Compact Precision Sensor for Reliable Machinery Protection
The Bently Nevada 330903-00-21-10-02-05 3300 NSv Proximity Probe is a high-accuracy, non-contact eddy-current sensor designed for continuous vibration and shaft position monitoring in compact and high-speed rotating machinery. As part of the advanced 3300 NSv (Narrow Side View) family, this probe is engineered to operate reliably in environments where installation space is restricted and conventional proximity probes may not fit or perform optimally.
The NSv architecture is widely used in OEM machinery and retrofit applications, offering stable signal performance, reduced side-view interference, and consistent measurement accuracy even in mechanically dense installations. This makes it a trusted solution for predictive maintenance systems in critical industrial operations.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330903-00-21-10-02-05 |
| Product Type | 3300 NSv Proximity Probe |
| Measurement Technology | Eddy current, non-contact |
| Thread Type | M8 × 1 metric |
| Unthreaded Length | 0 mm |
| Case Length | 210 mm |
| Total Cable Length | 1.0 m (39 in) |
| Connector Type | Miniature ClickLoc coaxial connector |
| Cable Type | 75 Ω FEP insulated coaxial cable |
| Housing Material | AISI 304 stainless steel |
| Probe Tip Material | PPS (Polyphenylene Sulfide) |
| Operating Temperature | -52°C to +177°C |
| Frequency Response | 0–10 kHz |
| System Type | 3300 NSv transducer system component |
| Approx. Weight | ~0.3 kg (varies by configuration) |
Typical Industrial Applications
This probe is widely deployed in machinery condition monitoring systems, including:
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Centrifugal compressors
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Process gas compressors
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Steam turbines
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Gas turbines
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Turbo-expanders
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High-speed industrial pumps
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Refrigeration compressors
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Air separation units
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OEM packaged rotating equipment
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Continuous predictive maintenance systems
Its extended case length makes it suitable for installations requiring deeper mounting reach or specific mechanical alignment constraints.
Key Advantages
◆ Extended Case Design for Flexible Installation
The 210 mm configuration provides additional mounting adaptability in deeper or constrained housings.
◆ Narrow Side View (NSv) Technology
Reduces interference from nearby metallic structures, improving measurement stability.
◆ High-Accuracy Non-Contact Measurement
Delivers reliable vibration and shaft position data without mechanical wear.
◆ Rugged Industrial Construction
Stainless steel body ensures durability in harsh operating environments.
◆ Stable Signal Integrity
75 Ω coaxial cable design supports consistent, low-noise signal transmission.
◆ Predictive Maintenance Ready
Enables early detection of mechanical issues before failure occurs.
◆ OEM & Retrofit Friendly
Well-suited for both new equipment integration and legacy system upgrades.
Technical FAQs
Q1: What does this probe measure?
It measures shaft vibration and radial displacement without physical contact.
Q2: What is NSv technology?
NSv stands for Narrow Side View, designed to reduce interference from surrounding metal structures.
Q3: What does “21” in the model number indicate?
It represents a longer case length configuration (210 mm).
Q4: What is the cable length?
This model includes a 1.0-meter integrated coaxial cable.
Q5: What is the mounting standard?
It uses an M8 × 1 metric threaded mounting system.
Q6: What industries typically use this probe?
Oil & gas, petrochemical, power generation, refrigeration, and general industrial rotating equipment monitoring.
Q7: Is it suitable for high-speed machinery?
Yes, it is designed for high-speed rotating assets requiring stable dynamic measurement.
Q8: Can components be mixed with other systems?
No, probe, extension cable, and Proximitor sensor must be properly matched as a system.
Q9: What is the main benefit of the longer body design?
It provides additional mechanical reach for deeper installation points.
Q10: What maintenance is recommended?
Routine inspection of cable integrity, mounting stability, and system calibration checks.
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