Product Overview
When precise shaft vibration and position monitoring is critical, the Bently Nevada 330903-00-04-10-02-00 3300 NSv Proximity Probe delivers reliable, repeatable measurements. This eddy-current probe is designed for permanent installation in turbo-machinery, process compressors, and other rotating equipment. With a 1.0 meter (39 in) total length and miniature coaxial ClickLoc connector, this probe is ready for direct integration into your monitoring system.
The 330903-00-04-10-02-00 is part of the 3300 NSv series, offering enhanced chemical resistance compared to the previous 3300 RAM probe. This makes it suitable for demanding process applications. The probe is mechanically and electrically interchangeable with the 3300 RAM probe, simplifying upgrades.
Technical Specifications
Key parameters for the Bently Nevada 330903-00-04-10-02-00 are listed below. These values are directly from the manufacturer's specifications.
| Parameter |
Value |
| Thread Size |
M8X1 |
| Unthreaded Length |
0 mm |
| Overall Case Length |
40 mm |
| Total Length |
1.0 meter (39 in) |
| Connector Type |
Miniature coaxial ClickLoc |
| Probe DC Resistance (at 1.0 m) |
4.2 ± 0.5 ohms |
| Linear Range |
1.5 mm (60 mils) from 0.25 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 (with up to 305 m field wiring) |
| Target Size (flat target) |
Minimum 8.9 mm (0.35 in) diameter; recommended minimum 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, lengths 0.5, 1, 5, or 7 m |
| 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 Torque (M8X1) |
Maximum 7.3 N•m (65 in•lb); recommended 5.1 N•m (45 in•lb) |
| Maximum Thread Engagement |
12 mm |
Industry Applications
The 330903-00-04-10-02-00 excels in environments where chemical resistance is essential, such as process compressors. Its superior side-view characteristics allow accurate gapping even in tight installations. Use this probe for:
- Radial shaft vibration monitoring on turbines, compressors, and pumps
- Axial position measurements on shafts (with attention to target size)
- Eccentricity and speed measurements in rotating machinery
Thanks to its compatibility with the 3300 RAM system, the 330903-00-04-10-02-00 serves as a drop-in replacement, minimizing downtime during upgrades.
Installation & Setup Guidance
Proper installation is essential for accurate readings. Follow these guidelines:
- Mount the probe with the recommended torque: finger tight is sufficient; do not exceed 0.56 N•m (5 in•lb).
- Maintain a minimum bend radius of 25.4 mm for the probe cable to prevent damage.
- Ensure the target surface meets the minimum diameter of 8.9 mm; for axial position on shafts smaller than 13 mm, expect scale factor changes and adjust the gap accordingly.
- Use a shielded triad cable for field wiring, with a maximum length of 305 meters (1,000 feet) to the Proximitor Sensor.
Maintenance & Reliability
The 330903-00-04-10-02-00 is built for long service life. The stainless steel case and PPS tip resist corrosion. Periodically inspect the probe cable for cuts or kinks, and verify the connector is secure. The probe is designed to seal differential pressure; if you require pressure testing, contact the manufacturer's custom design department.
Selection Guide & Purchasing Advice
Before ordering, verify your system's requirements: thread size (M8X1), total length (1.0 m), connector type (ClickLoc), and cable type (standard). This part number 330903-00-04-10-02-00 is new and in original factory packing. PLC Source PRO offers a 12-month warranty and ensures genuine Bently Nevada parts. For additional configurations, contact our sales team.