The **M2RT-01-R/K** is a specialized temperature transmitter/signal conditioner module, typically manufactured by **M-System**. This component is designed to convert signals from a Resistance Temperature Detector (RTD) into a standard analog output (such as 4-20mA or 0-10V) for industrial automation systems. --- ### ## Technical Specifications The following table highlights the core electronic characteristics of the M2RT series: | Feature | Specification | | :--- | :--- | | **Input Type** | RTD (Pt100, Pt500, Pt1000, Ni500, etc.) | | **Output Signal** | Configurable (4-20mA DC, 0-10V DC, 1-5V DC) | | **Power Input** | 100 – 240V AC (for -R version) / 24V DC (for -K version) | | **Accuracy** | ±0.1% of span | | **Response Time** | ≤ 0.5 seconds (0 – 90%) | | **Isolation** | 3-way isolation (Input to Output to Power) | | **Mounting** | DIN Rail Mounting | --- ### ### Electronic Components & Functionality 1. **Input Conditioning (RTD Interface):** * The module utilizes a constant current source to excite the RTD sensor. * It features lead-wire resistance compensation, ensuring that the length of the wire between the sensor and the module does not affect temperature accuracy. 2. **Galvanic Isolation:** * The "R/K" designation often refers to the power supply and isolation type. * It uses opto-isolators or magnetic transformers to separate the input, output, and power circuits, protecting sensitive PLC/DCS equipment from high-voltage surges or ground loops. 3. **Linearization Circuitry:** * RTD resistance-to-temperature curves are not perfectly linear. The M2RT-01 contains internal analog or digital processing to linearize the signal, ensuring the output is proportional to the actual temperature. 4. **Burnout Protection:** * The module includes a "burnout" function. If the RTD wire breaks, the electronic circuit forces the output to a specific state (Upscale $\ge$ 20.8mA or Downscale $\le$ 3.8mA) to alert the control system of a hardware failure. --- ### ### Model Suffix Meaning * **M2RT-01**: The base model for RTD input signal conditioning. * **-R**: Indicates a Power Input of **100 – 240V AC**. * **-K**: Indicates a Power Input of **24V DC**.