboratory precision temperature measurements.
- DIY electronics and IoT projects.
- Automation and embedded systems requiring accurate thermal management.
