Description

The Bently Nevada 30000-00-18-18-02 serves as the primary 30000 Proximity Probe utilized to execute non-contact displacement and vibration measurements across Bently Nevada 3000 Series Machinery Protection platforms. Consequently, this non-contacting sensor translates the physical gap variation between the probe tip and a rotating shaft into an analog radio frequency feedback loop.

Suffix Breakdown & Model Matrix

• 30000: Base model number for 3000 Series Proximity Probe with standard 3/8-24 UNF mounting threads.
• -00: Unthreaded length option designating 0 inches of unthreaded case section.
• -18: Overall case length option designating a 1.8 inch threaded body length.
• -18: Total length option specifying an 18 foot (5.48 meters) integrated cable configuration.
• -02: Connector option designating an integrated miniature male coaxial connector termination.

Hardware Specifications

Transducer Interface & Mechanical Monitoring Characteristics

This probe assembly establishes a steady-state radio frequency field to maintain precise eddy-current probe scaling when capturing target metrics on rotating surfaces like AISI 4140 steel. The electrical configuration delivers reliable impedance transitions to achieve proper gap voltage validation (-10 VDC targets) during baseline static alignment calibration. Furthermore, the specialized low-mass winding format achieves effective native cross-talk suppression between adjacent orthogonal channels, isolating signal drift from raw waveforms tracked to resolve high-frequency rotor dynamics.

Frequently Asked Questions

Q: Why is the total electrical length of this integrated cable specifically designated as 18 feet?

A: The legacy 3000 Series Proximitor internal tuning circuits mandate a matched combined system electrical length of either 15 feet or 20 feet. An 18-foot option allows direct structural routing through wide casing paths back to local connection fields without using intermediate links.

Q: What operational effects occur if the probe face experiences substantial accumulation of mineral oil?

A: Because oil and oil-gas mixtures behave as non-conductive dielectric media, their physical presence on the probe face does not alter the underlying eddy-current path. The system maintains accurate calibration parameters as long as the underlying target path remains free of carbonized debris.

Field Installation Guidelines

1. Thread the 3/8-24 UNF probe body into the machined entry port by hand to avoid cross-threading the external casing alignment paths.
2. Advance the probe assembly mechanically while checking active DC potential levels until reaching the specified -10 VDC baseline centering index.
3. Secure the final mechanical position using standard locknuts, adhering to standard industrial torque specifications to prevent structural casing deformation.
4. Clean the male coaxial connector point and secure it firmly to the extension cable terminal block, protecting the joint using fluid-tight heat-shrink insulation tubing.