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Product Introduction
The Bently Nevada 330905-00-12-05-02-RU 3300 NSv Proximity Probe is a high-precision, non-contact vibration and displacement sensor designed for critical machinery monitoring and protection. Part of the 3300 NSv (Narrow Side View) series, this model provides accurate shaft position and vibration measurement in installations with limited space, while ensuring reliable long-term performance. Using advanced eddy-current technology, it offers real-time detection of shaft vibration and displacement, supporting early fault detection and predictive maintenance. Its robust stainless-steel construction and hermetic sealing make it ideal for harsh industrial environments, including turbines, compressors, pumps, and large electric motors, providing consistent performance under extreme operating conditions.
Technical Specifications
| Parameter | Description |
|---|---|
| Model Number | 330905-00-12-05-02-RU |
| Series | 3300 NSv Proximity Probe |
| Total Length | 0.5 meter |
| Weight | 0.15 kg |
| Sensing Principle | Eddy current, non-contact displacement measurement |
| Tip Diameter | 5 mm (nominal) |
| Linear Range | 0.25 mm to 2.0 mm (material dependent) |
| Sensitivity | 7.87 V/mm ±5% |
| Frequency Response | 0 to 10 kHz (typical) |
| Operating Temperature | –35 °C to +177 °C |
| Probe Material | Hermetically sealed stainless steel |
| Insulation Resistance | >10 MΩ at 500 VDC |
| Power Requirement | Requires compatible Bently Nevada proximitor |
| Connector Type | Standard Bently Nevada miniature coaxial |
| Mounting Thread | M10 × 1.0 or 3/8-24 UNF (varies by configuration) |
| Compliance | CE, RoHS, and ATEX certified for hazardous areas |
Applications
The 330905-00-12-05-02-RU probe is commonly used in industries requiring precise shaft vibration and displacement monitoring for critical rotating machinery:
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Steam and Gas Turbines – Monitors axial displacement and vibration to prevent imbalance and misalignment.
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Compressors and Pumps – Detects early-stage bearing wear, cavitation, and mechanical looseness.
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Motors and Generators – Provides accurate rotor dynamics tracking for predictive maintenance.
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Gearboxes and Industrial Fans – Monitors gear mesh irregularities and shaft vibration for reliable operation.
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OEM Machinery – Compact design allows installation in restricted spaces and custom machinery.
Advantages
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High Accuracy – Advanced eddy-current sensing ensures precise and stable measurements.
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Compact NSv Design – Narrow Side View construction allows installation in tight or confined spaces.
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Durable Construction – Stainless steel housing with hermetic sealing protects against dust, moisture, and corrosive environments.
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Seamless System Integration – Compatible with Bently Nevada 3300 series monitoring systems for easy setup and calibration.
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Wide Operating Temperature – Reliable performance from –35 °C to +177 °C in harsh industrial conditions.
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Low Maintenance – Non-contact design eliminates mechanical wear and reduces downtime.
FAQ
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Which target material is optimal for calibration?
Factory calibration is done for AISI 4140 steel; other ferromagnetic materials may require recalibration. -
What is the maximum cable extension supported?
Extensions up to 9 meters are supported when paired with a compatible proximitor. -
Can this probe be used in hazardous environments?
Yes, it meets ATEX and CE Zone 1 requirements when installed with certified accessories. -
How does temperature variation affect measurement accuracy?
Integrated temperature compensation minimizes signal drift across the full operating range. -
What is the typical output sensitivity when connected to a proximitor?
Standard output is 200 mV per mil (7.87 V/mm) with ±5% tolerance. -
Does the probe provide both dynamic vibration and static shaft position measurements?
Yes, it delivers simultaneous vibration and displacement signals. -
What is the minimum recommended bend radius during installation?
A minimum bend radius of 25 mm is recommended to maintain cable integrity. -
Is periodic recalibration required?
Calibration is generally only necessary after major system reconfiguration or component replacement. -
Is the probe shielded against electromagnetic interference (EMI)?
Yes, coaxial cable and internal shielding provide excellent EMI resistance. -
Is it compatible with older Bently Nevada monitoring systems?
Yes, when used with the correct proximitor and calibration procedures.
Related Models in the Same Series
| Model | Description |
|---|---|
| 330904-08-15-10-02-05 | NSv probe, 1 m cable length |
| 330904-00-10-10-01-05 | Standard NSv probe with 1 m cable |
| 330905-00-05-50-02-00 | Long cable NSv probe, 5 m integral cable |
| 330904-05-14-05-02-00 | NSv probe, 0.5 m cable length |
| 330909-00-05-05-02-00 | High-temperature NSv probe |
| 330930-040-01-00 | Extended linear range NSv probe for larger shafts |
Popular Bently Nevada Models
| Model | Application |
|---|---|
| 3500/22M | Rack Interface Module for advanced machine monitoring |
| 330105-02-12-10-02-00 | Standard proximity probe for general industrial use |
| 330400 | High-performance accelerometer for vibration detection |
| 330500 | Velocity transducer for rotating equipment |
| 330780-91-05 | Proximitor sensor for precision displacement monitoring |
| 3500/42M | Advanced vibration monitor with diagnostics |
