Bently Nevada 330730-080-00-01

Bently Nevada 330730-080-00-01

Product Overview: The 330730-080-00-01 is an extension cable within the Bently Nevada 3300 XL 11mm eddy current sensor system. The 330730 series is specifically designed for the 11mm probe system, which provides a larger linear range compared to the 8mm system. In the model number, “330730” designates the 3300 XL 11mm extension cable product base, “080” indicates a cable length of 8.0 meters, “00” denotes a standard non-armored cable, and “01” indicates a specific agency approval option. This cable is fully compatible with 3300 XL 11mm probes and corresponding Proximitor transducers.

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Description

Bently Nevada 330730-080-00-01

Technical Specifications:

  • Cable Length: 8.0 meters
  • Cable Type: Standard non-armored cable
  • Probe System: 3300 XL 11mm
  • Connector Type: ClickLoc gold-plated copper connectors
  • Conductor Type: 75Ω triaxial coaxial structure
  • Insulation Material: FEP (Fluoroethylene Propylene)
  • Operating Temperature Range: -52°C to +177°C
  • Minimum Bend Radius: 25.4mm (1 inch)
  • Compliance Standard: API 670 (4th Edition)

Functional Features:

  • Designed specifically for the 3300 XL 11mm eddy current sensor system
  • 75Ω triaxial coaxial structure ensures impedance matching and signal transmission integrity
  • FEP insulation material provides excellent chemical resistance and high-temperature performance
  • Multi-layer shielding design effectively resists electromagnetic interference in the field
  • ClickLoc gold-plated copper connectors ensure corrosion-resistant, tool-free reliable connections
  • Fully interchangeable within the 3300 XL 11mm system
  • Low-loss high-frequency signal transmission over 8.0-meter length

Application Scenarios:

  • Large steam turbine differential expansion measurement
  • Compressor axial displacement monitoring requiring longer cable runs
  • Applications using 11mm probes for extended linear range (4mm)
  • Power generation turbine monitoring
  • Petrochemical plant rotating machinery condition monitoring
  • Applications requiring longer cable routing distances

Performance Parameters:

  • Cable Capacitance: 69.9 pF/m (21.3 pF/ft)
  • Output Impedance: 50Ω
  • Sensitivity Stability: Output changes less than 2mV per 1 volt change in input voltage
  • Frequency Response: 0 to 10kHz
  • Linear Range (with 11mm probe): 4mm (160 mils)
  • Sensitivity (with 11mm probe): 3.94 V/mm (100 mV/mil)

Material Composition:

  • Conductor: Copper core with braided shielding layer
  • Insulation Layer: FEP (Fluoroethylene Propylene)
  • Connector: ClickLoc gold-plated copper
  • Outer Jacket: Standard industrial-grade polymer

Structural Characteristics: Flexible coaxial cable with a triaxial structure. The cable is equipped with ClickLoc gold-plated copper connectors. The standard non-armored structure is suitable for indoor or conduit installations where the risk of mechanical damage is low. The 8.0-meter length provides sufficient wiring margin for installations where the Proximitor is located at a significant distance from the probe mounting point.

Working Principle: The extension cable serves as the signal transmission bridge in the eddy current sensor system, transmitting the high-frequency signal generated by the probe tip coil to the Proximitor without loss through the coaxial structure. The outer shielding braid of the coaxial structure prevents external electromagnetic interference from intruding, while the inner signal line maintains constant impedance. Once the signal reaches the Proximitor, it undergoes amplification, demodulation, and linearization, ultimately outputting a DC voltage signal proportional to the distance between the probe tip and the target surface.

Installation Requirements:

  • Ensure the total length of the probe cable plus the extension cable matches the Proximitor system length configuration
  • Cable routing must maintain at least 30cm clearance from high-voltage power cables
  • Maintain a minimum bend radius of 25.4mm; prohibit excessive bending
  • ClickLoc connectors are hand-tightened; do not use tools
  • The shielding layer must be grounded at a single point on the Proximitor end; prohibit multi-point grounding to prevent ground loops
  • Use conduit or cable trays for protection in areas with mechanical damage risk

Usage Notes:

  • The “00” code indicates a standard non-armored cable, suitable for clean indoor environments
  • The “01” code indicates a specific agency approval; verify that the certification meets site requirements before installation
  • Inspect connector condition at each maintenance interval
  • Never cut or splice the extension cable; any modification will destroy impedance matching
  • The 11mm system cable is not interchangeable with the 8mm system; ensure correct system matching
  • When replacing the cable, select a specification that exactly matches the original model

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