Product Overview
The Bently Nevada 3300/40 Eccentricity Monitor continuously measures rotor bow, identifying thermal or gravity-induced eccentricity. Moreover, it monitors one eccentricity channel for slow-roll shaft conditions. In addition, it supports both direct and peak-to-peak eccentricity readings, ensuring accurate machinery diagnostics for various rotating and reciprocating equipment.
Key Functional Highlights
- Eccentricity Measurements:
- Direct Eccentricity: Instantaneous shaft offset value.
- Peak-to-Peak Eccentricity: Difference between rotor bow extremes.
- Additional Indications: Gap Voltage and Threshold Voltage (Keyphasor® trigger point).
- Alarm Capability: User-configurable Alert and Danger alarms from 0–100% full-scale.
- Relay Support: At least one relay module is required per 3300 system, enabling alarm outputs.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 3300/40-AXX-BXX-CXX-DXX-EXX |
| Model | 3300/40-13-01-01-00-00 |
| Channels | 1 Eccentricity Channel |
| Inputs | Two proximity probe signals (eccentricity + Keyphasor) |
| Input Impedance | 10 kΩ (eccentricity), 90 kΩ (Keyphasor) |
| Signal Scale Factor | 200 mV/mil (8 V/mm) or 100 mV/mil (4 V/mm), jumper selectable |
| Power Consumption | 1.5 W nominal |
| Frequency Response | Direct: 0–10 Hz, Peak-to-Peak: 0.017–10 Hz |
| Accuracy | ±0.33% typical, ±1% maximum @ +25°C |
| Recorder Outputs | +4 to +20 mA, 0 to -10 Vdc, +1 to +5 Vdc, individually configurable |
| Alarm Setpoints | 0–100% full-scale, digitally adjustable, repeatable ±0.4% |
| Dimensions (HxWxD) | 241 x 24.4 x 241.8 mm |
| Weight | 0.91 kg (2.0 lbs) |
| Certifications | CE Mark, CSA/NRTL/C Class I, Div 2, T4 |
System Integration
The 3300/40 Monitor integrates with the 3300 System, offering real-time eccentricity data for monitoring slow-roll shaft conditions. Moreover, its programmable alarms and relay outputs enable seamless integration into plant monitoring and machinery protection strategies. In addition, the module is compatible with 3300/7200 Proximitors®, ensuring flexibility in existing installations.
Details
| Weight | 1 kg |
|---|
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