Product Overview: Bently Nevada 3300 NSv Proximity Probes

Key Technical Specifications

• Brand: Bently Nevada
• Model & Complete Suffix:
  330903 - 05 - 19 - 05 - 02 - 00
  • 330903: 3300 NSv Probe, M8X1 thread, without armor
  • -05-: Unthreaded Length = 50 mm
  • -19: Overall Case Length = 190 mm
  • -05: Total Cable Length = 0.5 meter
  • -02: Miniature coaxial ClickLoc connector
  • -00: Agency approval not required
• Measurement Range: 1.5 mm (60 mils) linear range from 0.25 to 1.75 mm from target.
• Sensitivity (ISF): 7.87 V/mm (200 mV/mil) with +12.5%/-20% tolerance.
• Linearity (DSL): Better than ±0.06 mm (±2.3 mils) deviation.
• Frequency Response: 0 to 10 kHz (+0, -3 dB) with up to 305m of field wiring.
• Probe DC Resistance: 4.0 Ω ± 0.5 Ω for the standard 0.5m cable.
• Recommended Gap: Set to 1.0 mm (40 mils) for standard operation.

Construction & Environmental Ratings

• Operating Temperature: -52°C to +177°C (-62°F to +351°F).
• Probe Tip: Made from chemical-resistant Polyphenylene Sulfide (PPS).
• Probe Case: Constructed from AISI 304 Stainless Steel with an M8x1 thread.
• Sealing: Features a Viton O-ring for differential pressure sealing.
• Cable: 75 Ω coaxial with FEP insulation; minimum bend radius is 25.4 mm.

Installation & Mounting Details

• Target Size: Minimum 8.9 mm diameter; 13 mm diameter is recommended for consistent scale factor.
• Case Torque: Maximum 7.3 N•m (65 in•lb); recommended 5.1 N•m (45 in•lb).
• Thread Engagement: Do not exceed 12 mm for proper mounting.
• Field Wiring: Use shielded triad cable (0.2-1.5 mm²). Keep runs under 305m to the monitor.

System Compatibility & Advantages

• This 3300 NSv Probe works directly with 3300 XL NSv Proximitor modules.
• It is fully interchangeable with the older 3300 RAM probe and cable system.
• The NSv series offers superior chemical resistance for harsh applications like process compressors.
• Extension cable data: Center conductor 0.220 Ω/m, Capacitance 69.9 pF/m typical.

Frequently Asked Questions (FAQ)

• What does the '-05-' suffix mean? It specifies a 50 mm unthreaded length on the probe case.
• Is this sensor backward compatible? Yes, the 330903 model replaces 3300 RAM probes directly.
• What is the output voltage range? The probe provides an approximate -1 to -13 Vdc signal across its linear span.
• How do I ensure accurate measurement? Use the recommended 13mm target and set the gap to 1.0 mm.

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