Description

The Bently Nevada 330101-00-75-20-02-00 is a highly precise and robust 3300 XL 8 mm proximity probe configured with a fully threaded 7.5-inch case, a 2.0-meter total length standard cable, and no unthreaded offset (0.0 in). This unarmored eddy-current sensor is engineered specifically for non-contact machinery protection and condition monitoring, delivering high-resolution displacement measurements in critical industrial rotating equipment. Designed without any unthreaded portion, this variant allows complete thread support through bearing housings or specialized mounting fixtures where case protrusion must be avoided. The standard cable configuration coupled with a ClickLoc miniature coaxial connector provides a stable, electrically quiet connection to extension cables, making it excellent for general-purpose monitoring networks that do not require specialized steel armor or hazardous area agency certification.

Features

• Fully Threaded Design: The 7.5-inch overall case is entirely threaded (0.0 in unthreaded length) to offer optimal depth adjustability and structural stability.
• Standard Coaxial Cable: Includes a 2.0-meter (6.6 feet) flexible coaxial cable without external armoring, designed for clean pathways or conduit routing.
• ClickLoc Connector Technology: Terminated with a high-durability miniature coaxial ClickLoc connector for a secure and corrosion-resistant coupling.
• Non-Contact Displacement Sensing: Utilizing the eddy-current operating principle, it provides continuous, dynamic measurements of rotor shaft vibration and axial position.
• Robust Construction: A polyphenylene sulfide (PPS) tip and stainless steel probe body withstand harsh chemical and oil-film industrial environments.

Applications

• Steam turbine rotor shaft vibration and position tracking
• Centrifugal compressor thrust bearing position monitoring
• Boiler feed pump shaft displacement and thrust displacement
• General-purpose rotating machinery vibration protection loops

Ordering Information

Technical Specifications

Installation Guidelines

• Adjusting Probe Gap: Calculate and lock the physical gap positioning using standard calibration voltage responses before securing locknuts.
• Cable Isolation: Route standard unarmored cables through dedicated electrical conduits or protective trays to safeguard them from mechanical wear or impact.
• Shield Grounding: Maintain proper noise immunity by keeping the coaxial cable shield continuous and grounding it at a single point, typically at the Proximitor sensor housing.
• Minimizing Crosstalk: Ensure the probe maintains adequate clearance from neighboring metallic surfaces to prevent side-view eddy-current distortions.