Based on the model number provided, the **M2RTS-S-BE-R2/N** is a specific configuration of a **RTD Transmitter** (Resistance Temperature Detector) from the **M2 Series** manufactured by **M-System** (now often branded as MG CO., LTD). --- ## 1. Technical Specification Breakdown The alphanumeric code identifies the specific electrical characteristics and functional components of the unit: | Code Segment | Description | Specific Detail | | :--- | :--- | :--- | | **M2RTS** | Model Series | Ultra-slim RTD Transmitter (Plug-in base) | | **S** | Input Signal | RTD (e.g., Pt 100, JPt 100) | | **BE** | Output Signal | **B**: 2 – 10V DC / **E**: 1 – 5V DC (Dual/Specific Output) | | **R2** | Power Input | 11 – 27V DC (Ripple 10% p-p max) | | **N** | Standards/Options | No CE marking (General purpose) | --- ## 2. Key Electronic Components & Functions ### A. Input Section (RTD Interface) * **Sensor Support:** Typically designed for 3-wire RTDs (like Pt100). * **Burnout Protection:** Includes circuitry to detect a broken wire. If the RTD element breaks, the transmitter will drive the output to a specific "upscale" or "downscale" limit to alert the control system. * **Excitation Current:** Provides a small, constant current to the RTD to measure resistance change without causing significant self-heating. ### B. Signal Conditioning & Isolation * **Linearization:** Since RTD resistance changes are not perfectly linear with temperature, the internal electronics apply a linearization curve to ensure the output voltage is proportional to the temperature. * **Isolation:** This unit features **3-way isolation** (Input to Output to Power). This prevents ground loops and protects sensitive PLC/DCS inputs from high-voltage surges on the field side. ### C. Output Stage * **Voltage Generation:** Converts the processed temperature data into a stable DC voltage (1–5V or 2–10V depending on the exact sub-wiring). * **Load Resistance:** Designed to drive high-impedance loads (typically $10k\Omega$ or more for voltage outputs). --- ## 3. Physical & Installation Features * **Form Factor:** Plug-in socket structure. The electronic "head" can be removed from the base without disconnecting the field wiring. * **Adjustments:** Features front-accessible Zero and Span adjustments (potentiometers) for fine-tuning the calibration in the field. * **LED Indicator:** Usually equipped with a Power LED to indicate the DC power status. --- ## 4. Typical Applications * Monitoring motor bearing temperatures. * Industrial furnace temperature sensing. * Interfacing field RTDs with a PLC that only accepts 0-10V or 1-5V analog inputs.