Description
The RAK12022 is a PT100 sensor IO module that uses the MAX31965 resistance to digital converter. It is optimized for platinum resistance temperature detectors. The module supports 2-wire, 3-wire and 4-wire PT100 sensors and has an SPI interface. It extends the WisBlock temperature sensor series with an industrial temperature sensor.
We offer this module with an PT100 sensor, but if you want to use your own sensors, you can order the module without sensor as well.
Features
- Based on MAX31965
- Compatible with 2-, 3-, and 4-Wire Sensor Connections
- SPI-Compatible Interface
- 15-Bit ADC Resolution; Nominal Temperature Resolution 0.03125NC (Varies Due to RTD
- Nonlinearity)
- Total Accuracy Over All Operating Conditions: 0.5NC (0.05% of Full Scale) max
- Fully Differential VREF Inputs
- 21ms (max) Conversion Time
- Power supply: 3.3 V
- Operating Temperature: -40° C ~ 85° C
- Module size 25x35mm
Specifications:
| Module Name |
MAX31865 PT100 Temperature Sensor Module (RAK12022) |
| Chipset |
MAX31865 RTD-to-Digital Converter |
| Sensor Type |
PT100 Platinum Resistance Temperature Detector (RTD) |
| Supported Wiring |
2-wire, 3-wire, 4-wire PT100 |
| Interface |
SPI |
| ADC Resolution |
15-bit |
| Temperature Resolution |
0.03125 °C (nominal) |
| Accuracy |
±0.5 °C (0.05% Full Scale max) |
| Conversion Time |
≤ 21 ms |
| Reference Input |
Fully differential VREF |
| Overvoltage Protection |
Up to 45 V |
| Operating Voltage |
3.3 V |
| Operating Temperature |
−40 °C to +85 °C |
| Module Size |
25 × 35 mm |
| System Compatibility |
WisBlock Core and Base required |
| Applications |
Industrial monitoring, instrumentation, medical equipment, IoT temperature sensing |
| Package Option |
With or without PT100 sensor |
