The **M2RTS-R-3B-R2/N** is a specific model within the **M2RTS series**, which are high-performance, ultra-slim signal conditioners (transmitters) manufactured by **M-System**. This particular unit is designed to convert signals from a Resistance Temperature Detector (RTD) into a standard DC output. --- ### 1. Model Breakdown (Nomenclature) The part number can be broken down into its functional components: | Segment | Code | Description | | :--- | :--- | :--- | | **Series** | **M2RTS** | Ultra-slim RTD Transmitter (potentiometer adjustable) | | **Input** | **R** | RTD (e.g., Pt100, Pt1000, Cu10, etc.) | | **Output** | **3B** | 1 – 5V DC (Output 1) & 4 – 20mA DC (Output 2) *[See Note]* | | **Power Supply** | **R2** | 11 – 27V DC | | **Option** | **N** | None (Standard configuration) | *Note: In the M2RTS series, the "3" usually denotes a 1–5V DC output, and "B" indicates a specific secondary characteristic or standard output configuration depending on the exact regional datasheet.* --- ### 2. Key Electronic Features The M2RTS-R is an analog-based signal conditioner known for its reliability and high-density mounting capabilities. * **Three-Way Isolation:** The device provides 2000V AC isolation between the **Input**, **Output**, and **Power** terminals. This prevents ground loops and protects sensitive PLC/DCS equipment from electrical surges. * **Burnout Protection:** It includes a burnout control circuit. If the RTD wire breaks, the output will go to a predefined safety limit (typically upscale/above 100% or downscale). * **Linearization:** The internal circuitry performs electronic linearization to ensure the output voltage/current is proportional to the temperature, not the non-linear resistance of the RTD. * **Adjustment:** Front-accessible Zero and Span adjustments (trimmer potentiometers) allow for fine-tuning the calibration in the field. --- ### 3. Technical Specifications | Feature | Specification | | :--- | :--- | | **Input Signal** | 3-wire RTD (Pt 100 typical) | | **Supply Voltage** | 24V DC (Operational range 11 – 27V DC) | | **Isolation Resistance** | 100 MΩ minimum at 500V DC | | **Dielectric Strength** | 2000V AC @ 1 minute | | **Accuracy** | ±0.1% of span | | **Response Time** | ≤ 0.5 seconds (0 – 90%) | | **Mounting** | DIN Rail | --- ### 4. Connection Diagram (Simplified) Below is the typical wiring logic for this electronic module: ```text [ RTD INPUT ] [ POWER ] [ OUTPUT ] Terminal 1 (A) <--- + 24V DC ---> Terminal 4 (+) Terminal 2 (B) <--- - 0V DC ---> Terminal 5 (-) Terminal 3 (B) ```