MAX31865 PT100-PT1000 RTD Platinum Resistance Temperature Detector Module
5v breakout board, with a 3.3V regulator and level shifting, so you can use it with any Arduino or microcontroller
Support 100Ω to 1kΩ (0°C) platinum resistance RTD (PT100 to PT1000);(The Module resistor uses 430R)
Compatible with 2-wire, 3-wire and 4-wire sensor connections
SPI compatible interface
15-bit ADC resolution with a nominal temperature resolution of 0.03125 °C (variable with RTD nonlinearity)
The total accuracy is maintained at 0.5 ° C (0.05% of full scale) under the entire working conditions
Fully differential VREF input
Conversion time: 21ms (maximum)
Integrated fault detection to increase system stability: (RTD open circuit, RTD short circuit to voltage outside the range or short circuit of RTD components)
The MAX31865 is an easy-to-use thermistor-to-digital output converter optimized for platinum resistance temperature detectors (RTDs).
For precision temperature sensing, nothing beats a MAX31865 RTD Platinum Resistance Temperature Detector Module PT100-PT1000. Resistance temperature detectors (RTDs) are temperature sensors that contain a resistor that changes resistance value as its temperature changes, basically a kind of thermistor.
Compared to most NTC/PTC thermistors, the PT type of RTD is much most stable and precise.
The external resistor sets the RTD sensitivity, and the high precision Δ- Σ ADC converts the ratio of the RTD resistor to the reference resistor into a digital output.
The MAX31865 has overvoltage protection up to ±45V and provides configurable RTD and cable open and short-circuit condition detection.
The MAX31865 handles all of your RTD needs, and can even compensate 3 or 4 wire RTDs for better accuracy. Connect to it with any microcontroller over SPI and read out the resistance ratio from the internal ADC. We put a 430Ω 0.1% resistor as a reference resistor on the breakout.
It has one assembled RTD amplifier breakout board. Also comes with two 2-pin terminal blocks (for connecting to the RTD sensor) and pin header (to plug into any breadboard or perfboard).
