Metric – 3300 NSv Proximity Probes | Bently Nevada | 330904-08-10-50-02-05

Bently Nevada 330904-08-10-50-02-05 3300 NSv Proximity Probe

Overview

Bently Nevada 330904-08-10-50-02-05 is a 3300 NSv series proximity probe with an M8x1 thread and armored cable. It offers high precision for shaft displacement and vibration monitoring. Designed for use in small targets such as steam turbines and centrifugal compressors. Fully compatible with 3300 RAM series.

Technical Parameters

• Linear Range: 0.25 mm to 1.75 mm (10 to 70 mils)
• Recommended Gap: 1.0 mm (40 mils)
• Scale Factor: 7.87 V/mm (200 mV/mil), ±20%
• Resolution: Less than ±0.06 mm (±2.3 mils)
• Frequency Response: 0–10 kHz, -3 dB
• Operating Temp: -52°C to +177°C
• Storage Temp: -52°C to +177°C
• Probe Tip Material: Polyphenylene Sulfide (PPS)
• Probe Case Material: Stainless Steel AISI 304
• Pressure Seal: Viton O-ring
• Minimum Bend Radius: 25.4 mm
• Cable Type: 75 Ohm Coaxial, FEP Insulated

Mounting Guide

• Thread Size: M8x1
• Max Thread Engagement: 12 mm
• Recommended Torque: 5.1 N•m (45 in•lb)
• Max Torque: 7.3 N•m (65 in•lb)
• Install by hand, then secure to torque limit

Compatibility

• Fully compatible with 3300 RAM probes and extension cables
• Interchangeable without recalibration
• Ideal for tight space applications and small shaft diameters

Full Model Tree Structure

• 330904: 3300 NSv Probe Series
• -08: 80 mm Unthreaded Length
• -10: 100 mm Overall Case Length
• -50: 5.0 m Cable Length
• -02: Miniature ClickLoc Connector with Standard Cable
• -05: Multiple Agency Approvals

Additional Application Data

• Probe DC Resistance: 5.3 ± 0.7 ohms
• Extension Cable Resistance: 0.220 Ω/m (center), 0.066 Ω/m (shield)
• Cable Capacitance: 69.9 pF/m typical
• Field Wiring: 0.2 to 1.5 mm² (16–24 AWG)
• Max Distance to Monitor: 305 m

Real Industrial Use Cases

• Steam Turbines: Detects axial displacement with high accuracy
• Compressors: Resists chemical exposure in gas processing plants
• Gearboxes: Monitors shaft vibration to prevent failures