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Product Introduction
The Bently Nevada 330905-00-06-50-12-00 3300 NSv Proximity Probe is a high-precision non-contact displacement and vibration sensor designed for critical machinery monitoring and protection. As part of the 3300 NSv (Narrow Side View) series, this probe is engineered for installations requiring extended cable lengths without compromising signal integrity or measurement accuracy. Its advanced eddy-current technology provides real-time detection of shaft vibration and positional changes, allowing early fault detection and predictive maintenance for turbines, compressors, pumps, motors, and other rotating equipment. The probe features a robust stainless-steel body with hermetic sealing, ensuring durability and consistent performance in harsh industrial environments with extreme temperature and environmental conditions.
Technical Specifications
| Parameter | Description |
|---|---|
| Model Number | 330905-00-06-50-12-00 |
| Series | 3300 NSv Proximity Probe |
| Total Length | 5 meters |
| 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 330905-00-06-50-12-00 proximity probe is widely used in industries requiring precise vibration and displacement monitoring for high-value rotating machinery:
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Steam and Gas Turbines – Continuous shaft position and vibration monitoring to prevent imbalance and misalignment.
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Compressors and Pumps – Early detection of bearing wear, cavitation, and mechanical looseness.
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Motors and Generators – Provides accurate rotor dynamics measurement for predictive maintenance programs.
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Gearboxes and Fans – Monitors gear mesh and mechanical looseness for stable and reliable operation.
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OEM Machinery – Designed for integration in large-scale machinery where long cable lengths are required.
Advantages
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High Measurement Accuracy – Eddy-current sensing ensures precise and reliable displacement and vibration readings.
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Extended Cable Capability – 5-meter integral cable maintains signal integrity for remote installations.
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Compact NSv Design – Narrow Side View construction allows installation in tight or confined spaces.
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Rugged Construction – Stainless steel housing and hermetic sealing protect against moisture, dust, and corrosive environments.
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Seamless Integration – Fully compatible with Bently Nevada 3300 series monitoring systems for straightforward installation and calibration.
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Low Maintenance – Non-contact operation eliminates mechanical wear and reduces downtime.
FAQ
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Which target material ensures optimal calibration accuracy?
Factory calibration is done for AISI 4140 steel; other ferromagnetic materials may require recalibration. -
What is the maximum extension supported beyond the 5-meter cable?
Extensions up to 9 meters are supported with a compatible proximitor and extension cables. -
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 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 this probe measure both vibration and static shaft position?
Yes, it provides simultaneous dynamic and static measurement signals. -
What is the recommended minimum bend radius for installation?
A minimum bend radius of 25 mm is recommended to protect cable integrity. -
Is recalibration required under normal operation?
Recalibration is generally only necessary after system reconfiguration or replacement of components. -
Is the probe resistant to electromagnetic interference (EMI)?
Yes, the coaxial cable design and internal shielding provide excellent EMI resistance. -
Is it compatible with older Bently Nevada monitoring systems?
Yes, when used with the correct proximitor and following proper 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 |
