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Product Introduction
The Bently Nevada 330704-005-040-10-01-00 3300 XL 11 mm Proximity Probe is a high-precision non-contact sensor designed for vibration and displacement measurement in rotating machinery. As part of the Bently Nevada 3300 XL series, this probe delivers outstanding reliability and performance in harsh industrial environments such as turbines, compressors, motors, and pumps. Using advanced eddy current sensing technology, it detects the position and motion of metallic targets, providing real-time feedback for machine condition monitoring and protection systems.
The 330704-005-040-10-01-00 model combines a rugged stainless steel probe tip with a highly stable coaxial cable and connector assembly to ensure long-term durability and accuracy. It is typically used together with a 3300 XL Proximitor Sensor to form a complete transducer system, offering linear, calibrated output proportional to the target’s displacement. The probe’s precision, high temperature stability, and strong resistance to interference make it suitable for critical machinery applications that require dependable, continuous monitoring.
Technical Specifications
| Parameter | Description |
|---|---|
| Model | Bently Nevada 330704-005-040-10-01-00 |
| Series | 3300 XL 11 mm Proximity Probe |
| Sensing Principle | Eddy Current (non-contact displacement measurement) |
| Nominal Sensitivity | 200 mV/mil (7.87 mV/μm) |
| Linear Range | 2.0 mm (80 mils) |
| Usable Measurement Range | 0.25 to 2.25 mm |
| System Compatibility | 3300 XL Proximitor Sensor and extension cable |
| Standard Calibration Material | AISI 4140 steel |
| Frequency Response | DC to 10 kHz (±3 dB) |
| Temperature Range (Probe) | -35°C to +177°C |
| Temperature Coefficient | < 0.1%/°C typical |
| Probe Tip Diameter | 11 mm |
| Cable Type | Coaxial, double-shielded |
| Mounting Thread | M14 × 1.5 |
| Electrical Isolation | Probe tip isolated from case |
| Compliance | API 670, CE, CSA, ATEX (when used with approved systems) |
| Weight | 0.17 kg |
| Total Length | 1.0 meter |
Product Applications
The Bently Nevada 330704-005-040-10-01-00 is widely used in industrial condition monitoring systems to provide continuous vibration and displacement feedback for machinery protection. Common application fields include:
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Steam and gas turbines: Detecting shaft vibration, eccentricity, and axial position.
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Compressors and pumps: Monitoring rotor movement, mechanical imbalance, and misalignment.
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Electric motors and generators: Tracking bearing condition and shaft displacement.
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Gearboxes and fans: Measuring rotational shaft behavior to prevent mechanical failures.
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Critical process equipment: Providing early warning of wear, thermal expansion, or structural distortion.
This probe ensures high accuracy and reliability in both dynamic and static measurements, enabling predictive maintenance strategies and improved machine uptime.
Product Advantages
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High measurement precision: Advanced eddy current sensing technology provides accurate readings of shaft motion and position with minimal drift.
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Wide temperature and environmental tolerance: Operates reliably in high-temperature and vibration-intensive environments.
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Superior linearity and repeatability: Designed to maintain consistent calibration accuracy across the entire measuring range.
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Robust construction: Stainless steel probe body and double-shielded coaxial cable ensure durability and electrical integrity.
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Excellent noise immunity: Shielding and grounding design minimize electromagnetic interference, ensuring stable signal output.
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Easy integration: Fully compatible with existing Bently Nevada monitoring systems and standard Proximitor units.
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Maintenance-free operation: Non-contact sensing eliminates physical wear and reduces service requirements.
FAQ
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What sensing principle does the 330704-005-040-10-01-00 probe use?
It uses an eddy current sensing method, where an alternating magnetic field interacts with a conductive surface to measure vibration and displacement. -
Which Proximitor Sensor is compatible with this probe?
This probe is compatible with the 3300 XL Proximitor Sensor, forming a calibrated transducer system for precise shaft displacement monitoring. -
What is the system output sensitivity?
The probe and Proximitor system provide an output of 200 mV/mil (7.87 mV/μm), ensuring accurate signal conversion. -
What materials are suitable as target surfaces for this probe?
It is calibrated for AISI 4140 steel, which is standard. When used with other conductive materials, minor scaling adjustments may be needed. -
How does the probe ensure accuracy under high temperatures?
The probe uses temperature-compensated materials and a stable circuit design to minimize signal drift from -35°C to +177°C. -
Can the probe detect both static and dynamic motion?
Yes, it measures static position (shaft growth or movement) and dynamic vibration (imbalance or misalignment). -
What installation conditions are critical for accurate performance?
The probe should be installed perpendicular to the target, maintaining a proper gap within its linear range and ensuring solid grounding. -
How does the system handle electromagnetic interference?
The probe features a double-shielded coaxial cable, effectively preventing noise and signal distortion in harsh electrical environments. -
What is the usable frequency range for vibration monitoring?
It supports frequencies from DC to 10 kHz, suitable for high-speed rotating machinery applications. -
Does the probe meet industrial safety and performance standards?
Yes, it fully complies with API 670 and meets CE, CSA, and ATEX standards when used within approved systems.
Related Models (Same Series)
| Model | Description |
|---|---|
| 330704-000-040-10-02-05 | 11 mm proximity probe, short version, standard calibration |
| 330704-005-040-10-02-00 | 11 mm probe, medium length, high-temperature resistant |
| 330704-010-070-10-01-00 | Extended-range probe for turbine applications |
| 330704-015-120-10-01-00 | Long-range probe for compressors and large motors |
| 330703-000-100-10-02-00 | 3300 XL 11 mm standard proximity probe, short cable |
| 330703-005-040-10-01-00 | Compact probe for confined installation environments |
Popular Bently Nevada Models
| Model | Description |
|---|---|
| 3500/42M | Proximitor/Seismic Monitor for machine protection |
| 3500/22M | Transient Data Interface Module |
| 3300 XL 8 mm | Proximity probe series for general vibration monitoring |
| 330103-00-12-10-02-00 | 8 mm probe with high linearity for compact systems |
| 330780-51-00 | Proximitor Sensor for 3300 XL system |
| 330130-040-00 | Standard 8 mm proximity probe for rotor vibration measurement |
