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This 3300 NSv proximity probe delivers precise shaft vibration and position measurements in confined industrial spaces. The sensor employs eddy current technology with a 1.5 mm linear measurement range for accurate target detection . It serves as a key component within the Bently Nevada 3300 transducer system for predictive maintenance programs. Additionally, the probe provides backward compatibility with legacy 3300 RAM probe systems and extension cables .
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | 330908-10-55-05-02-00 |
| Product Type | 3300 NSv Proximity Probe |
| Thread Size | 3/8-24 UNF |
| Unthreaded Length | 1.0 inch (Option 10) |
| Overall Case Length | 5.5 inches (Option 55) |
| Total Probe Length | 0.5 meter / 20 inches (Option 05) |
| Connector Type | Miniature coaxial ClickLoc (Option 02) |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Probe Case Material | AISI 304 stainless steel |
| Cable Insulation | FEP high-temperature material |
| Linear Range | 1.5 mm (60 mils) from 0.25 to 1.75 mm gap |
| Recommended Gap | 1.0 mm (approx. 40 mils) |
| Sensitivity | 7.87 V/mm (200 mV/mil) ± interchangeability error |
| Linearity Deviation | < ±0.06 mm (±2.3 mils) |
| Frequency Response | 0 to 10 kHz (-3 dB typical) |
| Probe DC Resistance | 4.0 ± 0.5 Ω (for 0.5 m cable) |
| Max Field Wiring | 305 meters |
| Operating Temperature | -52°C to +177°C |
| Minimum Bend Radius | 25.4 mm |
| Recommended Torque | 11.3 N·m (100 in·lb) |
| Weight | 0.15 kg |
Design and Installation Benefits
This probe utilizes a 3/8-24 UNF thread for mounting in standard machine casings. The 1.0 inch unthreaded section provides precise positioning flexibility during installation. Its 5.5 inch overall case length suits applications requiring deeper probe reach into housing bores. The 0.5 meter probe cable terminates with a miniature coaxial ClickLoc connector that ensures secure attachment to extension cables. This short cable length proves especially beneficial when installation space remains limited .
Measurement Performance
This probe delivers a linear output from approximately -1 VDC to -13 VDC across its full range . The incremental scale factor of 7.87 V/mm ensures consistent sensitivity for reliable monitoring. Linearity deviation under ±0.06 mm maintains measurement fidelity across the entire operating range. The system supports a 0 to 10 kHz frequency response with up to 305 meters of field wiring. Consequently, it suits high-speed turbomachinery monitoring applications effectively .
Environmental Durability
The probe operates reliably across extreme temperatures from -52°C to +177°C. The PPS tip and AISI 304 stainless steel case resist harsh chemicals and moisture encountered in process environments. The FEP cable insulation maintains flexibility and signal integrity under demanding conditions. A Viton O-ring seals differential pressure between the probe tip and case. Therefore, this probe excels in oil and gas, power generation, and heavy industrial applications .