Bently Nevada 330705-02-18-10-02-00 3300 XL 11 mm Reverse Mount Probe

Description

Option 02 (0.2 in unthreaded length) and Option 18 (1.8 in case length) define this reverse mount 3300 XL 11 mm proximity probe configuration — 330705-02-18-10-02-00, featuring a 3/8-24 UNF thread, a 1.0 m total length, and standard coaxial connection without hazardous area approvals. This sensor is used for reverse-mount installations where the probe is threaded into a sleeve from the rear of the machine casing, providing access in restricted spaces.

The 3300 XL 11 mm system provides displacement and vibration measurement over a 4.0 mm (160 mils) linear range. It operates on the eddy-current principle, allowing non-contact monitoring of shaft vibration and rotor position. The integrated 75 ohm triaxial cable is FEP-insulated and terminated with a gold-plated miniature ClickLoc coaxial connector that resists loosening under high-vibration conditions.

Features

• Option 02 unthreaded length provides a 0.2-inch (5.1 mm) unthreaded segment on the 3/8-24 UNF-2A steel probe case.
• Option 18 overall case length provides a 1.8-inch (46 mm) fully threaded reverse-mount case structure.
• Option 10 total length specifies a 1.0-meter (3.3 feet) unarmored triaxial FEP-insulated probe cable.
• Option 02 connector option provides a miniature ClickLoc coaxial connector with gold-plated brass construction.
• Option 00 agency approval indicates the standard configuration for non-hazardous area environments.
• Reverse-mount design allows for installation and adjustment from the outside of the machine housing via a conduit or protective sleeve.

Applications

• Turbine shaft radial vibration and axial position monitoring.
• Centrifugal and reciprocating compressor rotor behavior measurements.
• Critical rotating machinery protection on machinery trains requiring 11 mm probe systems.

Ordering Information

Technical Specifications

Installation Guidelines

To ensure proper installation of the 3300 XL 11 mm reverse mount probe, thread the probe body carefully into the reverse mount sleeve or casing tap. Avoid exceeding the recommended torque limit of 7.5 N-m (66 in-lb) to prevent binding or thread damage. Ensure the connector-to-connector interface is kept clean and dry, and use silicone tape or connector protectors in high-humidity environments. Do not bend the probe cable below the minimum bend radius of 25.4 mm (1.0 inch).