Precision Proximity Measurement for Compact Industrial Machinery
The Bently Nevada 330901-05-55-05-11-05 3300 NSv Proximity Probe is a compact eddy-current proximity sensing solution engineered for machinery with limited installation space and small shaft diameters. As part of the 3300 NSv Series, this probe system is optimized for applications where standard 8 mm proximity probes cannot be installed due to restricted mechanical clearances.
The 330901-05-55-05-11-05 configuration combines a miniature probe tip with a high-performance Proximitor system to deliver accurate shaft vibration and position measurements in demanding industrial environments. Its compact sensing geometry allows installation in tight bearing housings, small compressors, auxiliary turbines, pumps, and other compact rotating equipment while maintaining the measurement accuracy expected from Bently Nevada machinery protection products.
Designed for continuous online monitoring, the 3300 NSv probe system supports predictive maintenance programs by detecting shaft vibration, eccentricity, runout, and position changes before they develop into serious machinery problems. The rugged stainless-steel construction and industrial-grade cable assembly provide reliable long-term operation in harsh process environments.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330901-05-55-05-11-05 |
| Product Type | 3300 NSv Proximity Probe |
| Series | 3300 NSv |
| Measurement Principle | Eddy Current Proximity Measurement |
| Probe Tip Diameter | 5 mm |
| Probe Body Thread | 3/8-24 UNF |
| Unthreaded Length Option | 55 |
| Total Probe Length | 5.0 m System Length |
| Cable Armor Option | Standard Industrial Cable |
| Connector Option | Miniature ClickLoc Connector |
| Compatible Proximitor | 3300 NSv Proximitor Sensor |
| Measurement Output | Shaft Vibration and Position |
| Linear Measurement Range | Approximately 1.5 mm (59 mils) |
| Static Sensitivity | 7.87 V/mm (200 mV/mil) |
| Frequency Response | 0 to 10 kHz |
| Probe Material | Stainless Steel |
| Operating Temperature (Probe) | -35°C to +177°C |
| Operating Temperature (Cable) | -35°C to +177°C |
| Probe Dimensions | Approx. 5 mm tip diameter × 38 mm body length |
| Weight | Approximately 0.18 kg (complete probe assembly) |
Typical Applications
The 330901-05-55-05-11-05 is specifically designed for rotating equipment where installation space is extremely limited and conventional proximity probes cannot be accommodated.
Typical applications include:
- Small centrifugal compressors
- Auxiliary steam turbines
- Compact gas turbines
- High-speed pumps
- Small electric motors
- Gearboxes with restricted access
- Process control equipment
- Laboratory rotating machinery
- OEM packaged equipment
- Turbomachinery with narrow bearing housings
- Test stands and development rigs
- Retrofit vibration monitoring projects
Its miniature probe geometry enables accurate shaft displacement measurements without requiring major mechanical modifications, making it particularly valuable for retrofit installations and compact OEM equipment.
Key Advantages
The 3300 NSv Series is designed for applications where compact size and dependable measurement performance are equally important.
Key benefits include:
- Miniature 5 mm probe tip for tight installation spaces
- High measurement sensitivity despite compact size
- Accurate shaft vibration and position monitoring
- Excellent frequency response for dynamic machinery analysis
- Rugged stainless-steel probe construction
- Reliable operation in industrial environments
- Suitable for continuous online monitoring
- Compatible with Bently Nevada 3300 NSv monitoring systems
- Simplifies retrofits on compact machinery
- Supports predictive maintenance and machinery protection programs
Technical FAQs
1. What is the primary purpose of the 330901-05-55-05-11-05?
It measures shaft vibration and shaft position on compact rotating machinery using eddy-current proximity sensing technology.
2. What makes the 3300 NSv Series different from standard 3300 XL probes?
The NSv Series uses a smaller 5 mm probe tip and compact body, allowing installation in machinery with limited mechanical clearance.
3. What is the probe tip diameter?
The probe tip diameter is 5 mm.
4. What measurement range does the probe provide?
The typical linear measurement range is approximately 1.5 mm (59 mils).
5. Which Proximitor sensor is compatible with this probe?
It is designed for use with the 3300 NSv Proximitor Sensor.
6. What operating temperature can the probe withstand?
The probe and cable are rated for continuous operation from -35°C to +177°C.
7. Is this probe suitable for continuous online monitoring?
Yes. It is designed for permanent installation in continuous machinery condition monitoring systems.
8. What industries commonly use the 3300 NSv probe?
It is widely used in oil & gas, petrochemical processing, power generation, OEM turbomachinery, and industrial rotating equipment applications.
9. What are the approximate dimensions and weight?
The probe has an approximate 5 mm tip diameter, a body length of about 38 mm, and a complete assembly weight of approximately 0.18 kg.
10. Why choose the 330901-05-55-05-11-05?
Its compact design, high measurement accuracy, reliable industrial construction, and compatibility with Bently Nevada monitoring systems make it an excellent solution for machinery with restricted installation space.
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