RAK12022 WisBlock PT100 Module

Thank you for choosing RAK12022 WisBlock PT100 Module in your awesome IoT project! 🎉 To help you get started, we have provided you with all the necessary documentation for your product.

Product Description

RAK12022 is a PT100 IO module that uses MAX31865, an easy-to-use resistance-to-digital converter optimized for platinum resistance temperature detectors (RTDs). An external resistor sets the sensitivity for the RTD being used and a precision delta-sigma ADC converts the ratio of the RTD resistance to the reference resistance into digital form. The MAX31865’s inputs are protected against overvoltage faults as large as 45 V. Programmable detection of RTD and cable open and short conditions is included.

Product Features

Module specifications

Based on MCP2518FD and ATA6563
Compatible with 2-wire, 3-wire, and 4-wire sensor connections
SPI-Compatible Interface
15-Bit ADC Resolution; Nominal Temperature Resolution 0.03125 NC (Varies Due to RTD Nonlinearity)
Total Accuracy Over All Operating Conditions: 0.5 NC (0.05% of Full Scale) max
Fully Differential VREF Inputs
21 ms (max) Conversion Time
Power supply: 3.3 V
Operating Temperature: -40° C ~ 85° C

Prerequisites

To use a RAK12022, you need a WisBlock Base board to plug the module in. WisBlock Base board provides power supply to the RAK12022 module. Furthermore, you need the WisBlock Core module to use the RAK12022.

warning

Make sure to fix the module with screws to ensure proper function.