The Bently Nevada 330130-080-13-CN standard extension cable is a high-integrity signal transmission link engineered for the 3300 XL 8 mm proximity transducer system. Deployed extensively in high-vibration, chemically aggressive environments like steam turbine generator sets, large-scale refining compressors, and heavy mining excavators, this armored cable preserves the precise RF signal between the sensor probe and the Proximitor. Featuring integrated fluid-blocking technology, it prevents process liquids and high-pressure steam from leaking through the cable core into delicate junction boxes. Integrating this heavy-duty, armored extension line ensures steady, noise-free machine diagnostics, shielding your critical turbomachinery loops against false trips and minimizing unplanned downtime.

Model Suffix Configurations

The precise engineering suffix structure of the 330130-080-13-CN extension cable designates its length, mechanical armor, and global regulatory compliance:

• 330130: Base model designator for the high-performance 3300 XL Standard Extension Cable series.

• 080: Cable Length Option specifying exactly 8.0 metres (26.2 feet) of calibrated electrical length.

• 13: Connector Protector and Cable Option equipping a ruggedized stainless steel outer armor, FluidLoc gas/liquid-tight internal sealing, and a pre-installed protective sleeve for the coaxial junction.

• CN: China-specific hazardous area approvals, covering NEPSI and CCC requirements alongside ATEX/IECEx certifications for intrinsically safe or flameproof operations in volatile gas and dust environments. This globally procured version ensures compliance for equipment intended for, or compatible with, Chinese industrial markets.

Electrical & Mechanical Specifications

System Integration & Field FAQs

• Q: Why is the exact 8.0 metres length of this cable critical for system calibration?

  A: Eddy current proximity sensors rely on a tuned resonant circuit calibrated to a specific total electrical length (typically 9.0 metres). Pairing an 8.0 metres extension cable with a 1.0 metre probe matches this exact calibration profile. Mismatching these lengths will cause severe linearity errors in your gap and vibration readings.

• Q: What is the primary purpose of the FluidLoc seal in the "13" option?

  A: The FluidLoc feature is an internal barrier inside the coaxial cable that blocks oil, water, or process gases from flowing inside the cable jacket. This is vital when the probe is mounted inside a pressurized oil-mist environment, preventing process fluids from migrating into the external field wiring cabinet.

• Q: Can this armored extension cable be installed in cable trays without conduit?

  A: Yes. The flexible stainless steel armor provides robust mechanical protection against crushing, abrasive wear, and cutting. It allows for direct routing in open cable trays, reducing overall installation costs while maintaining physical signal path integrity.

Mechanical Installation & Grounding Protocols

• System Length Match Verification: Prior to mounting, verify that the total combined length of your proximity probe and this extension cable matches the calibration rating of your Proximitor sensor (e.g., a 1.0 m probe plus this 8.0 m cable equals a 9.0 m calibrated system). Using a 5.0 m Proximitor with this combination will cause immediate calibration and measurement faults.

• Maintaining Minimum Bend Radius: While the stainless steel armor offers superior physical defense, do not bend the cable tighter than a minimum radius of 25.4 mm (1.0 inch). Kinking or over-bending the armor can distort the internal coaxial geometry, altering the system's impedance and degrading the vibration signal accuracy.

• Coaxial Connection Isolation: Utilize the pre-installed connector protector sleeve at the probe-to-extension cable junction. Ensure the ClickLoc connectors are clean, completely dry, and fully clicked into place before sliding the protector over the connection. Never allow the unshielded connector metal to touch the machine casing, as this creates ground loops that introduce massive electrical noise.