Based on your request, the part number **M2RS-51-R2/K** refers to an **M2 Series Super-mini Signal Conditioner** manufactured by **M-System** (now part of MG CO., LTD). This specific device is a **Potentiometer Transmitter**, designed to convert a resistance change from a potentiometer into a standard DC signal. --- ### ## Technical Specifications Breakdown The alphanumeric code provides specific details about the electronic configuration of the unit: | Code Segment | Component Detail | Description | | :--- | :--- | :--- | | **M2RS** | Model Series | Super-mini Signal Conditioner (Potentiometer Input) | | **51** | Configuration | Standard Input / Output isolation | | **R2** | Output Signal | 4 – 20 mA DC (Current Loop) | | **/** | Separator | Transition to auxiliary options | | **K** | Power Input | 85 – 132 V AC (Alternating Current) | --- ### ### Core Electronic Functions 1. **Potentiometer Input:** The unit accepts input from a three-wire potentiometer. It provides a constant excitation voltage to the potentiometer and measures the wiper position (resistance ratio). 2. **Signal Isolation:** It features 3-way isolation (Input to Output to Power). This prevents ground loops and protects sensitive PLC/DCS equipment from electrical surges on the field side. 3. **Linearization:** The internal circuitry ensures that the resistance position of the potentiometer is linearly converted to the corresponding DC output. 4. **Zero/Span Adjustment:** The front panel typically includes multi-turn trimmers for fine-tuning the 0% and 100% calibration points. --- ### ### Wiring and Installation The device is designed for DIN rail mounting and uses a plug-in socket base for easy maintenance. ```text [ Terminal Layout Example ] 1. Output (+) 4-20mA 2. Output (-) 3. Power (L) 120V AC 4. Power (N) 120V AC 5. Input (CW) 6. Input (Wiper) 7. Input (CCW) 8. Ground ``` --- ### ### Key Performance Metrics * **Accuracy:** ±0.1% of span. * **Temperature Coefficient:** ±0.015% per degree Celsius. * **Response Time:** ≤ 0.5 seconds (0 – 90%). * **Dielectric Strength:** 2000V AC @ 1 minute (Input to Output to Power to Ground).