The **W2RS-6D2-R2/Q** is a high-precision, isolated signal conditioner (transducer) manufactured by **M-System** (now part of MG CO., LTD). It is part of the W2-unit series, designed for dual-output applications where a single input signal needs to be split and converted into two independent, isolated output signals. --- ### 1. Key Technical Specifications The model code follows a specific nomenclature. Here is the breakdown of the electronic parameters for this specific variant: | Feature | Specification | Description | |:---|:---|:---| | **Input (6)** | 1 – 5V DC | High impedance voltage input. | | **Output 1 (D)** | 0 – 20mA DC | Current output (Load resistance max. 600Ω). | | **Output 2 (2)** | 0 – 100mV DC | Low-voltage output (Load resistance min. 10kΩ). | | **Power Supply (R2)** | 11 – 27V DC | Standard DC power requirement. | | **Option (/Q)** | Special Options | Indicates custom factory settings or coating. | | **Configuration** | 2-output Transmitter | Splits 1 input into 2 isolated outputs. | --- ### 2. Functional Electronic Components Internally, the device consists of several critical electronic stages to ensure signal integrity and safety: #### A. Input Conditioning Stage * **Operational Amplifiers:** High-precision op-amps handle the 1-5V input signal. They provide high input impedance to ensure the source signal is not "loaded down" or distorted. * **Filtering:** Low-pass filters are integrated to suppress high-frequency noise from industrial environments. #### B. Galvanic Isolation * **Three-Way Isolation:** This is the core electronic feature. It provides electrical separation between: 1. Input vs. Output 1 vs. Output 2 2. Input vs. Power Supply 3. Outputs vs. Power Supply * **Mechanism:** Typically uses **Optical Isolators** (optocouplers) or **Transformer Isolation** to prevent ground loops and protect sensitive PLC/DCS equipment from high-voltage surges. #### C. Output Drive Circuitry * **Output 1 (Current Loop):** Utilizes a voltage-to-current converter to maintain a steady 0-20mA regardless of load fluctuations (up to 600Ω). * **Output 2 (Voltage):** Uses a precision divider and buffer to provide the 0-100mV signal, ensuring low output impedance. --- ### 3. Physical & Installation Features * **Housing:** Compact, plug-in socket structure. * **Adjustments:** Front-mounted **Zero** and **Span** adjustments (potentiometers) for fine-tuning both outputs independently. * **Mounting:** Designed for DIN rail mounting via a base socket (often the 10-pin type). --- ### 4. Application Use Case This part is commonly used when a sensor (like a pressure transmitter sending 1-5V) needs to be monitored by two different systems simultaneously—for example, a **Local Display** (using the 0-100mV signal) and a **Remote PLC** (using the 0-20mA signal)—without the two systems interfering with each other electronically.