Product Overview
The Bently Nevada 330904-05-14-05-02-05 is a high-performance 3300 NSv proximity probe designed for reliable vibration and position monitoring in critical rotating machinery. Part of the trusted 3300 series, this probe delivers accurate, repeatable measurements even in demanding process environments. With its M8X1 threaded case and armored construction, the 330904-05-14-05-02-05 is built to withstand harsh conditions while maintaining signal integrity.
This model features a 50 mm unthreaded length, a 140 mm overall case length, and a 0.5 meter (20 inch) total length with a miniature coaxial ClickLoc connector. The probe is factory-packed and comes with a 12-month warranty, ensuring genuine Bently Nevada quality and performance.
Key Features & Benefits
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Enhanced Chemical Resistance: The NSv probe design offers superior chemical resistance compared to the previous 3300 RAM probe, making it ideal for process compressor applications.
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Interchangeable Compatibility: Mechanically and electrically compatible with the earlier 3300 RAM probe and extension cable, simplifying upgrades.
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Precise Linear Range: 1.5 mm (60 mils) linear range with recommended gap setting of 1.0 mm (40 mils) for accurate measurements.
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Robust Construction: Probe tip made of polyphenylene sulfide (PPS) and case of AISI 304 stainless steel for durability.
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Wide Temperature Tolerance: Operates from -52°C to +177°C (-62°F to +351°F), suitable for extreme environments.
Technical Specifications
| Parameter |
Value |
| Probe DC Resistance (0.5 m length) |
4.0 ± 0.5 ohms |
| Linear Range |
1.5 mm (60 mils) from 0.25 to 1.75 mm |
| Recommended Gap Setting |
1.0 mm (40 mils) |
| Incremental Scale Factor (ISF) |
7.87 V/mm (200 mV/mil) +12.5%/-20% |
| Deviation from Best Fit Straight Line (DSL) |
Less than ±0.06 mm (±2.3 mils) |
| Frequency Response |
0 to 10 kHz: +0, -3 dB typical |
| Target Size (flat target) |
Minimum: 8.9 mm (0.35 in) diameter; Recommended: 13 mm (0.5 in) |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel |
| Cable Type |
75 Ω coaxial, FEP insulated |
| Maximum Torque |
0.56 N•m (5 in•lb) |
| Minimum Bend Radius |
25.4 mm (1.0 in) |
| Operating Temperature |
-52°C to +177°C (-62°F to +351°F) |
| Storage Temperature |
-52°C to +177°C (-62°F to +351°F) |
Industry Applications
The 330904-05-14-05-02-05 excels in vibration monitoring and shaft position measurement for turbomachinery, compressors, pumps, and motors. Its enhanced chemical resistance makes it particularly suitable for process compressor applications where exposure to aggressive media is common. The probe's superior side-view characteristics ensure accurate gap measurements even in tight installations, reducing the risk of false readings.
In a typical application, the probe is mounted near a rotating shaft to measure radial vibration or axial position. The linear range of 1.5 mm provides ample measurement span, while the recommended gap setting of 1.0 mm ensures optimal sensitivity. The 0.5 meter cable length suits installations where the probe connects directly to a Proximitor sensor without excessive cable routing.
Installation & Setup
Proper installation is critical for optimal performance. Follow these guidelines:
- Mount the probe using the M8X1 thread. Use finger-tight torque initially, then tighten to a maximum of 0.56 N•m (5 in•lb).
- Ensure the probe tip is positioned at the recommended gap of 1.0 mm from the target surface.
- For axial position measurements on shafts smaller than 13 mm (0.5 in) diameter, expect a change in scale factor. Reduce the gap to help limit this change.
- Route the cable with a minimum bend radius of 25.4 mm to avoid damage.
- Connect the ClickLoc connector securely to the extension cable or Proximitor sensor.
Maintenance & Reliability
The 330904-05-14-05-02-05 requires minimal maintenance due to its rugged construction. Regularly inspect the probe tip for contamination or damage, especially in harsh environments. The PPS tip resists chemical attack, but physical abrasion can occur. Check the cable for cuts or kinks, and verify that the connector remains tight.
With a wide operating temperature range and sealed design, this probe delivers long service life. The Viton O-ring seals differential pressure between the tip and case, preventing ingress of process media. For applications requiring pressure testing, contact our custom design department.
Compatibility & Integration
The 330904-05-14-05-02-05 is fully compatible with Bently Nevada's 3300 XL NSv Proximitor sensors and extension cables. It can be used with existing 3300 series monitoring systems, ensuring seamless integration into legacy installations. The probe's electrical characteristics are matched to the Proximitor, providing accurate signal conditioning.
Field wiring between the Proximitor and monitor should use a three-conductor shielded triad cable, with a maximum length of 305 meters (1,000 feet). For longer runs, refer to the frequency response graphs to understand signal rolloff at high frequencies.
Selection Guide
When selecting a replacement probe, verify that the part number matches your requirements. The 330904-05-14-05-02-05 includes the M8X1 thread with armor, 50 mm unthreaded length, 140 mm case length, 0.5 meter total length, and miniature coaxial ClickLoc connector. Confirm the agency approval option (05 – Multiple Approvals) meets your regulatory needs.
PLC Source PRO offers this genuine Bently Nevada probe in new, original factory packaging. With a 12-month warranty, you can trust the authenticity and performance of this component. For assistance with selection or integration, contact our knowledgeable team.