Bently Nevada 330854-040-24-05 3300 XL 25 mm Extension Cable
The Bently Nevada 330854-040-24-05, also cataloged as the 330854 extension cable, operates as a dedicated hardware component for probe‑to‑proximitor signal transmission within 3300 XL machinery protection platforms.
The extension cable maintains calibrated eddy‑current probe scaling across the 3300 XL 25 mm measurement chain. Its coaxial impedance preserves the nominal −10 VDC gap‑voltage reference generated by the proximitor, ensuring linear displacement interpretation. Armored construction reduces mechanical deformation risk, while FluidLoc materials maintain dielectric stability under elevated temperatures. Shield continuity suppresses cross‑talk, preventing induced noise in multi‑probe installations where rotor‑dynamic phase accuracy is critical.
Frequently Asked Questions
Q: Can the extension cable be replaced while the proximitor remains energized? A: No. Replacement must occur only when the monitoring channel is de‑energized to avoid transient gap‑voltage excursions.
Q: Does altering cable length affect displacement scaling? A: Yes. System length is factory‑matched. Non‑standard lengths change impedance and can shift the displacement calibration curve.
Q: Does the cable require firmware compatibility checks? A: No. The extension cable is a passive component and contains no firmware.
Field Installation Guidelines
Route the cable away from high‑current conductors to minimize electromagnetic interference. Maintain gentle bend radii to preserve coaxial impedance. Bond shielding at the proximitor end only to prevent ground‑loop formation. Ensure connector seating is fully engaged to maintain stable signal transmission. Apply strain relief to prevent micro‑motion that may introduce noise into rotor‑dynamic measurements.
