The **M2RTS-S-DF-R2/CE** is a high-performance **Resistance Temperature Detector (RTD) Transmitter** manufactured by **M-System**. It is designed to convert signals from an RTD sensor into a standard industrial DC signal. --- ### 1. Key Technical Specifications The part number suffix typically denotes specific configurations for power, input/output, and certification. | Feature | Specification | | :--- | :--- | | **Model Type** | Ultra-slim Signal Conditioner (M2 Series) | | **Input** | RTD (Pt 100, JPt 100, etc.) | | **Output** | DC Current or Voltage (User specified) | | **Power Input (R2)** | 110V - 120V AC | | **Housing** | Plug-in base / Ultra-slim design | | **Accuracy** | ±0.1% of span | | **Isolation** | 3-way isolation (Input to Output to Power) | | **Certification (CE)** | Conformité Européenne (Meets EU safety/EMC standards) | --- ### 2. Electronic Component Breakdown The device consists of several critical internal stages to ensure signal integrity: #### A. Input Conditioning Circuit * **Burnout Protection:** Detects if the RTD wire is broken and drives the output to a pre-defined safety level (High or Low). * **Linearization:** RTD resistance change is non-linear relative to temperature. This circuit linearizes the signal to provide an accurate output. #### B. Isolation Stage * **Galvanic Isolation:** Uses internal transformers or optoisolators to separate the input, output, and power circuits. This prevents ground loops and protects sensitive PLC/DCS equipment from high-voltage surges. #### C. Power Supply Section (R2) * The **R2** designation indicates an AC power requirement (110V/120V). It includes internal rectification and regulation to provide stable DC power to the internal processing chips. --- ### 3. Application Use Cases This specific transmitter is used in industrial automation environments where temperature precision is critical: 1. **Chemical Processing:** Monitoring reactor temperatures using Pt100 sensors. 2. **HVAC Systems:** Integrating temperature data into Building Management Systems (BMS). 3. **Power Plants:** Measuring steam or cooling water temperatures with high isolation requirements. --- ### 4. Connection Diagram (General) The unit typically uses a plug-in base for easy maintenance without disconnecting wires. ```text [ RTD Sensor ] ----> [ Input Terminals ] | [ M2RTS Transmitter ] <---- [ 110V AC Power ] | [ PLC / Controller ] <--- [ Output (4-20mA / 1-5V) ] ```