Description
Bently 3300/40-13-01-01-00-00
Technical Specifications
- Product Series: 3300 Vibration Monitoring System
- Part Number: 3300/40-13-01-01-00-00
- Channel Configuration: Single Channel (Dedicated Eccentricity)
- Input Type: Proximity Probe (Eddy Current)
- Application Type: Slow-Roll Eccentricity / Shaft Bow
Functional Features
- Eccentricity Measurement: Accurately measures the peak-to-peak variation in shaft position during slow-roll conditions.
- Startup/Shutdown Protection: Provides critical protection during the most vulnerable phases of machinery operation.
- Alarm Generation: Generates Alert and Danger alarms to prevent machinery from accelerating to operating speed if excessive bow is detected.
Application Scenarios
Essential for steam turbines, gas turbines, and large compressors to ensure the shaft is within acceptable bow limits before ramping up to full operating speed.
Performance Parameters
- Measurement Range: 0 to 500 µm (0 to 20 mils) Peak-to-Peak
- Frequency Response: 0.1 Hz to 10 Hz (optimized for slow-roll)
- Accuracy: ±1% of full scale
- Output Signal: 4-20 mA buffered output proportional to eccentricity
Material Composition
Heavy-duty steel chassis with gold-plated connectors and conformal-coated internal electronics, ensuring maximum reliability and longevity.
Structural Characteristics
Features a comprehensive front panel with LED indicators for power, normal operation, alert, and danger conditions, along with front-accessible test points.
Working Principle
Monitors the proximity probe signal during slow-roll conditions, filters out high-frequency vibration, and calculates the peak-to-peak eccentricity value for alarm comparison.
Installation Requirements
Install in a properly grounded 3300 series rack. Ensure the probe is installed in a location that accurately reflects shaft bow, typically near a bearing.
Usage Notes
Eccentricity limits must be set according to OEM specifications. Regular verification during scheduled outages is recommended to ensure accurate measurement.
