Product Overview
The Bently Nevada 330904-08-10-10-02-00 is a precision 3300 NSv proximity probe designed for reliable vibration and position monitoring in critical rotating machinery. This industrial automation module delivers accurate displacement measurements in harsh environments, making it a trusted choice for process compressors and other demanding applications.
As part of the 3300 NSv series, this probe offers enhanced chemical resistance and superior side-view characteristics compared to earlier models. The 330904-08-10-10-02-00 is mechanically and electrically compatible with previous 3300 RAM probes, ensuring seamless integration into existing monitoring systems.
Key Features & Benefits
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High Accuracy: Incremental Scale Factor (ISF) of 7.87 V/mm (200 mV/mil) with interchangeability error of +12.5%/-20%.
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Wide Linear Range: 1.5 mm (60 mils) from 0.25 to 1.75 mm (10 to 70 mils) for dependable measurements.
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Chemical Resistance: Polyphenylene sulfide (PPS) probe tip and AISI 304 stainless steel case withstand aggressive media.
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Extended Temperature Range: Operates from -52°C to +177°C (-62°F to +351°F), suitable for extreme conditions.
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Flexible Cable Options: Available with 75 Ω coaxial FEP-insulated cable in lengths of 0.5, 1, 5, or 7 meters.
Technical Specifications
| Parameter |
Value |
| Probe DC Resistance (1.0 m) |
4.2 ± 0.5 Ω |
| Linear Range |
1.5 mm (60 mils) |
| 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 (up to 305 m field wiring) |
| Minimum Target Size |
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 |
| Operating Temperature |
-52°C to +177°C (-62°F to +351°F) |
| Storage Temperature |
-52°C to +177°C (-62°F to +351°F) |
| Maximum Torque |
0.56 N•m (5 in•lb) |
| Minimum Bend Radius |
25.4 mm (1.0 in) |
Real-World Applications
The 330904-08-10-10-02-00 excels in vibration monitoring and axial position measurement for turbomachinery, compressors, and pumps. Its enhanced chemical resistance makes it ideal for process compressor applications where exposure to corrosive media is common.
In a typical setup, the probe mounts near a rotating shaft, and the Proximitor sensor converts the gap change into a DC voltage signal. This signal is then processed by a monitoring system to detect shaft vibration, thrust position, or eccentricity. The high linearity and repeatability of this probe ensure reliable data for predictive maintenance programs.
Installation & Setup Guidance
Proper installation is critical for accurate readings. Follow these guidelines:
- Mount the probe with the recommended torque of 0.56 N•m (5 in•lb) (finger tight) to avoid damaging the threads.
- Ensure the target surface is flat and meets the minimum size requirement (8.9 mm diameter) to maintain scale factor accuracy.
- Use a three-conductor shielded triad cable for field wiring, with lengths up to 305 meters (1,000 feet).
- Set the initial gap to the recommended 1.0 mm (40 mils) for optimal performance within the linear range.
- Verify the probe cable bend radius does not exceed 25.4 mm (1.0 in) to prevent cable damage.
Maintenance & Reliability
This probe is designed for long service life with minimal maintenance. However, periodic inspection of the probe tip and cable for wear or contamination is advisable, especially in harsh environments. The PPS tip and stainless steel case resist most chemicals, reducing the risk of degradation.
Because the probe is not pressure tested before shipment, if your application involves differential pressure, contact the custom design department to arrange a pressure seal test. Regular calibration checks ensure continued accuracy and help prevent costly downtime.
Compatibility & Integration
The 330904-08-10-10-02-00 is compatible with Bently Nevada 3300 XL NSv Proximitor sensors and monitoring systems. It is also mechanically and electrically interchangeable with the previous 3300 RAM probe, making it a drop-in replacement for many existing installations.
The probe uses a miniature coaxial ClickLoc connector and standard cable, simplifying wiring. The system supports field wiring lengths up to 305 meters (1,000 feet) without significant signal degradation, as detailed in the frequency response characteristics.
Selection Guide & Purchasing Advice
When ordering the 330904-08-10-10-02-00, verify the following options match your requirements: unthreaded length (80 mm), overall case length (100 mm), total length (1.0 meter), and connector type (miniature coaxial ClickLoc). These parameters are fixed for this part number.
For additional technical support or to confirm compatibility with your existing system, contact our team. PLC Source PRO is a trusted supplier of genuine Bently Nevada components, ensuring original factory packaging and a 12-month warranty.