Product Overview
The Bently Nevada 330905-05-08-10-12-05 is a 3300 NSv proximity probe designed for precise vibration and position monitoring in rotating machinery. This industrial automation module is part of the trusted 3300 series, offering enhanced chemical resistance compared to earlier models, making it suitable for demanding process compressor applications. The probe is mechanically and electrically interchangeable with previous 3300 RAM probes, simplifying upgrades.
With a 1.0-meter total length and M10X1 thread, this probe delivers reliable performance in a compact form factor. The miniature coaxial ClickLoc connector and FluidLoc cable ensure secure, consistent signal transmission.
Technical Specifications
| Parameter |
Value |
| 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 |
| Probe dc Resistance (1.0 m) |
4.2 ± 0.5 ohms |
| Extension Cable dc Resistance |
Center conductor: 0.220 Ω/m; Shield: 0.066 Ω/m |
| Extension Cable Capacitance |
69.9 pF/m typical |
| Field Wiring |
0.2 to 1.5 mm² (16 to 24 AWG), max 305 m (1000 ft) |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel (SST) |
| Probe Cable |
75 Ω coaxial, FEP insulated, lengths 0.5, 1, 5, or 7 m |
| 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) |
Industry Applications
The Bently Nevada 330905-05-08-10-12-05 excels in applications where reliable vibration monitoring is critical. In process compressors, its enhanced chemical resistance ensures stable operation in harsh environments. For turbines and pumps, the probe's superior side-view characteristics allow accurate gap measurements, reducing installation errors.
This probe is also ideal for axial position monitoring on shafts, where its linear range and scale factor provide dependable data for protective systems. Its compatibility with existing 3300 RAM installations makes it a straightforward replacement.
Installation & Setup Guidance
Proper installation is essential for accurate readings. Use the recommended torque of finger tight for the probe case, and never exceed the maximum torque of 0.56 N•m (5 in•lb). Ensure the minimum bend radius of 25.4 mm (1.0 in) is maintained for the cable, with or without SST armor.
When mounting, verify that the target surface meets the recommended minimum size of 13 mm (0.5 in) diameter for flat targets. For shafts smaller than this, expect a change in scale factor; adjust the gap to mitigate effects. The probe thread engagement should not exceed 15 mm for M10x1 cases.
Maintenance & Reliability
Regular inspection of the probe tip and cable is recommended to prevent damage from environmental factors. The probe is designed to seal differential pressure with a Viton O-ring, but it is not pressure-tested before shipment; if your application requires a pressure seal test, contact the manufacturer's custom design department.
Operating and storage temperatures range from -52°C to +177°C, ensuring reliability in extreme conditions. Periodic checks of cable integrity and connector torque help maintain consistent performance.
Selection Guide & Purchasing Advice
When ordering this Bently Nevada 330905-05-08-10-12-05, verify the unthreaded length (50 mm), overall case length (80 mm), and total length (1.0 m) match your application. The miniature coaxial ClickLoc connector and FluidLoc cable provide a secure connection. Ensure your monitoring system supports the probe's frequency response and linear range.
PLC Source PRO offers new and original factory-packed units with a 12-month warranty, ensuring you receive genuine parts for your critical machinery.