The Bently Nevada 330130-085-03-00, also cataloged as the 330130 Extension Cable, operates as a dedicated hardware component for interconnecting proximity probes and Proximitor sensors within 3500 Machinery Protection Systems. This cable facilitates the transfer of high-frequency carrier signals between the sensing element and the monitoring interface, ensuring the integrity of raw analog displacement data used for shaft vibration and position analysis.

Suffix & Model Matrix

• 330130: 3300 XL Extension Cable (Coaxial transmission line)
• -085: Cable Length option (8.5 meters total length)
• -03: Connector Option (Connector with fluid protection housing)
• -00: Agency Approval (Standard certification version)

Hardware Physical Specifications

Signal Transmission & Eddy-Current Loop Integrity

System performance depends on maintaining precise impedance characteristics throughout the transducer loop. The 330130 cable is engineered to minimize capacitance and inductive signal attenuation, which is necessary for eddy-current probe scaling accuracy. When matched with specific Proximitor sensors, the cable ensures the return signal maintains the necessary -10 VDC gap voltage validation targets. Proper mechanical handling of the coaxial shielding is required to avoid interference, which helps guarantee cross-talk suppression and signal fidelity during high-speed rotor dynamics monitoring.

Ordering Information

• Component Content: One (1) 330130-085-03-00 extension cable.
• Included Items: Two (2) silicone connector protectors to prevent oil and moisture ingress into the coaxial connections.

Installation Guidelines

• Minimum Bend Radius: Do not exceed a bend radius of 63.5 mm (2.5 inches) to prevent internal dielectric deformation and characteristic impedance shifts.
• Cable Securing: Use rubber-lined clamps every 1.0 meter to prevent cable vibration, which can induce microphonic noise into the displacement signal.
• Connection Mating: Ensure the Click-Loc connectors are fully seated and free of any particulate matter or lubricants before locking.
• Grounding: Route the cable away from high-power AC lines to prevent induced noise, ensuring the outer shield is grounded at the Proximitor enclosure barrier only.

Transit & Logistics

• Delivery time: 2-7 days when payment finish.
• Transit Carriers: Dispatched via DHL, FEDEX, or UPS.
• Handling: All units are shipped in sealed, anti-static industrial packaging to prevent electrostatic damage and physical shock.

Technical FAQ

• Can the 330130 cable be spliced if the original length is too short?

  No. Splicing alters the cable impedance and capacitance, which invalidates the system calibration and ruins the 7.87 V/mm scaling accuracy.

• Why must this cable be matched to the 3300 XL Proximitor sensor?

  The transducer loop (probe, cable, sensor) is a tuned resonance circuit; using unmatched components will shift the carrier frequency and degrade signal linearity.

• Does the 8.5 meter length affect the probe sensitivity?

  The system is factory-calibrated for specific total lengths. Using an 8.5 m cable requires the Proximitor to be configured for that specific impedance profile.

• Is the jacket material resistant to synthetic hydraulic fluids?

  Yes, the FEP jacket provides high chemical resistance to common machine lubricating oils and synthetic fluids used in industrial bearing housings.

• What is the maximum operating temperature for the cable assembly?

  The cable is rated for operation in environments up to 177 deg C, assuming proper mechanical mounting away from direct heat sources.

• Can this cable be used with older 3300 series 8 mm proximity probes?

  No. 3300 XL components are specifically designed for the XL series to ensure full system compatibility and linear measurement performance.

• How can I test for a faulty extension cable?

  Perform a continuity check on the center conductor and outer shield, ensuring no intermittent opens occur when the cable is flexed.

• What should I do if the coaxial connector locking collar fails?

  If the collar fails to engage, replace the connector protector or the entire cable, as a loose connection will introduce significant signal noise and potential NOT OK faults.