Bently Nevada 330101-00-17-20-12-05 3300 XL 8 mm Proximity Probe

Description

Option 00 (0.0 in unthreaded length), Option 17 (1.7 in overall case length), Option 20 (2.0 m total length), Option 12 (FluidLoc cable without connector protector), and Option 05 (CSA, ATEX, IECEx approvals) configure the Bently Nevada 330101-00-17-20-12-05, an eddy-current 8 mm proximity probe. Used for non-contact vibration and shaft position measurements, this probe is a fundamental transducer component that pairs with a 3300 XL Proximitor sensor and extension cable in critical machinery protection systems.

This configuration utilizes a FluidLoc cable (Option 12), which provides an internal seal to prevent lubricating oil or process gases from leaking along the interior of the coaxial cable. Unlike armored alternatives or variants with standard cabling, the unarmored 330101 series offers high flexibility in cable routing through standard conduit while ensuring sealing integrity. The 1.7-inch overall case length is fully threaded (3/8-24 UNF-2A), allowing for precise gap calibration when mounted directly on bearing housings or machinery casings.

Features

• FluidLoc Cable Technology: Option 12 prevents oil and other process fluids from leaking out of the machine through the cable interior.
• Fully Threaded Case: Option 00 specifies a 0.0 in unthreaded length, maximizing thread engagement for tight installation clearance.
• 1.7-Inch Case Length: Option 17 provides a standard 1.7 in overall case length with 3/8-24 UNF-2A threads for bearing mount configurations.
• 2.0-Meter Total Length: Option 20 supplies a 2.0 m total length, allowing proper tuning within a 5-meter or 9-meter transducer system.
• ClickLoc Coaxial Connector: Miniature coaxial connector features a corrosion-resistant gold-plated design that clicks when fully tightened.
• Explosive Atmosphere Approvals: Option 05 comes certified with CSA, ATEX, and IECEx approvals for installation in hazardous areas.

Applications

• Steam and gas turbine shaft vibration and axial position monitoring
• Compressor and pump rotor displacement measurements
• Bearing housing installations where oil containment along the cable run is critical
• Permanent machinery protection systems in hazardous chemical and petrochemical locations

Ordering Information

Technical Specifications

Installation Guidelines

When installing the probe, ensure the following engineering best practices are met:

• Probe Gap Calibration: Mount the probe with the appropriate mechanical clearance (typically 1.27 mm or 50 mils) corresponding to the system calibration curve.
• Cable Routing: Avoid sharp bends or pulling forces exceeding 330 N (75 lbf). Ensure coaxial cables are routed through protective conduits or trays.
• Grounding and Shielding: Properly terminate the extension cable shield and ground the system to prevent electrical noise interference in the vibration monitor.
• Thread Engagement: Maximum thread engagement should not exceed 0.563 inches to prevent binding or mechanical deformation.
• Leakage Prevention: Ensure the Viton O-ring is properly positioned on the case body to establish a differential pressure seal.

Compliance and Certifications

The 330101-00-17-20-12-05 probe is certified for use in industrial and hazardous environments with the following approvals:

• CSA: Certified for hazardous locations
• ATEX: Certified for explosive gas atmospheres
• IECEx: Certified for explosive atmospheres