Product Overview
When machinery vibration threatens uptime, the Bently Nevada 330905-00-12-05-02-00 3300 NSv Proximity Probe delivers precise, reliable shaft displacement measurement. This industrial automation module is a direct replacement for legacy 3300 RAM probes, offering enhanced chemical resistance for demanding process compressor applications. Its side-view characteristics outperform the 3000-series 190 probe when gapping at the same distance from the target.
Technical Specifications
Key parameters of the 330905-00-12-05-02-00 include:
-
Linear Range: 1.5 mm (60 mils), starting at 0.25 mm (10 mils) from target
-
Incremental Scale Factor (ISF): 7.87 V/mm (200 mV/mil) ±12.5%/-20%
-
Deviation from Best Fit Straight Line (DSL): < ±0.06 mm (±2.3 mils)
-
Frequency Response: 0 to 10 kHz, +0/-3 dB typical
-
Probe DC Resistance: 4.0 ± 0.5 ohms (for 0.5 m length)
-
Operating Temperature: -52°C to +177°C (-62°F to +351°F)
Industry Applications
This probe excels in turbomachinery monitoring, particularly in process compressors where chemical exposure is a concern. Its compatibility with the previous 3300 RAM system allows seamless upgrades in existing installations. Use it for radial and axial shaft position monitoring, eccentricity measurement, and vibration analysis in critical rotating equipment.
Installation & Setup Guidance
Install the 330905-00-12-05-02-00 with the recommended gap setting of 1.0 mm (40 mils). Use the supplied M10X1 thread and apply torque values: maximum 33.9 N•m (300 in•lb) on the probe case, but only finger tight for the recommended torque. Ensure the target surface is at least 8.9 mm (0.35 in) in diameter; for shafts under 13 mm (0.5 in), adjust gap to limit scale factor changes. Connect using the miniature coaxial ClickLoc connector and standard cable, with field wiring up to 305 meters (1,000 feet) using three-conductor shielded triad cable.
Maintenance & Reliability
The probe tip is made of polyphenylene sulfide (PPS) and the case of AISI 304 stainless steel, ensuring durability in harsh environments. The Viton O-ring seals differential pressure between tip and case, but probes are not pressure-tested before shipment. For applications requiring pressure seal verification, contact our custom design department. The minimum bend radius of 25.4 mm (1.0 in) prevents cable damage during installation. Regular inspection of cable integrity and connector tightness will maximize service life.
Compatibility & Integration
The 330905-00-12-05-02-00 is mechanically and electrically interchangeable with Bently Nevada’s 3300 RAM probe and extension cable. It pairs with the 3300 XL NSv Proximitor Sensor and standard monitoring systems. The probe cable options include lengths of 0.5, 1, 5, or 7 meters, all with 75 Ω coaxial FEP insulation.
Selection Guide & Purchasing Advice
When ordering, verify the unthreaded length (00 mm), overall case length (120 mm), total length (0.5 m), and connector type (miniature coaxial ClickLoc). Confirm thread type (M10X1) and whether armor is needed. For reliable sourcing, PLC Source PRO offers new, factory-packed units with a 12-month warranty.