The **M2RS-10-R2/CE** is a high-performance, plug-in type **RTD (Resistance Temperature Detector) Transmitter** manufactured by **M-System**. It is designed to take a resistance signal from an RTD sensor (like a Pt100) and convert it into a standard DC output signal (like 4-20mA or 0-10V). --- ### 1. Technical Specifications | Feature | Specification Details | | :--- | :--- | | **Model Series** | M2 (Mini-M) Series | | **Input Type** | RTD (Pt 100, Pt 50, Ni 508.4, etc.) | | **Output Type** | Specify code (e.g., A: 4–20 mA, V: 0–10 V) | | **Power Input (R2)** | 100 – 240 V AC | | **Accuracy** | ±0.1% of span | | **Response Time** | ≤ 0.5 seconds (0 – 90%) | | **Isolation** | 3-way isolation (input to output to power) | | **Construction** | Plug-in base socket mount | --- ### 2. Breakdown of the Model Code The alphanumeric string defines the specific electronic configuration of the unit: * **M2RS**: Model family (RTD Transmitter). * **10**: Specifies the input type (Standard Pt 100, 3-wire). * **R2**: Power supply code (100–240V AC). * **CE**: Certification mark (Conforms to European Health, Safety, and Environmental standards). --- ### 3. Key Electronic Features #### A. Three-Way Isolation The device features galvanic isolation between the **input**, **output**, and **power supply**. This is critical in industrial environments to: * Prevent ground loops. * Protect sensitive PLC/DCS inputs from high-voltage surges. * Reduce electronic noise interference. #### B. Burnout Protection The electronic circuit includes a "Burnout" function. If the RTD wire breaks, the transmitter can be configured to drive the output signal to a maximum (Upscale) or minimum (Downscale) value to alert the control system of a sensor failure. #### C. Linearization RTD sensors are slightly non-linear. The internal circuitry of the M2RS-10 performs **linearization**, ensuring that the output DC signal is perfectly proportional to the temperature, not just the raw resistance. --- ### 4. Typical Wiring Diagram (Conceptual) ```mermaid graph LR A[RTD Sensor] -- 3-wire -- B(Transmitter Input) C[AC Power 100-240V] -- Power -- B B -- 4-20mA / 0-10V -- D[PLC / Controller] ``` ---