The Bently Nevada 130539-33, also cataloged as the 130539-33 Extension Cable, operates as a dedicated hardware component for high-frequency RF signal transmission within 3300 XL 8 mm Proximity Transducer Systems.

Cable Configuration & Option Breakdown

• Part Number Base: 130539 represents the standard 3300 XL 8 mm Extension Cable assembly.
• Option -33: Specifies a total physical cable length of 3.3 meters (10.8 feet).
• Armor Options: Standard non-armored coaxial cable configuration with ClickLoc protective connector boots.

Physical & Electrical Parameters

Eddy-Current Probe Scaling & Cross-Talk Suppression

The 130539-33 extension cable maintains precise capacitance and inductance parameters essential for accurate eddy-current probe scaling (7.87 V/mm or 200 mV/mil). Matched impedance characteristics prevent phase shift distortion during high-frequency rotor dynamics monitoring. Advanced inner/outer shielding construction ensures superior cross-talk suppression between adjacent channels while maintaining gap voltage validation near nominal -10 VDC bias targets when coupled with a 3300 XL Proximitor Sensor.

Delivery Package Components

• 1 x Bently Nevada 130539-33 Extension Cable (3.3 m)
• 2 x Installed Connector Protective Caps

Field Installation Guidelines

• Bending Radius Limits

  Maintain a minimum bend radius of 25.4 mm (1.0 in) for unarmored cable to prevent internal coaxial center conductor deformation and impedance drift.

• Connector Torque & Insulation

  Hand-tighten miniature coaxial connectors until the ClickLoc mechanism engages. Use silicone self-fusing tape or connector protectors to insulate junctions from oil, moisture, and conductive debris.

• Routing & Isolation

  Route extension cables through dedicated grounded metallic conduit. Maintain physical separation from AC power wiring and variable frequency drive outputs to avoid electromagnetic signal interference.

Frequently Asked Questions

• Can the 130539-33 extension cable be cut or spliced in the field?

  No, altering cable length changes total system capacitance, degrading transducer calibration and causing severe scale factor errors.

• What Proximitor system lengths does a 3.3 m extension cable support?

  It connects standard 3300 XL 8 mm probes to yield fully calibrated 5.0 meter or 9.0 meter complete transducer system lengths.

• How does the cable prevent moisture ingress at the probe connector junction?

  The cable features molded ClickLoc connectors designed to lock tightly with protective rubber boots to seal out fluid contaminants.

• What target voltage should be observed during probe gap setting?

  Adjust physical probe position until the raw Proximitor DC gap voltage reads approximately -10 VDC at the center of the linear dynamic range.

• Is the cable rated for extreme cold environments?

  Yes, the cable jacket remains flexible and mechanically stable down to an operational temperature limit of -51 deg C.

• Does this cable require external electrical power?

  No, the cable acts as a passive RF transmission link between the eddy-current proximity probe and the Proximitor Sensor.

• What is the primary cause of signal noise in extension cable runs?

  Unshielded cable splices, crushed coaxial geometry, or routing adjacent to unshielded high-voltage power lines induce signal noise.

• How should spare cable slack be stored inside junction boxes?

  Coil excess cable length into loose loops with a minimum diameter of 150 mm, securing it with soft cable ties without pinching the outer jacket.