Product Introduction: Bently Nevada 3300 NSv Proximity Probes

Core Technical Specifications

• Brand: Bently Nevada
• Model & Full Suffix:
  330903 - 17 - 19 - 05 - 02 - 00
  • 330903: 3300 NSv Probe, M8X1 thread, no armor
  • -17-: Unthreaded Length = 170 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: Linear range of 1.5 mm (60 mils) from 0.25 to 1.75 mm from target.
• Sensitivity (ISF): 7.87 V/mm (200 mV/mil) with a tolerance of +12.5%/-20%.
• Linearity (DSL): Deviation less than ±0.06 mm (±2.3 mils) from the best fit line.
• Frequency Response: 0 to 10 kHz (+0, -3 dB typical) with up to 305m of field wiring.
• Recommended Gap Setting: 1.0 mm (40 mils) for optimal performance.
• Probe DC Resistance: 4.0 Ω ± 0.5 Ω for a standard 0.5m probe length.

Environmental & Physical Durability

• Operating Temperature: -52°C to +177°C (-62°F to +351°F) for reliable operation in extreme conditions.
• Probe Tip Material: Chemically resistant Polyphenylene Sulfide (PPS).
• Probe Case Material: Durable AISI 304 Stainless Steel with M8x1 thread.
• Cable Type: 75 Ω coaxial cable with FEP insulation.
• Minimum Bend Radius: 25.4 mm (1.0 in) to prevent cable damage during installation.

Installation Guidelines

• Target Size: Minimum 8.9 mm diameter; 13 mm diameter is recommended for accurate scale factor.
• Torque Settings: Finger-tighten probe; maximum case torque is 7.3 N•m (65 in•lb).
• Thread Engagement: Maximum 12 mm for secure mounting.
• Field Wiring: Use 3-conductor shielded triad cable (0.2-1.5 mm²). Maximum length is 305m to monitor.

Compatibility & System Integration

• The 3300 NSv Probes work with standard 3300 XL NSv Proximitor Sensors.
• They are mechanically and electrically interchangeable with older 3300 RAM probes.
• NSv probes offer superior chemical resistance for process compressor applications.
• Extension cable resistance: Center conductor 0.220 Ω/m, Shield 0.066 Ω/m.

Frequently Asked Questions (FAQ)

• What is the main advantage of the NSv over the RAM probe? The NSv provides increased chemical resistance for tougher environments.
• Can I use this probe with my existing 3300 system? Yes, the 330903 model offers full electrical and mechanical compatibility.
• What is the output signal? The probe provides an approximate -1 to -13 Vdc signal across its linear range.
• How do I select the correct model suffix? Choose options for length, connector, and approvals based on your machinery design.

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