Product Overview
When precise shaft vibration and position monitoring are critical, the Bently Nevada 330905-00-11-05-02-00 delivers reliable performance. This 3300 NSv proximity probe is engineered for industrial automation applications where chemical resistance and side-view accuracy matter. Mechanically and electrically interchangeable with the previous 3300 RAM probe, it offers enhanced chemical resistance for process compressor environments.
Key Specifications
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Model: 330905 – 3300 NSv Probe, M10X1 thread, without armor
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Unthreaded Length: 00 mm
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Overall Case Length: 110 mm
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Total Length: 0.5 meter (20 in)
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Connector: Miniature coaxial ClickLoc connector, standard cable
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Probe DC Resistance: 4.0 ± 0.5 ohms (for 0.5m length)
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Linear Range: 1.5 mm (60 mils) from 0.25 to 1.75 mm
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Recommended Gap: 1.0 mm (40 mils)
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Incremental Scale Factor (ISF): 7.87 V/mm (200 mV/mil) +12.5%/-20%
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Deviation from Best Fit Straight Line (DSL): Less than ±0.06 mm (±2.3 mils)
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Frequency Response: 0 to 10 kHz: +0, -3 dB typical
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Operating/Storage Temperature: -52°C to +177°C (-62°F to +351°F)
Technical Specifications
| Parameter |
Value |
| 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 meters |
| Extension Cable DC Resistance |
Center: 0.220 Ω/m (0.067 Ω/ft); Shield: 0.066 Ω/m (0.020 Ω/ft) |
| Extension Cable Capacitance |
69.9 pF/m (21.3 pF/ft) typical |
| Field Wiring |
0.2 to 1.5 mm² (16 to 24 AWG); with ferrules 0.25 to 0.75 mm² (18 to 23 AWG); max 305 m (1000 ft) to monitor |
| Target Size (flat) |
Min 8.9 mm (0.35 in) dia; recommended min 13 mm (0.5 in) dia |
| Recommended Torque |
Finger tight |
| Maximum Torque |
0.56 N·m (5 in·lb) |
| Minimum Bend Radius |
25.4 mm (1.0 in) with or without SST armor |
| Probe Case Thread |
M10X1; max thread engagement 15 mm |
| Probe Case Torque (M10X1 first three threads) |
Max 22.6 N·m (200 in·lb); recommended 7.5 N·m (66 in·lb) |
Applications
This probe excels in turbomachinery monitoring, including steam turbines, compressors, and pumps. Its superior side-view characteristics make it ideal for applications where axial position or radial vibration measurements are taken. The enhanced chemical resistance supports use in process compressors handling aggressive media.
Installation Guidance
Mount the probe with finger tight torque initially, then adjust to recommended torque using a calibrated wrench. Ensure the target surface meets the minimum diameter requirements. For axial measurements on shafts smaller than 13 mm, expect scale factor changes; reduce gap to minimize variation. Use shielded triad cable for field wiring, keeping total length under 305 meters to preserve frequency response.
Maintenance & Reliability
Regularly inspect the probe tip for contamination or damage. Check cable integrity and connector tightness. The Viton O-ring seals differential pressure; however, probes are not pressure tested before shipment. For pressure-critical applications, request a seal test from the custom design department. Routine checks extend service life and prevent unplanned downtime.
Selection Guide
Verify your required unthreaded length, overall case length, and total length options when ordering. Ensure compatibility with your existing 3300 XL NSv Proximitor Sensor. For reliable sourcing, PLC Source PRO offers this genuine Bently Nevada 330905-00-11-05-02-00 with factory warranty and original packaging.