The **PCC420VR-10MM-R6** is a high-performance industrial vibration sensor (accelerometer) manufactured by Wilcoxon Sensing Technologies. It is specifically designed for **Condition Monitoring**, converting mechanical vibration into a standard 4-20 mA analog signal. --- ### 1. Key Technical Specifications The following table outlines the core electronic and physical attributes of the component: | Parameter | Specification | | :--- | :--- | | **Output Type** | 4-20 mA (Proportional to Velocity) | | **Measurement Range** | 0 to 1.0 inches per second (ips) | | **Full Scale Range** | 10 mm/s (Peak or RMS depending on calibration) | | **Frequency Response** | 2 Hz to 2,000 Hz (±10%) | | **Supply Voltage** | 12 to 30 VDC (Loop Powered) | | **Connector Type** | 2-pin, MIL-C-5015 style | | **Operating Temperature** | -40°C to +85°C | | **Housing Material** | 316L Stainless Steel | --- ### 2. Electronic Architecture and Functionality The PCC420VR series functions as a **Loop-Powered Transmitter**. Below is the breakdown of its internal electronic stages: 1. **Piezoelectric Sensing Element**: At the core, a ceramic crystal generates a small charge proportional to acceleration when the machine vibrates. 2. **Internal Integrator**: Unlike standard accelerometers that output voltage, this model includes an internal integrator circuit that converts the *acceleration* signal into a *velocity* signal (mm/s). 3. **True RMS or Peak Conversion**: The electronics process the raw vibration signal to calculate the RMS (Root Mean Square) value, providing a representative measure of the vibration energy. 4. **4-20 mA Current Loop**: The signal is converted into a current output. * **4 mA** = Zero vibration (0 mm/s). * **20 mA** = Maximum rated vibration (10 mm/s). --- ### 3. Wiring and Integration Because it uses a 4-20 mA loop, it is highly resistant to electromagnetic interference (EMI) over long cable runs. ```yaml # Typical Wiring Diagram Logic Loop(+) -> Red Wire / Pin A -> Positive Terminal (12-30 VDC) Loop(-) -> White Wire / Pin B -> Input Channel of PLC/DCS (Load Resistor) Ground -> Shield/Case -> Earth Ground ``` --- ### 4. Applications The "R6" variant typically refers to specific mounting or casing requirements used in: * **Motors and Pumps**: Monitoring bearing health and imbalance. * **Fans/Blowers**: Detecting blade wear or misalignment. * **PLC/SCADA Integration**: Direct connection to industrial control systems without needing expensive vibration modules.