The part number **M2RTS-S-A1F-R2/CE** typically refers to a high-precision **Resistance Temperature Sensor (RTD) Transmitter** from the M2 Series by **M-System** (now MG CO., LTD). These devices are designed to convert signals from a temperature sensor (like a Pt100) into a standard industrial analog signal. --- ### 1. Breakdown of the Part Number The alphanumeric code identifies the specific electrical and mechanical characteristics of the unit: | Segment | Identification | Description | | :--- | :--- | :--- | | **M2RTS** | Series/Model | RTD Transmitter (Plug-in base type) | | **S** | Input Type | Standard RTD (usually Pt 100) | | **A** | Output Signal | 4 to 20 mA DC | | **1** | Power Input | 24V DC | | **F** | Configuration | Fixed Range (Factory set) | | **R2** | Response Time | Standard response (or specific variant) | | **CE** | Certification | European Conformity (CE Marking) | --- ### 2. Core Electronic Specifications This device acts as an interface between raw sensor data and a PLC or SCADA system. * **Input Section:** Designed to interface with 3-wire RTDs (Resistance Temperature Detectors). It compensates for wire resistance to ensure accuracy over long distances. * **Isolation:** Usually features 3-way isolation (Input to Output to Power). This prevents ground loops and protects sensitive control equipment from electrical noise. * **Linearization:** The internal circuitry includes a linearizer that ensures the 4-20mA output is directly proportional to the temperature, not the non-linear resistance of the platinum element. * **Burnout Protection:** Includes a "burnout" function. If the sensor wire breaks, the electronics will drive the output to a specific state (usually >20mA or <4mA) to alert the system of a failure. --- ### 3. Physical & Installation Features * **Housing:** Plug-in style. The electronic module can be removed from the base without disconnecting the wiring, which is critical for maintenance. * **Adjustment:** Small "Zero" and "Span" potentiometers are typically located on the front panel for fine-tuning the calibration. * **Mounting:** Standard DIN rail or wall mounting via the base socket. --- ### 4. Application Use Case In an industrial plant, a **Pt100 sensor** might be inside a high-temperature boiler. Because the millivolt/ohm signal of the sensor degrades over long distances, the **M2RTS** is placed nearby or in a control cabinet to convert that weak signal into a robust **4-20mA current loop**, which can travel hundreds of meters without signal loss. ---