Bently Nevada 3300/55 Dual Velocity Monitor - Technical Overview
1. Product Introduction
The 3300/55 Dual Velocity Monitor is a core component of Bently Nevada’s Asset Condition Monitoring portfolio, designed for continuous, real-time vibration monitoring of industrial machinery. It delivers two independent channels of velocity-based vibration measurement, enabling early detection of faults (e.g., imbalance, misalignment, bearing wear) in rotating equipment such as turbines, pumps, and motors.
2. Key Functionalities
2.1 Vibration Sensing & Compatibility
Transducer Support: Directly interfaces with Bently Nevada’s Velomitor® transducers, High Temperature Velomitor Systems (HTVS), and Velocity Seismoprobe® transducers—no additional interface modules required.
Dual-Channel Monitoring: Simultaneously tracks vibration data from up to two transducers, providing redundant or multi-point coverage for critical machinery.
2.2 Configuration Flexibility
User-Selectable Options: Features field-reprogrammable settings (via plug-in jumpers) for:
High-pass/low-pass filter frequencies
Alarm/danger threshold levels
Signal conditioning parameters
On-Device Visualization: Front-panel meters display real-time vibration amplitude for each channel, with status LEDs (OK, ALERT, DANGER, BYPASS) for at-a-glance system health assessment.
3. Application Considerations
3.1 Measurement Efficacy for Machine Protection
For reliable machinery protection, consider the following:
Rotor vs. Housing Vibration: Most machinery faults (imbalance, misalignment) originate in the rotor. Ensure housing-mounted transducers effectively transmit rotor vibration to the monitoring point.
Transducer Installation: Improper mounting can degrade frequency response or generate false signals. Bently Nevada offers engineering services to validate transducer placement and measurement suitability.
3.2 Front-Panel Status & Alarms
Indicator | Function |
OK | Confirms normal vibration levels (below alarm thresholds). |
ALERT | Triggers when vibration exceeds user-defined warning levels. |
DANGER | Activates for critical vibration (requires immediate action). |
BYPASS | Indicates a channel is temporarily disabled (e.g., during maintenance). |
4. Technical Specifications (Typical)
Input Signals: 24 V DC-powered transducer inputs (compatible with Velomitor/HTVS/Seismoprobe series).
Environmental Tolerance: Operates in industrial temperatures (-20°C to +65°C) and humidity (5–95% non-condensing).
Certifications: Compliant with industrial EMC/EMI standards (e.g., EN 61000-6-2/4) for use in harsh factory environments.
For detailed wiring diagrams, calibration procedures, or customization support, consult Bently Nevada’s official 3300/55 datasheet or technical support team.
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