Adafruit PT1000 RTD Temperature Sensor Amplifier - MAX31865

Key Features: Automatically adjust and compensate for the resistance of the connecting wires Use with any 2, 3 or 4 wire PT1000 RTD (not included) Connect to it with any microcontroller over SPI and read out the resistance ratio from the internal ADC 5V compliant, with a 3.3V regulator and level shifting For precision temperature sensing, nothing beats a Platinum RTD. Resistance temperature detectors (RTDs) are temperature sensors that contain a resistor that changes resistance value as its temperature changes, basically a kind of thermistor.In this resistance sensor, the resistor is actually a small strip of Platinum with a resistance of 1000 ohms at 0°C, thus the name PT1000. You can also use this sensor to measure any kind of variable resistor that has about 1Kohm of resistance (but can range from half to double that)Compared to most NTC/PTC thermistors, the PT type of RTD is much most stable and precise (but also more expensive) PT1000's have been used for many years to measure tem