Compact Metric Probe for Precision Machinery Protection
The Bently Nevada 330903-00-02-05-02-CN 3300 NSv Proximity Probe is a compact, metric-threaded, non-contact vibration sensor engineered for rotating machinery that operates in restricted installation spaces. As a member of the 3300 NSv (Narrow Side View) family, this probe is optimized to minimize side interference from adjacent metallic surfaces while maintaining accurate shaft vibration and position measurements. The 3300 NSv series is specifically designed for compressors, turbines, and high-speed equipment with tight clearances.
Built for continuous industrial operation, this probe supports predictive maintenance initiatives by helping maintenance teams identify equipment abnormalities before they escalate into costly failures. Its compact metric design also makes it a popular choice for OEM systems and retrofit projects.
Configuration & Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330903-00-02-05-02-CN |
| Product Type | 3300 NSv Proximity Probe |
| Product Family | 3300 NSv |
| Measurement Technology | Eddy Current Non-Contact Sensing |
| Thread Type | M8 × 1 Metric Thread |
| Armor Configuration | Without Armor |
| Unthreaded Length | 0 mm |
| Overall Case Length | 20 mm |
| Total Cable Length | 0.5 m |
| Connector Type | Miniature Coaxial ClickLoc Connector |
| Cable Type | Standard 75 Ω FEP Insulated Cable |
| Housing Material | AISI 304 Stainless Steel |
| Probe Tip Material | Polyphenylene Sulfide (PPS) |
| Measurement Sensitivity | 7.87 V/mm (±12.5% tolerance) |
| Linear Measurement Range | 1.5 mm |
| Recommended Probe Gap | 1.0 mm (40 mils) |
| Frequency Response | 0 to 10 kHz |
| Operating Temperature | -52°C to +177°C |
| Dimensions | 20 mm probe body + 0.5 m cable assembly |
| Approximate Weight | 0.12 kg |
| Compliance Option | CN Configuration |
Ideal Industrial Applications
This compact proximity probe is commonly installed in:
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Centrifugal air compressors
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Process gas compressors
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Industrial refrigeration compressors
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Turbo-expanders
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Compact gas turbines
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High-speed pumps
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Air separation units
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Small steam turbines
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OEM machinery packages
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Continuous machine condition monitoring systems
Key Product Advantages
◆ Ultra-Compact Metric Design
The 20 mm body length allows installation in extremely confined machinery spaces.
◆ Narrow Side View Technology
Reduces interference from adjacent metal surfaces for improved measurement stability.
◆ Accurate Machine Health Data
Provides reliable shaft vibration and shaft position measurements for predictive maintenance programs.
◆ Rugged Industrial Construction
304 stainless steel housing and PPS sensing tip deliver excellent durability and chemical resistance.
◆ Excellent Retrofit Compatibility
Its compact dimensions simplify equipment modernization projects.
◆ Stable Signal Performance
The 75 Ω cable architecture maintains dependable signal integrity over long-term operation.
◆ Supports 24/7 Continuous Operation
Designed for mission-critical industrial machinery environments.
Technical FAQs
Q1: What is the primary purpose of this probe?
It continuously measures shaft vibration and shaft position without physically contacting rotating components.
Q2: What does NSv stand for?
NSv stands for Narrow Side View, a design that minimizes interference from nearby metal structures.
Q3: What does the "02" configuration represent?
It indicates a 20 mm overall case length.
Q4: Is this a metric probe?
Yes. The 330903 series uses an M8 × 1 metric thread design.
Q5: How long is the integrated cable?
This configuration includes a 0.5-meter cable assembly.
Q6: What does the CN suffix indicate?
CN identifies a regional compliance and approval configuration.
Q7: Is this probe suitable for small machinery?
Yes. It was specifically developed for equipment with limited installation clearances.
Q8: Can components from different NSv systems be mixed?
No. Probe, extension cable, and Proximitor sensor components must always be properly matched as a complete transducer system.
Q9: What installation practice is most important?
Ensure the sensing face is reading the shaft target rather than nearby mounting hardware.
Q10: What maintenance is recommended?
Regularly inspect cable integrity, verify mounting security, and validate probe gap settings during scheduled maintenance.
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