The **VB-DG-R** typically refers to a high-precision **Vibration Sensor** (Velocity Transducer) used in industrial condition monitoring. It is designed to convert mechanical vibrations into an electrical signal, allowing for the monitoring of rotating machinery like turbines, pumps, and fans. --- ### 1. Key Electronic Components & Specifications The internal architecture of the VB-DG-R is centered around electromagnetic induction principles. | Component | Function | | :--- | :--- | | **Inertial Mass** | A suspended weight that moves in response to external vibrations. | | **Inductive Coil** | Attached to the mass; it moves through a magnetic field to generate voltage. | | **Permanent Magnet** | Provides a stable magnetic field for the induction process. | | **Damping System** | Internal fluid or electronic damping to stabilize the frequency response. | | **Signal Conditioner** | Converts the raw induced voltage into a standardized output (e.g., 4-20mA or mV/mm/s). | --- ### 2. Technical Parameters The electronic performance of the VB-DG-R is defined by its sensitivity and output range: * **Sensitivity:** Usually rated at **20mV/mm/s** or **28.5mV/mm/s** (standard for velocity sensors). * **Frequency Response:** Typically ranges from **10Hz to 1000Hz**. * **Measurement Range:** Often spans **0-20mm/s** or **0-50mm/s** (RMS). * **Output Signal:** Can be a low-impedance voltage signal or a 2-wire current loop. * **Supply Voltage:** Usually operates on **+24V DC** (if it includes an integrated transmitter). --- ### 3. Wiring Diagram Logic The sensor usually utilizes a circular aviation plug (e.g., MIL-C-5015) for connection. ```json { "Pin_A": "Power Supply (+) / Signal Out", "Pin_B": "Common (GND) / Signal Return", "Shield": "Case Ground / EM Interference Protection" } ``` --- ### 4. Core Features 1. **Passive vs. Active:** Depending on the specific sub-model, it may be a passive sensor (generating its own voltage) or active (requiring external power to output 4-20mA). 2. **Mounting:** It features a threaded base (typically M10x1.5 or 1/4-28 UNF) to ensure rigid mechanical coupling to the machine. 3. **Durability:** The electronics are usually encapsulated in stainless steel to resist moisture, oil, and dust (IP65/IP67 rating).