Description

The Bently Nevada 330101-00-18-50-02-05 is a high-precision, non-contact 8 mm proximity probe designed to measure radial vibration, shaft position, and keyphasor references on rotating machinery. Part of the industry-proven 3300 XL 8 mm Proximity Transducer System, this specific configuration features a 1.8-inch fully threaded case with zero unthreaded length (0.0 inches), making it highly adjustable and compact for direct casing installations. It is integrated with a 5.0-meter (16.4 feet) standard coaxial cable terminating in a miniature gold-plated ClickLoc coaxial connector.

Engineered for hazardous industrial environments, this variant carries comprehensive CSA, ATEX, and IECEx approvals (Option 05) for certified flameproof and intrinsically safe layouts. Because of its 5.0-meter length, this probe connects directly to a 5-meter 3300 XL Proximitor sensor without the need for an intermediate extension cable, reducing connection interfaces, simplifying signal pathways, and lowering overall installation costs.

Features

• Fully Threaded Body: Standard 1.8-inch case length with 0.0-inch unthreaded body ensures maximum depth adjustability in tight space envelopes.
• 5.0-Meter Integrated Cable: Provides a direct-connect pathway to a matching 5-meter Proximitor sensor, eliminating the extension cable interface to minimize signal impedance and potential point failures.
• Standard Non-Armored Cable: Offers highly flexible coaxial routing suitable for installations inside conduits or protective enclosures.
• Miniature ClickLoc Connector: Gold-plated contact connection with positive-locking feedback ensures a robust mechanical and electrical joint without specialized tooling.
• Hazardous Area Approval: Built with Option 05, certifying compliance for use under ATEX, IECEx, and CSA regulations in classified environments.
• Viton O-Ring Seal: Built-in pressure seal blocks differential pressure between the probe tip and casing, safeguarding against oil leakage from the bearing housing.

Applications

• Turbine Shaft Diagnostics: Continuous monitoring of radial shaft vibration and axial thrust displacement in high-speed steam and gas turbines.
• Industrial Gearboxes and Compressors: Precise displacement tracking on critical fluid-film bearing systems.
• Petrochemical and Power Plant Machinery: Non-contact machine protection within hazardous areas and high-vibration processing environments.
• Pump Rotor Displacement: Measurement of rotor centerline position and shaft motion path.

Ordering Information

Technical Specifications

Installation Guidelines

• Mechanical Gapping: Set the mechanical gap using a feeler gauge or by monitoring the DC voltage output of the Proximitor sensor during calibration (typically adjusted to target a mid-range DC offset).
• Thread Engagement: Ensure thread engagement does not exceed 0.563 inches (14.3 mm) to avoid binding or mechanical strain on the probe assembly.
• Cable Clamping: Secure the 5.0-meter coaxial cable along its run to prevent fatigue or mechanical damage from high-frequency structural vibrations.
• Environmental Protection: Protect the connector from dust and moisture exposure. Keep the ClickLoc connector dry and avoid oil contamination.

Compliance and Certifications

• ATEX/IECEx: Certified for intrinsically safe and non-sparking configurations (Ex ia IIC T5...T1 Ga, Ex nA IIC T5...T1 Gc, Ex ec IIC T5...T1 Gc).
• CSA: Approved for hazardous locations Class I, Division 1, Groups A, B, C, D.
• RoHS: Compliant with EU environmental and restricted substances directives.