Product Overview
The Bently Nevada 330905-05-08-10-02-05 is a 3300 NSv proximity probe engineered for precise shaft vibration and position monitoring in critical rotating machinery. This industrial automation module delivers reliable, repeatable measurements in demanding environments, including process compressors where chemical resistance is essential.
As part of the 3300 NSv series, the 330905-05-08-10-02-05 offers improved chemical resistance over previous 3300 RAM probes, making it ideal for sour gas and other aggressive media. Its side-view characteristics outperform the 3000-series 190 probe when gapping at the same distance, ensuring accurate readings even in tight installations.
Key Features & Benefits
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Enhanced durability: Polyphenylene sulfide (PPS) probe tip and AISI 304 stainless steel case withstand harsh conditions.
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Wide temperature range: Operates from -52°C to +177°C (-62°F to +351°F), suitable for extreme environments.
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High linearity: Deviation from best fit straight line is less than ±0.06 mm (±2.3 mils), ensuring accurate measurements.
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Extended cable length: Supports up to 305 meters (1,000 feet) of field wiring without significant signal loss.
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Interchangeable design: Mechanically and electrically compatible with previous 3300 RAM probes, simplifying upgrades.
Technical Specifications
| Parameter |
Value |
| Unthreaded Length |
50 mm |
| Overall Case Length |
80 mm |
| Total Length |
1.0 meter (39 in) |
| Connector Type |
Miniature coaxial ClickLoc connector, standard cable |
| Agency Approvals |
Multiple Approvals |
| Probe DC Resistance (1.0 m) |
4.2 ± 0.5 ohms |
| Extension Cable DC Resistance (Center) |
0.220 Ω/m (0.067 Ω/ft) |
| Extension Cable DC Resistance (Shield) |
0.066 Ω/m (0.020 Ω/ft) |
| Extension Cable Capacitance |
69.9 pF/m (21.3 pF/ft) typical |
| Linear Range |
1.5 mm (60 mils) from 0.25 to 1.75 mm (10 to 70 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 (with 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 |
| Probe Cable |
75 Ω coaxial, FEP insulated (0.5, 1, 5, or 7 m lengths) |
| Recommended Torque |
Finger tight; max 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) |
| Probe Case Thread |
M10x1, max engagement 15 mm |
| Probe Case Torque (M10X1, first three threads) |
Max 22.6 N•m (200 in•lb); recommended 7.5 N•m (66 in•lb) |
Applications
The 330905-05-08-10-02-05 excels in radial vibration and axial position monitoring on turbomachinery, pumps, and compressors. Its enhanced chemical resistance makes it a top choice for process compressor applications where exposure to corrosive gases is common. The probe's superior side-view characteristics ensure reliable gap measurements even in confined spaces, reducing installation errors.
Use this probe with Bently Nevada 3300 XL NSv Proximitor sensors to build a complete monitoring system. The included 1-meter cable with ClickLoc connector simplifies installation and provides a secure connection.
Installation & Setup
Install the 330905-05-08-10-02-05 with the recommended torque of finger tight (max 0.56 N•m) to avoid damaging the threads. Ensure the target surface is clean and meets the minimum size requirements (8.9 mm diameter). For axial measurements on shafts smaller than 13 mm, adjust the gap to minimize scale factor changes.
Follow the frequency response graphs (Figures 16 and 17) when using field wiring longer than 305 meters, as signal rolloff may occur at high frequencies. Use a three-conductor shielded triad cable with 0.2 to 1.5 mm² conductors for optimal performance.
Maintenance & Reliability
The probe's all-stainless steel case and PPS tip resist corrosion and wear, minimizing maintenance needs. Regularly inspect the cable and connector for damage, and verify the probe gap during scheduled outages. The extended temperature range and robust construction contribute to long service life, reducing total cost of ownership.
Compatibility & Integration
The 330905-05-08-10-02-05 is mechanically and electrically interchangeable with Bently Nevada's previous 3300 RAM probes, simplifying retrofits. It works seamlessly with 3300 XL NSv Proximitor sensors and is compatible with Bently Nevada monitoring systems. The ClickLoc connector ensures a secure, quick connection to extension cables.
Selection Guide & Purchasing Advice
Before ordering, verify your required total length, thread type, and connector configuration. The 330905-05-08-10-02-05 includes a 1.0-meter cable and M10x1 thread without armor. If your application demands armored cable or different lengths, contact PLC Source PRO for assistance.
All units are new and original in factory packing, backed by a 12-month warranty. Choose PLC Source PRO for genuine parts, fast shipping, and expert support.