Description

Configured for mechanical position sensing and vibration monitoring in turbomachinery protection systems, the Bently Nevada 16925-99 (16925 Proximity Sensor Extension Cable) provides direct physical/electrical execution. This specialized interconnect translates high-frequency eddy-current signals from the proximity probe to the Proximitor sensor without attenuation. The component design limits phase shift and electrical impedance mismatches across standard critical machinery speed ranges.

Hardware Specifications

Transducer System Calibration and Cross-Talk Suppression

The Bently Nevada 16925-99 coordinates within an integrated loop where eddy-current probe scaling requires exact capacitance values. The precise physical length stabilizes the linear RF field profile generated by the Proximitor. During gap voltage validation, the system targets a nominal -10 VDC baseline, representing the midpoint of the calibrated linear range for standard 8 mm probe systems. Furthermore, the high-density outer shielding utilizes cross-talk suppression geometries to isolate low-voltage signals from neighboring rotor dynamics monitoring channels and high-induction motor lines sharing the same tray.

Frequently Asked Questions

Q: Can the cable be spliced or cut to a custom length if the installation route is shorter than 9 meters?

A: No. Cutting or splicing alters the total electrical capacitance and system impedance (75 Ohm), which directly corrupts the linear calibration scale and renders the gap voltage readings inaccurate.

Q: What is the mechanical limitation regarding bend radius during conduit routing?

A: The minimum allowable bend radius for this extension cable is 25.4 mm (1.0 inch). Exceeding this limit causes structural degradation of the internal insulation and changes core-to-shield capacitance.

Field Installation Guidelines

• Verify the physical length matches the Proximitor calibration settings before running the cable through internal infrastructure.
• Ensure the miniature coaxial connectors are clean, dry, and free of oil contaminants prior to final mechanical engagement.
• Provide a minimum thread engagement of 5 full turns when deploying the cable inside protective conduit fittings.
• Connect the outer shield layer directly to the designated instrumentation ground terminal at the Proximitor enclosure, ensuring no intermediate grounding points exist to avoid ground loops.