Description

The Bently Nevada 330101-00-37-05-02-05 is a high-precision 8 mm proximity probe belonging to the industry-standard 3300 XL transducer family. Specifically designed to monitor radial vibration, shaft alignment, and axial displacement in high-speed turbomachinery, this unit features a 3/8-24 UNF thread and a fully threaded 3.7-inch overall case length (0.0-inch unthreaded length). This particular configuration is equipped with a short 0.5-meter (1.6 feet) standard coaxial cable without protective armor, terminating in a miniature coaxial ClickLoc connector. Engineered for challenging environments, this probe includes the 05 agency approval package, making it certified for hazardous area installations under ATEX, IECEx, and CSA standards. Lacking an unthreaded portion, this model allows for direct-thread mounting where clearance is limited, providing exceptionally reliable, non-contact eddy-current measurements.

Features

• 8 mm probe tip diameter designed for non-contact shaft vibration and displacement measurements.
• Fully threaded 3.7-inch case body allows robust direct-thread mounting with no unthreaded offset.
• 0.5-meter standard coaxial cable without armor provides highly flexible routing in constrained spaces.
• Gold-plated miniature coaxial ClickLoc connector ensures a highly secure, tactile-feedback connection.
• Viton O-ring design provides differential pressure sealing between the probe tip and case.
• CSA, ATEX, and IECEx certifications (05 approval option) enable safe operation in hazardous environments.

Applications

The 330101-00-37-05-02-05 proximity probe is ideal for heavy-industry machinery protection and condition monitoring, specifically on:

• Radial vibration and thrust position tracking on steam and gas turbine shafts.
• Rotor displacement and casing expansion monitoring on industrial compressors.
• Shaft alignment and speed measurements in large centrifugal pumps and gearboxes.
• API 670 machinery protection compliance loops integrated with Bently Nevada 3500 monitoring systems.

Ordering Information

Technical Specifications

Installation Guidelines

• Mount the probe with the correct gap (typically 1.27 mm or 50 mils to achieve a nominal -9 Vdc sensor output) per transducer calibration guidelines.
• Ensure you do not exceed the maximum thread engagement length of 0.563 inches (approximately 14.3 mm) for 3/8-24 UNF threads to prevent binding or thread damage.
• Route the standard coaxial cable carefully, avoiding any proximity to high-voltage lines, sharp metal edges, or moving machine components.
• Observe correct industrial grounding and shielding protocols by connecting the extension cable shield drain wire to instrument ground at the monitor end only.
• Protect the miniature ClickLoc connection from oil, water, and ambient dust by applying self-fusing silicone tape or installing dedicated connector boots.

Compliance and Certifications

• ATEX/IECEx: Intrinsically Safe Ex ia IIC T5...T1 Ga for hazardous area installations
• CSA: Class I, Division 1, Groups A, B, C, D
• RoHS: Compliant