The **M2RTS-S-43-R2/N** is a specific part number typically associated with the **M2RTS Series** of compact, high-precision remote terminal units or signal conditioners, often manufactured by companies like **M-System**. This device is designed for industrial automation to monitor and transmit temperature or analog signals over a network or to a control system. --- ## 1. Part Number Breakdown While specific manufacturer codes can vary slightly, here is the standard breakdown for this series: | Code Segment | Description | Specific Detail | | :--- | :--- | :--- | | **M2RTS** | Series Model | RTD Transmitter / Remote Terminal | | **S** | Input Type | RTD (Resistance Temperature Detector) | | **43** | Output Type | 4 to 20 mA DC (Standard Industrial Loop) | | **R2** | Power Input | 100 – 240V AC (Standard Mains) | | **N** | Standards/Options | Typically refers to CE marking or specific terminal types | --- ## 2. Key Electronic Specifications The internal electronics are designed for high stability and interference rejection in harsh industrial environments. * **Input Section:** Supports 3-wire RTDs (e.g., Pt100). It includes lead-wire resistance compensation to ensure accuracy over long distances. * **Isolation:** Features 3-way isolation between **Input – Output – Power**. This prevents ground loops and protects sensitive PLC/DCS inputs from high-voltage surges. * **Output:** Linearized 4-20mA current loop. The electronics convert the non-linear resistance of the RTD into a linear current signal. * **Accuracy:** Typically ±0.1% of span, ensuring high-fidelity data for process control. --- ## 3. Physical & Connection Layout The device is usually housed in a "Mini-M" style plug-in socket base for easy DIN-rail mounting. ### Terminal Configuration Example | Terminal No. | Function | | :--- | :--- | | **1 & 2** | Control Output (+) and (-) | | **3 & 4** | Power Supply Input | | **5, 6, 7** | RTD Input (A, B, b) | --- ## 4. Typical Applications * **HVAC Systems:** Monitoring ambient or duct temperatures. * **Manufacturing:** Measuring process heat in chemical or food processing. * **Energy Management:** Relaying temperature data from remote sensors back to a centralized SCADA system. ---