Product Overview
The Bently Nevada 330903-00-04-10-01-00 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 with a linear range of 1.5 mm (60 mils) and an incremental scale factor of 7.87 V/mm (200 mV/mil). Its enhanced chemical resistance makes it ideal for process compressor applications where exposure to aggressive media is common. As a direct replacement for the previous 3300 RAM probe, the 330903-00-04-10-01-00 ensures seamless integration into existing Bently Nevada monitoring systems.
Technical Specifications
The following specifications are sourced directly from the manufacturer's data for the Bently Nevada 330903-00-04-10-01-00.
| Parameter |
Value |
| Model |
3300 NSv Proximity Probe |
| Thread Type |
M8X1 (without armor) |
| Unthreaded Length |
0 mm |
| Overall Case Length |
40 mm |
| Total Length |
1.0 meter (39 in) |
| Connector Type |
Miniature coaxial ClickLoc with connector protector |
| Cable Type |
Standard cable |
| Agency Approval |
Not required |
| Probe DC Resistance |
4.2 ± 0.5 ohms (for 1.0 m length) |
| Linear Range |
1.5 mm (60 mils), from 0.25 mm 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 (SST) |
| Probe Cable |
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) |
| Probe Case Thread Engagement |
Maximum 12 mm (M8x1) |
Industry Applications
The 330903-00-04-10-01-00 excels in monitoring shaft vibration and axial position in turbomachinery, compressors, and pumps. For example, in a process compressor handling corrosive gases, the probe's increased chemical resistance ensures stable performance over time. Its superior side-view characteristics allow accurate gap measurements even when space is constrained. Additionally, the probe's compatibility with previous 3300 RAM systems simplifies retrofits, minimizing downtime during upgrades.
Installation & Setup Guidance
Proper installation is critical for accurate readings. Begin by verifying the target surface meets the recommended minimum diameter of 13 mm (0.5 in). Mount the probe using the M8X1 thread, ensuring finger-tight contact initially, then tighten to a maximum torque of 0.56 N•m (5 in•lb). Maintain a minimum bend radius of 25.4 mm (1.0 in) for the cable to prevent damage. Use the recommended gap setting of 1.0 mm (40 mils) for optimal linearity. For field wiring, use a three-conductor shielded triad cable with a maximum length of 305 meters (1,000 feet) between the Proximitor Sensor and the monitor.
Maintenance & Reliability
Routine inspection of the probe tip and cable is recommended to ensure long-term reliability. Check for any physical damage or contamination on the PPS tip, as this can affect measurement accuracy. The stainless steel case resists corrosion, but verify the integrity of the Viton O-ring seal in high-pressure applications. Operating within the specified temperature range of -52°C to +177°C ensures stable performance. Regular calibration checks against a known target can help maintain measurement confidence.
Selection Guide & Purchasing Advice
When selecting a replacement probe, verify the exact model number 330903-00-04-10-01-00 to ensure compatibility with your existing Bently Nevada monitoring system. Confirm the thread type (M8X1), overall case length (40 mm), and total length (1.0 m) match your installation requirements. The ClickLoc connector with protector provides secure and reliable connection. For sourcing genuine parts, PLC Source PRO offers new and original units with factory packing and a 12-month warranty, ensuring peace of mind for your operations.