The **M2RTS-S-D2-R2/CE** is a high-precision, industrial-grade RTD (Resistance Temperature Detector) transmitter manufactured by **M-System**. It is designed to convert signals from a temperature sensor (like a Pt100) into a standard DC output signal. Below is a detailed breakdown of its electronic specifications and characteristics based on the model nomenclature. --- ### 1. Model Code Breakdown The alphanumeric string defines the specific electronic configuration of the unit: | Code Segment | Description | Details | | :--- | :--- | :--- | | **M2RTS** | Series Name | Ultra-slim signal conditioner (RTD Transmitter) | | **S** | Input Type | RTD (Standard Pt100, Pt50, JPt100, etc.) | | **D2** | Output 1 | 4 – 20 mA DC (Load resistance 550 $\Omega$ max.) | | **R2** | Output 2 | 4 – 20 mA DC (Load resistance 550 $\Omega$ max.) | | **CE** | Certification | CE marking compliant (European safety standards) | --- ### 2. Key Electronic Specifications The internal electronics are designed for isolation and high-speed processing. * **Power Input:** Usually 24V DC (Universal variations may exist, but M2 series often utilizes DC). * **Isolation Structure:** 3-way isolation (Input to Output to Power). This prevents ground loops and protects sensitive PLC/DCS equipment. * **A/D Conversion:** Utilizes high-resolution analog-to-digital conversion to ensure temperature linearity. * **Burnout Protection:** Includes a burnout feature (Upscale or Downscale) that forces the output to a specific limit if the sensor wire breaks. --- ### 3. Connection Diagram (General) The unit typically features a plug-in base for easy wiring. | Terminal No. | Function | Description | | :--- | :--- | :--- | | **1 - 2** | Power Supply | 24V DC (+ / -) | | **3 - 4** | Output 1 | 4-20mA Signal | | **5 - 6** | Output 2 | 4-20mA Signal (Independent) | | **7 - 8 - 9** | Input | RTD Sensor (A, B, B' wires) | --- ### 4. Technical Features * **Response Time:** Approximately $\leq$ 0.5 seconds (0 to 90%). * **Accuracy:** Typically $\pm$ 0.1% of span. * **Temperature Coefficient:** $\pm$ 0.015% / °C. * **Mounting:** DIN rail mounting (Slim profile saves cabinet space). ---