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 temperature in laboratory and industrial processes, and have developed a reputation for accuracy (better than thermocouples), repeatability, and stability.

However, to get that precision and accuracy out of your PT1000 RTD you must use an amplifier that is designed to read the low resistance. Better yet, have an amplifier that can automatically adjust and compensate for the resistance of the connecting wires. If you're looking for a great RTD sensor, today is your lucky day because we have a lovely Adafruit RTD Sensor Amplifier with the MAX31865 breakout for use with any 2, 3 or 4 wire PT1000 RTD!

Item Specifics
1 - Breakout board
2 - 2-pin Terminal Block
1 - Pin header
Dimensions: 28.0mm x 25.0mm x 2.4mm / 1.1" x 1.0" x 0.1"
Weight: 2.6g / 0.1oz
PT1000 RTD sensor required but NOT included.