The **M2RTS-S-AE-R/N** belongs to the **M2RTS series**, which are high-performance temperature transmitters manufactured by **M-System** (now part of MG CO., LTD). These devices are used to convert resistance temperature detector (RTD) signals into standard industrial DC signals. --- ### ## Technical Specifications Overview Below are the primary electronic and functional characteristics of the M2RTS-S-AE-R/N: | Feature | Specification Details | | :--- | :--- | | **Model Type** | RTD Transmitter (Programmable) | | **Input Signal** | RTD (Pt 100, JPt 100, Pt 50, etc.) | | **Output Signal (AE)** | 4 – 20 mA DC (Current Loop) | | **Power Input (R)** | 24V DC | | **Connection (N)** | Screw terminal connection | | **Accuracy** | ±0.1% of span | | **Response Time** | ≤ 0.5 seconds (0 – 90%) | --- ### ### Component Breakdown and Electronic Parts #### 1. Signal Input Stage (RTD Interface) The device is designed to interface with 2-wire, 3-wire, or 4-wire RTDs. * **Burnout Protection:** The electronic circuit includes a burnout detection feature. If the sensor wire breaks, the output will go to an upper limit (Upscale) or lower limit (Downscale) based on configuration to prevent system damage. * **Excitation Current:** The transmitter provides a constant low-level current to the RTD to measure resistance without causing self-heating errors. #### 2. Signal Conditioning & Isolation The "M2" series is known for its **isolation** capabilities. * **Galvanic Isolation:** It provides 3-way isolation between the **Input**, **Output**, and **Power supply**. This prevents ground loops and protects sensitive PLC/DCS inputs from high-voltage surges. * **A/D Converter:** The analog signal from the RTD is converted into a high-resolution digital signal for precise processing. #### 3. Power Supply Section (Suffix -R) * **Voltage:** Rated for 24V DC. * **Internal Regulation:** Uses internal DC-DC converters to step down and stabilize voltage for the internal logic circuits and the isolation barriers. #### 4. Output Stage (Suffix -AE) * **Current Output:** This specific model provides a 4–20 mA DC output. * **Load Resistance:** Capable of driving loads up to 550 $\Omega$. --- ### ### Physical Configuration The unit is a **Plug-in** style module, meaning the electronic housing can be removed from the base without disconnecting the wiring, which is critical for maintenance in industrial environments. * **Housing Material:** Flame-resistant resin (Black). * **Installation:** DIN rail mounting. * **Adjustments:** Zero and Span adjustments are typically located on the front panel for fine-tuning. ---