BENTLY NEVADA 330104-00-03-10-02-00 Extension Cable

Configured for high-precision physical gap and vibration signal transmission in 3500 and 3300 Machinery Monitoring Systems, the Bently Nevada 330104-00-03-10-02-00 (330104 3300 XL 8 mm Extension Cable) provides direct physical/electrical execution. It connects the 3300 XL proximity probe to the Proximitor Sensor, relaying high-frequency radio frequency (RF) signals without amplitude distortion or phase shift across critical rotating machinery trains.

Suffix Breakdown & Model Matrix

Hardware Specifications

Eddy-Current Signal Scaling & Proximity Probe System Calibration

The 330104 extension cable maintains rigid electrical capacitance match across the eddy-current transduction circuit. Correct system tuning ensures the Proximitor Sensor maintains an accurate scale factor of 7.87 V/mm (200 mV/mil) when measuring target shaft deflection. In field commissioning, verified gap voltage validation (-10 VDC targets representing a 1.27 mm nominal center gap) relies entirely on maintaining matching cable lengths (1.0 m, 5.0 m, or 9.0 m overall system matching). Mismatched total lengths degrade linearity, leading to incorrect rotor dynamics monitoring and compromised cross-talk suppression between adjacent radial probe pairs.

Frequently Asked Questions

Q: Can the 330104 extension cable length be trimmed or spliced in the field?

A: No. Splicing or shortening the cable alters the precise system capacitance required by the Proximitor sensor, causing severe signal attenuation and invalidating the 7.87 V/mm scale factor.

Q: What is the primary function of the flexible armor option (-03)?

A: The stainless steel flexible armor provides mechanical protection against impact, abrasion, and crushing forces in harsh industrial plant environments without compromising flexibility.

Q: Is hot-swapping or disconnecting the extension cable allowed during active machine operation?

A: Disconnecting the cable while the TSI rack is active disrupts the loop current (-24 VDC supply), resulting in immediate NOT OK status flags and potential false trip signals if voting logic is unmasked.

Field Installation Guidelines

• Maintain a minimum cable bend radius of 75 mm for armored sections during conduit pull steps to prevent coaxial core deformation.
• Ensure ClickLoc miniature coaxial connectors are fully seated and hand-tightened until the internal detent mechanism locks. Apply silicone self-fusing tape over connector joins if exposed to ambient oil spray.
• Isolate cable armor shield grounding to a single point at the Proximitor housing to prevent ground loops from corrupting dynamic vibration signals.
• Ensure proper thread engagement (5 NPT threads minimum for explosion-proof conduit fittings) when passing cable assemblies through pressure boundary penetrations.