The **M2RTS-R-DG-M2** belongs to the M2 Series of signal conditioners manufactured by **M-System**. This specific model is a **Resistance Thermometer Transmitter** (RTD Transmitter) designed to convert signals from a temperature sensor into a standard industrial DC signal. --- ### ## Technical Specifications Breakdown The alphanumeric code defines the specific hardware configuration of the unit: | Component Code | Description | Details | | :--- | :--- | :--- | | **M2RTS** | Model Name | RTD Transmitter (Plug-in base) | | **-R** | Power Input | 24V DC (Standard industrial power) | | **-DG** | Output Type | **D:** 0 – 20 mA DC / **G:** 0 – 5 V DC (Dual output available) | | **-M2** | Input Type | Pt 100 (ITS-90) platinum resistance thermometer | --- ### ### Key Electronic Features 1. **Isolation Structure:** * The unit provides **three-way isolation** (Input to Output to Power). * This prevents ground loops and protects sensitive PLC/DCS equipment from high-voltage surges or noise originating at the sensor. 2. **Burnout Protection:** * Equipped with a "Burnout" feature. If the RTD wire breaks, the transmitter can be configured to drive the output to a maximum (Upscale) or minimum (Downscale) value to alert the control system of a sensor failure. 3. **Linearization:** * RTDs are slightly non-linear. The internal circuitry of the M2RTS includes linearizing circuits to ensure the DC output is strictly proportional to the temperature, not the resistance. 4. **Hardware Form Factor:** * **Plug-in Base:** The electronic module can be removed from its base without disconnecting the wiring, allowing for easy maintenance or replacement. --- ### ### Wiring Diagram Overview | Terminal | Function | | :--- | :--- | | **1 - 2 - 3** | RTD Input (3-wire system to compensate for lead-wire resistance) | | **4 - 5** | DC Output 1 | | **6 - 7** | DC Output 2 (If applicable) | | **8 - 9** | Power Supply (24V DC) | ---