The **M2VT-B2-R2/N** is a specific model of a **Compact Signal Conditioner (Transmitter)** manufactured by **M-System**. It is primarily used in industrial automation to convert a V-Network or specific voltage signals into a standard process signal. Below is the detailed breakdown of its electronic components, specifications, and architecture. --- ### 1. Model Code Breakdown Understanding the specific electronic configuration through the model suffix: | Code | Segment | Description | | :--- | :--- | :--- | | **M2VT** | Series | M2-Series Ultra-slim Signal Conditioner | | **B2** | Input | V-Network (Specific input range for this series) | | **R2** | Output | 4 – 20 mA DC (Current output) | | **N** | Power Supply | 24V AC/DC | --- ### 2. Electronic Architecture The device is designed as a **3-port isolated transmitter**. This means the Input, Output, and Power circuits are electrically separated, preventing ground loops and protecting sensitive PLC/DCS equipment. #### A. Input Section * **Circuitry:** High-impedance buffer stage to prevent loading the source signal. * **Function:** It receives the specific voltage signal (B2 configuration) and stabilizes it for the conversion stage. #### B. Conversion & Isolation * **Method:** Optical or Magnetic isolation. * **Processor:** Analog-to-digital (A/D) conversion followed by digital processing to ensure linearity, and then converted back via a Digital-to-analog (D/A) converter for the output stage. * **Response Time:** Typically $\leq 0.5$ seconds (0 to 90%). #### C. Output Section * **Electronic Part:** Constant current drive circuit. * **Range:** 4 – 20 mA DC. * **Load Resistance:** Capable of driving up to 550 $\Omega$. #### D. Power Supply * **Requirement:** 24V DC or 24V AC. * **Protection:** Includes ripple rejection and surge protection to ensure stable operation in noisy industrial environments. --- ### 3. Technical Specifications Table | Feature | Specification | | :--- | :--- | | **Construction** | Plug-in structure (Discrete components on PCB) | | **Isolation** | Input to output to power | | **Zero Adjustment** | -5 to +5% (Front-facing potentiometer) | | **Span Adjustment** | 95 to 105% (Front-facing potentiometer) | | **Isolation Resistance** | $\geq 100$ M$\Omega$ with 500V DC | | **Dielectric Strength** | 2000V AC @ 1 minute | | **Status Indicator** | Front LED (Power/Status) | --- ### 4. Key Electronic Components Inside 1. **Potentiometers:** High-precision trim pots located on the front panel for field calibration of Zero and Span. 2. **Terminal Blocks:** M3 screw terminals for robust physical connection. 3. **Isolation Barrier:** High-voltage optocouplers or transformers to maintain signal integrity across the 2000V AC isolation gap. 4. **Casing:** Flame-resistant resin (Black). ---