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The Bently Nevada 330130-040-03-00, also cataloged as the 330130 Extension Cable, operates as a dedicated hardware component for RF signal transmission within 3300 XL Proximitor Sensor networks. It acts as the electrical link connecting a proximity probe to a remote transducer module, facilitating continuous gap voltage monitoring without introducing phase errors or uncompensated impedance mismatches into the measurement loop.

Suffix Breakdown & Model Matrix

  • 330130 - Base Model: 3300 XL Standard Extension Cable
  • -040 - Cable Length Option: 4.0 metres (13.1 feet)
  • -03 - Connector Protector and Cable Option: Armored cable with connector protectors
  • -00 - Agency Approval Option: Not required

Hardware Specifications

Parameter Specification
Model 330130-040-03-00
Brand Bently Nevada
Origin United States
Weight 2.0 kg
Dimensions 4.0 m nominal length (armored jacket diameter 5.89 mm)
Operating Temp -51 to +177 deg C
Power Consumption Passive (0.0 W)
System Compatibility 3300 XL 5 mm and 8 mm Proximity Transducer Systems
Cable Capacitance 69.9 pF/m (21.3 pF/ft) nominal
Characteristic Impedance 75.0 ohm nominal
Minimum Bend Radius 25.4 mm (1.0 in) for armor jacket

Eddy-Current Signal Transmission & Gap Voltage Validation

The mechanical integrity of rotating machinery relies on consistent eddy-current probe scaling. The 330130 extension cable maintains tight impedance matching to prevent signal attenuation and phase shifts over its 4.0 m length. This shielding configuration supports gap voltage validation targeting a nominal -10 VDC baseline, ensuring that the Proximitor sensor translates distance deviations into clean linear voltage tracking without cross-talk interference from neighboring high-current lines.

Frequently Asked Questions

Q: Does the installation of the connector protectors alter the electrical characteristics or the total system length optimization?

A: No. The connector protectors provide purely physical isolation and sealing for the coaxial junctions. They do not alter the electrical length, capacitance, or 75.0 ohm characteristic impedance calibrated for the 3300 XL system.

Q: What is the mechanical limitation regarding cable routing and minimum bend radius for the armored option?

A: The armored jacket variant mandates a minimum static bend radius of 25.4 mm. Exceeding this threshold risk mechanical deformation of the inner coaxial core, which alters local capacitance and degrades signal linearity.

Field Installation Guidelines

  • Ensure the cumulative length of the proximity probe and the extension cable matches the specific calibration requirements of the Proximitor sensor (typically 5.0 m or 9.0 m total system lengths).
  • Slide the connector protectors completely over the coaxial connection points to prevent moisture ingress and ground loops caused by contact with structural metalwork.
  • Maintain a minimum 25.4 mm bend radius during tray routing and conduit installation to avoid microfractures in the inner conductor.
  • Route the armored extension cable through dedicated low-voltage instrument trays to provide physical separation from high-voltage motor supply lines.

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