3300 XL Eddy-Current Proximity Systems help critical equipment achieve higher reliability

Bently Nevada 3300 XL Eddy-Current Proximity Systems
Complete 5 mm / 8 mm / 11 mm Portfolio
(Compiled from Bently Nevada public web pages and the 3300 XL Installation Manual, Document 163930)

System Overview
The 3300 XL family is today’s most interchangeable and rugged eddy-current measurement system for fluid-film bearing machinery such as steam turbines, compressors and pumps. All variants are API 670 compliant and consist of three field-interchangeable components:
• Probe (the tip that faces the shaft)
• Extension Cable (connects probe to the proximitor)
• Proximitor® Sensor (the signal conditioning unit)

Quick Comparison – 5 mm vs 8 mm vs 11 mm

Bill of Materials (with representative ordering numbers)

A. 3300 5 mm Proximity Probe System
• 3300 5 mm Probe – e.g. 330101-00-08-10-02-00
• 3300 XL 5 mm Extension Cable – e.g. 330130-080-00-00
• 3300 XL 5 mm Proximitor Sensor – e.g. 330180-50-00

B. 3300 XL 8 mm Proximity Probe System
• 3300 XL 8 mm Probe – e.g. 330104-00-12-10-02-00
• 3300 XL 8 mm Extension Cable – e.g. 330130-040-01-05
• 3300 XL 8 mm Proximitor Sensor – e.g. 330180-90-00

C. 3300 XL 11 mm Proximity Probe System
• 3300 XL 11 mm Probe – e.g. 330701-00-16-10-02-00
• 3300 XL 11 mm Extension Cable – e.g. 330730-040-02-00
• 3300 XL 11 mm Proximitor Sensor – e.g. 330780-50-00

Universal Technical Highlights
• Patented ClickLoc™ gold-plated connectors – finger-tighten and self-lock, no tools required.
• CE-marked, RF-immune proximitors mount directly in glass-fiber enclosures, reducing wiring cost.
• Factory calibrated on AISI 4140 steel; optional customer-specific target calibration available.
• Probe and extension cable are field-swappable within the same XL system without re-calibration.

Installation Essentials
• 1 m integral systems eliminate the extension cable where space permits.
• Minimum bend radius: 25 mm for probe lead, 51 mm for extension cable.
• When probe-to-extension junction is exposed to turbine oil, use the supplied ClickLoc connector protector rather than silicone tape.
• Proximitor mounting footprint is identical to legacy 4-hole brackets; no re-drilling for retrofits.

Selection Guide
Space-constrained → 3300 5 mm
General-purpose, highest reliability → 3300 XL 8 mm
Large shaft displacement or low-speed high-amplitude machines → 3300 XL 11 mm

For complete ordering codes (thread types, armor options, ETR cables), download the 3300 XL Series Installation and Maintenance Manual (Document 163930) from the Bently Nevada website or contact your local sales and service engineer.