Description

Engineered for high-reliability vibration and position monitoring, the Bently Nevada 330101-33-52-10-12-05 is a robust 8 mm proximity probe designed to excel in extreme industrial environments. As a cornerstone of the 3300 XL proximity transducer system, this sensor operates on the eddy-current principle to deliver highly accurate, non-contact measurement of static displacement and dynamic shaft vibration. Unlike standard models, this specific configuration features a 3.3-inch unthreaded length, a 5.2-inch overall case length, a 1.0-meter overall length, and utilizes Bently Nevada patented FluidLoc cable technology (Option 12) which prevents lubrication oil and process liquids from leaking out of the machine along the cable interior. Additionally, this probe is certified for hazardous areas under Option 05 approvals.

The sensor is fully backward-compatible with legacy non-XL 3300 series 5 mm and 8 mm transducer components, facilitating hassle-free drops-in replacements during maintenance cycles. Combining proprietary TipLoc molding with a ruggedized case design, it provides exceptional physical protection and structural bonding strength at the probe tip, ensuring long-term thermal stability and resisting physical degradation under high-stress operating conditions.

Features

• FluidLoc Cable Technology: Includes a patented FluidLoc cable (Option 12) that prevents oil and other process liquids from leaking through the cable's inner core.
• Rugged Mechanical Design: Features an unthreaded length of 3.3 inches and a total case length of 5.2 inches in a heavy-duty 3/8-24 UNF-2A threaded stainless steel body.
• High Pull Strength: Built with CableLoc construction to deliver up to 330 N (75 lbf) of pull strength, securing the bond between the probe body and cable.
• Interchangeable Compatibility: Fully compatible with the 3300 XL Proximitor series and extension cables, eliminating the need for individual component calibration.
• Gold-Plated Connections: ClickLoc coaxial connectors click into place to indicate a secure mechanical lock, resisting corrosion and ensuring low signal loss.
• Hazardous Location Certification: Pre-approved for explosive environments with CSA, ATEX, and IECEx approvals (Option 05).

Applications

• Non-contact radial vibration and shaft position monitoring in high-pressure steam and gas turbines.
• Rotor and shaft axial displacement measurements inside centrifugal compressors and multi-stage pumps.
• Keyphasor phase reference and rotational speed monitoring on industrial turbo-machinery.
• Permanent machine protection in oil and gas refineries, petrochemical plants, and power generation installations.

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Maintain a calibrated probe gap (typically -9 Vdc or 1.27 mm / 50 mils) during installation to ensure the measurement falls centered within the linear range.
• Ensure the unthreaded portion of 3.3 inches and case length of 5.2 inches fit the casing mounting bracket without binding or interference.
• Always use a recommended torque values when installing the probe to avoid threading damage.
• Route the FluidLoc cable with proper support, avoiding sharp bends that exceed the minimum bend radius of the coaxial core, and protect the connection from excessive machine oil exposure.

Compliance and Certifications

• North American approvals: CSA certified for Division 1, Division 2, Zone 0, Zone 1, and Zone 2 hazardous areas.
• European/International approvals: ATEX and IECEx certified for explosive atmospheres when used with certified barrier configurations.