Bently Nevada 3300 XL 8mm Extension Cable Part Number: 330709-000-030-10-02-00

Description

Bently Nevada 3300 XL 8mm Extension Cable

Part Number: 330709-000-030-10-02-00

1. Product Introduction

The 330709-000-030-10-02-00 is a high-integrity, armored extension cable belonging to the Bently Nevada 3300 XL 8mm Proximity Transducer system. It serves as the vital electrical link that bridges the gap between the mounting probe and the Proximitor sensor. Constructed with a flexible stainless steel armor and a proprietary hermetic seal, this cable ensures robust protection against moisture, oil, and physical damage. The cable features Bently Nevada’s Click-Lok™ connector technology, which provides a secure, vibration-resistant connection that eliminates the risk of accidental decoupling in high-vibration environments.

330709-000-030-10-02-00

2. Main Technical Specifications

• Part Number Breakdown:
  • 330709: 3300 XL 8mm Extension Cable.
  • 000: Probe length code / Gage (Universal/Fit-all).
  • 030: Cable Length of 3.0 meters (approx. 9.8 feet).
  • 10: Option Code (Indicates CSA and CENELEC/ATEX approvals for hazardous areas).
  • 02: Connector Arrangement (Miniature coaxial Click-Lok connector at both ends).
  • 00: Standard seal/arrangement.
• Physical & Electrical Properties:
  • Construction: Coaxial design with a solid stainless steel armor sheath.
  • Total System Length: This cable has an electrical length of 3.0 meters. It must be paired with a probe and Proximitor that sum to the required system total (e.g., 5.0m or 8.0m system).
  • Connector Type:
    • *Probe End:* Miniature coaxial (Male) with locking nut.
    • *Proximitor End:* Miniature coaxial (Female) or MS connector, depending on mating Proximitor.
• Environmental Ratings:
  • Operating Temperature: -51°C to +105°C (-60°F to +221°F) for the cable body.
  • Fluid Resistance: Resistant to common industrial oils and lubricants.
  • Ingress Protection: Hermetically sealed at the probe end to prevent oil migration.

3. Typical Applications

This extension cable is used wherever vibration or position monitoring is required and the distance between the sensor and the instrumentation cabinet necessitates a cable run:

• Steam & Gas Turbines: Extending probe connections from the hot casing to the external junction boxes.
• Centrifugal Compressors: Routing radial vibration sensor signals through tight cable trays.
• Hazardous Areas: The “10” option certifies this cable for use in Zone 1/0 or Class I Div 1/2 hazardous environments (explosive atmospheres).
• High Vibration Zones: The Click-Lok feature ensures the connection remains secure even on gearboxes or high-speed machinery.

4. Avoid Technical Pitfalls (Best Practices & Warnings)

• Total Electrical Length (TEL) Mismatch: The most common error is calculating the system length incorrectly.
  • *Calculation:* Probe Length (at tip) + Cable Length (this part) = Total System Length.
  • *Requirement:* The Proximitor (e.g., 330780-50-00) must match this total. If you use a 3.0m cable with a probe intended for a 5.0m system, the Proximitor will display incorrect gap readings.
• Wrong Probe Series: Do not use this 3300 XL cable with older 7200 or standard 3300 series probes. The 3300 XL uses a reversed-polarity locking mechanism (Click-Lok) that is not physically compatible with the older screw-on types.
• Minimum Bend Radius: Never bend the cable sharply around corners, especially near the probe connector. A tight kink breaks the internal coaxial shield, causing intermittent signal dropouts (noise) that mimic bearing failures.
• Ingress Protection: Ensure the sealing sleeve is correctly tightened onto the probe. If the seal is loose, oil will wick down inside the cable, eventually destroying the Proximitor input.
• Grounding Loops: In general practice, the armor should be grounded at the Proximitor (rack) end only. Grounding both ends can induce ground loop noise (50Hz/60Hz hum) in the vibration signal.

5. Related Product Recommendations

• Matching Probes: Bently Nevada 330103 or 330130 Series 8mm Probes.
• Matching Proximitor: 330180 or 330780 Series Proximitors (Must match the calculated Total System Length).
• Junction Boxes: Bently Nevada 128769-01 or 128775-01 (Weatherproof field enclosures).
• Connector Kits: Spare coaxial connectors and sealing sleeves for field repairs.
• Monitoring System: Bently Nevada 3500/40M or 3500/42M Monitor Modules.