Based on your inquiry, the part number **M2AC-A4A-R2/CE** refers to a specific configuration of a **Signal Conditioner** (specifically a Transducer or Isolator) manufactured by **M-System** (now part of MG CO., LTD). ### 1. Component Overview This device is a **Potentiometer Transmitter**. Its primary function is to measure the position of a potentiometer (slidewire) and convert that resistance value into a standard instrumentation signal (like 4-20mA or 0-10V). --- ### 2. Breakdown of Part Number (Specifications) | Segment | Meaning | Specification Details | | :--- | :--- | :--- | | **M2AC** | **Model Series** | Mini-M Series Signal Conditioner (Plug-in type) | | **A4A** | **Input/Output** | Configured for specific Volts/Amps (see below) | | **R2** | **Power Supply** | 11–27V DC | | **CE** | **Certification** | CE Marking (European Conformity) | #### Technical Details for "A4A" Configuration: * **Input (A):** Potentiometer (Total resistance 100 Ω to 10 kΩ). * **Output (4):** 0 – 10V DC. * **Aux. Output (A):** Usually denotes a standard 4-20mA DC current loop or a specific voltage variant depending on the sub-revision. --- ### 3. Key Electronic Characteristics * **Isolation:** This unit provides 3-way isolation (Input to Output to Power). This prevents ground loops and protects sensitive PLC/DCS inputs from high-voltage surges on the sensor side. * **Mounting:** Designed for a **DIN rail** socket (M2-type). * **Response Time:** Typically $\leq$ 0.5 seconds (0 to 90%). * **Accuracy:** $\pm$0.1% of span. * **Adjustment:** Features front-facing Zero and Span adjustment trimmers to calibrate the mechanical position of the potentiometer to the electrical output. --- ### 4. Connection Diagram (Simplified) ```text Input (Potentiometer) Signal Conditioner Output Signal [ Terminals 1, 2, 3 ] ----> [ M2AC-A4A-R2 ] ----> [ Terminals 4, 5 ] | [ Terminals 7, 8 ] Power Input ``` --- ### 5. Application Example You would use this part if you have a **motorized valve** or a **linear position sensor** that uses a 5kΩ potentiometer to report its position. The M2AC converts that variable resistance into a stable 0-10V signal that a computer or controller can easily read.