Bently Nevada 330930-040-03-CN Extension Cable

Bently Nevada 330930-040-03-CN 3300 NSv Extension Cable

• Manufacturer & Model: Bently Nevada 330930-040-03-CN extension cable for 3300 NSv Proximitor Sensor systems.
• Product Type: 75 Ω coaxial extension cable connecting probe to proximitor.
• Cable Length: 4.0 meters (13.1 feet) as specified by -040 option.
• Connector Option: 03 = Without stainless steel armor, with connector protector.
• Agency Approval: CN = Country specific certification.
• Made in: U.S.A.
• Shipping Weight: 1.5 kg (3.3 lb).

Cable Construction and Material

• Cable Type: 75 Ω coaxial cable for impedance matching.
• Insulation Material: Fluoroethylene propylene (FEP) for high temperature resistance.
• Center Conductor DC Resistance: 0.220 Ω/m (0.067 Ω/ft).
• Shield DC Resistance: 0.066 Ω/m (0.020 Ω/ft).
• Typical Capacitance: 69.9 pF/m (21.3 pF/ft).
• Connector Material: Gold-plated brass for corrosion resistance.
• Armor Option: None selected on this model (option 03).

Temperature Specifications

• Operating Temperature: -51°C to +177°C (-60°F to +351°F).
• Storage Temperature: Same range as operating, -51°C to +177°C.
• FEP Rating: Maintains flexibility across full temperature range.
• Connector Rating: Gold-plated brass handles full temperature range.
• Low Temperature Limit: -51°C, suitable for Arctic or cryogenic applications.
• High Temperature Limit: +177°C, ideal for turbine and compressor environments.

System Integration Rules

• Length Addition Rule: Probe length + extension cable length = Proximitor total length.
• Example: 1.0m probe + 4.0m cable = 5.0m system length.
• Why this matters: Factory calibration assumes specific total system length.
• Do not mix: Different cable lengths change system response.
• Verification: Check proximitor label for approved total length.

Electrical Characteristics

• Impedance: 75 Ω nominal for signal integrity.
• Signal Rolloff: Occurs at high frequencies with long cables.
• Maximum Field Wiring Length: 305 meters (1,000 feet) to monitor.
• Recommended Field Cable: Three-conductor shielded triad.
• Field Wire Gauge: 0.2 to 1.5 mm² (16 to 24 AWG).
• With Ferrules: 0.25 to 0.75 mm² (18 to 23 AWG).

Linear Range and Gap Setting

• Linear Range: 1.5 mm (60 mils) total travel.
• Linear Range Start: Approximately 0.25 mm (10 mils) from target.
• Linear Range End: 1.75 mm (70 mils) from target.
• Corresponding Voltage Range: Approximately -1 to -13 Vdc.
• Recommended Gap: 1.0 mm (40 mils) for optimal performance.
• Voltage at Recommended Gap: Approximately -7 to -8 Vdc typical.

Physical and Mechanical Data

• Connector Type: 3300 NSv series gold-plated brass.
• Connector Protector: Included with option 03.
• Connector Protector Function: Prevents damage during installation and removal.
• Bend Radius: Follow standard coaxial cable practices.
• Cable Flexibility: FEP insulation remains flexible at low temperatures.

Tensile Strength Ratings

• Probe case to probe lead: 220 N (50 lb) maximum rated.
• Probe lead to extension cable connector: 220 N (50 lb) maximum rated.
• Probe case to stainless steel armor: 220 N (50 lb) maximum rated (when armored).
• Practical advice: Do not pull on cable to remove from conduit.
• Installation tip: Leave service loop at both ends for strain relief.

Connector Care and Maintenance

• Keep connectors clean: Dirt affects signal quality.
• Use connector protector: Install when cable not connected.
• Inspect before each use: Look for bent pins or damaged threads.
• Tighten hand-tight only: Do not use tools on connector nut.
• Replace if damaged: Damaged connectors cause intermittent signals.

Compatibility Information

• Compatible Probes: 3300 NSv series proximity probes.
• Compatible Proximitor: 3300 NSv Proximitor Sensor.
• Compatible Rack: 3500 Series monitoring systems.
• Not compatible with: Standard 3300 XL probes (different connector).
• Verification: Check probe and proximitor for NSv marking.

Frequency Response Considerations

• Signal rolloff increases with cable length. See Figure 16 and Figure 17 in manual.
• Long field wiring affects high frequencies. Maximum 305 meters to monitor.
• Use shielded triad cable for field wiring. Reduces noise pickup.
• Keep field wiring away from power cables. Prevents 50/60 Hz interference.
• Test system after installation. Verify frequency response meets specifications.

Package Contents

• 330930-040-03-CN extension cable: 4.0 meters with connectors on both ends.
• Connector protector: Installed on one end for storage.
• Documentation: Installation instruction sheet.
• No armor: This is option 03 (without stainless steel armor).

Shipping Information

• Shipping Weight: 1.5 kg (3.3 lb).
• Shipping Dimensions: Coiled in protective box, approximately 30 x 30 x 8 cm.
• FedEx: 2-3 business days.
• UPS: 2-4 business days.
• DHL: 3-5 business days.

Frequently Asked Questions

• Q: What is the 330930-040-03-CN extension cable used for?
  A: This cable connects a 3300 NSv proximity probe to a 3300 NSv Proximitor Sensor. It extends the reach from machine mounting point to the electronics rack.
• Q: What does the -040-03-CN suffix mean?
  A: 040 = 4.0 meter cable length. 03 = no stainless steel armor, with connector protector. CN = country specific agency approval.
• Q: Can I use this cable with standard 3300 XL probes?
  A: No. This is for 3300 NSv systems only. NSv uses different connector and impedance matching. Using with 3300 XL will cause signal errors.
• Q: How do I calculate total system length?
  A: Add probe length plus extension cable length. Example: 1.0m probe + 4.0m cable = 5.0m total. This total must match the Proximitor Sensor calibration.
• Q: What temperature range does this cable handle?
  A: The FEP insulation handles -51°C to +177°C (-60°F to +351°F). This suits most turbine, compressor, and high temperature pump applications.
• Q: Why choose option 03 (no armor) instead of armored cable?
  A: Choose unarmored (03) for conduit installations where the conduit provides physical protection. Armor adds weight and reduces flexibility. Use armor only for direct burial or exposed runs.