Description
Bently 3300/12-22-02
Technical Specifications
- Product Series: 3300 Vibration Monitoring System
- Part Number: 3300/12-22-02
- Channel Configuration: Dual Channel
- Input Type: Proximity Probe (Eddy Current)
- Mounting: Standard 3300 Rack Mount
Functional Features
- Dual Channel Monitoring: Simultaneously monitors two independent vibration parameters, optimizing rack space and system cost.
- High Precision Measurement: Accurately measures peak-to-peak vibration amplitude, providing reliable data for machinery health assessment.
- Alarm Generation: Features independent Alert and Danger alarm setpoints for each channel to trigger protective relays or DCS alerts.
Application Scenarios
Widely deployed in steam turbines, gas turbines, compressors, fans, and motors to monitor radial shaft vibration and detect mechanical anomalies such as unbalance, misalignment, or bearing wear.
Performance Parameters
- Measurement Range: 0 to 500 µm (0 to 20 mils) Peak-to-Peak
- Frequency Response: 10 Hz to 10 kHz
- Accuracy: ±1% of full scale
- Output Signal: 4-20 mA buffered outputs proportional to vibration amplitude
Material Composition
The module features a robust steel chassis with a durable front panel, while internal components utilize high-grade industrial electronic components designed for long-term stability in harsh environments.
Structural Characteristics
Designed as a standard single-width rack module, it features front-panel LED indicators for status, alarm, and bypass conditions, along with front-accessible test points and calibration potentiometers.
Working Principle
The module receives high-frequency signals from the proximity probe system, demodulates the RF signal to extract the vibration waveform, and calculates the peak-to-peak amplitude. It then compares this value against user-defined alarm thresholds to generate appropriate outputs.
Installation Requirements
Must be installed in a compatible 3300 series rack. Proper grounding of the rack and signal cables is mandatory to ensure signal integrity and EMI immunity.
Usage Notes
Alarm setpoints must be configured based on API 670 or ISO 10816 standards. Regular calibration and functional testing are recommended during scheduled maintenance outages to ensure system reliability.
