The **M2RTS-R-C3-R2/CE** is a high-precision, industrial-grade RTD (Resistance Temperature Detector) transmitter. It is part of the M2 series manufactured by **M-System**. This device is designed to convert temperature signals from an RTD sensor into a linearized standard DC output. --- ## 1. Technical Specifications Table | Feature | Description | | :--- | :--- | | **Model Series** | M2RTS (Mini-M Series) | | **Input Type** | RTD (Pt 100, JPt 100, etc.) | | **Output Type** | DC Voltage or Current (Configurable) | | **Power Input** | 24V DC | | **Configuration** | Plug-in structure | | **Precision** | ±0.1% of span | | **Isolation** | 3-way (Input to Output to Power) | | **Certification** | CE Marking | --- ## 2. Break-down of the Part Number The alphanumeric suffix indicates the specific electronic hardware configuration: * **M2RTS**: Base model for an RTD Transmitter (Mini-M Series). * **-R**: Power Input code. Typically indicates **24V DC**. * **-C3**: Output Signal code. Represents a specific DC range (often **1 – 5V DC** or **4 – 20mA** depending on factory settings). * **-R2**: Options/Revision code. Often refers to specific terminal types or high-density mounting features. * **CE**: Confirms compliance with European safety, health, and environmental protection standards. --- ## 3. Electronic Architecture & Components The internal electronics are divided into three primary functional blocks: ### A. Input Stage (Signal Conditioning) * **Burnout Protection:** Includes circuits to detect if the RTD wire is broken. It can be set to "Upscale" (max output) or "Downscale" (min output) upon failure. * **Linearization:** Since RTDs are not perfectly linear, the internal microprocessor applies a linearization curve to ensure the output is proportional to the actual temperature. ### B. Isolation Barrier * **Galvanic Isolation:** Uses optoisolators or transformers to separate the input, output, and power circuits. This prevents ground loops and protects sensitive PLC/DCS equipment from high-voltage surges on the sensor side. ### C. Output Stage * **D/A Converter:** Converts the processed digital temperature data back into an analog voltage or current signal. * **Zero/Span Adjustments:** Located on the front panel, these potentiometers allow for fine-tuning the electronic calibration without specialized software. --- ## 4. Key Advantages 1. **Compact Design:** The "Mini-M" footprint saves significant space on DIN rails. 2. **High Reliability:** Designed for 24/7 industrial operation with high MTBF (Mean Time Between Failures). 3. **Low Heat Dissipation:** Efficient electronic design prevents the unit from overheating in tightly packed enclosures.