Bently Nevada 330101-16-28-10-12-CN 3300 XL 8 mm Proximity Probe

Product Overview

The 330101-16-28-10-12-CN is a high-precision 3300 XL 8 mm Proximity Probe featuring a 3/8-24 UNF thread and a non-armored design. As a cornerstone of the Bently Nevada 3300 XL transducer system, this eddy-current sensor is engineered for critical machinery protection, measuring vibration and position on fluid-film bearing machines. This specific configuration, with its 1.0 metre total length and FluidLoc cable, is extensively utilized in gas turbines, steam turbines, and high-speed centrifugal compressors. By delivering a standardized 200 mV/mil linear scale factor, the 330101 provides the high-fidelity data required for System 1 diagnostics, enabling operators to detect early signs of bearing wear or shaft instability before they escalate into costly mechanical failures.

Technical Data Matrix (Parameter Priority)

The following table encapsulates the rigorous technical specifications of the 330101-16-28-10-12-CN to ensure precise engineering alignment and SEO indexing.

Technical Performance FAQ

Why is the "without armor" configuration used in the 330101-16-28-10-12-CN?The without armor version provides maximum flexibility for cable routing within tight conduits or internal machine housings where external mechanical abrasion is not a primary risk. This reduces the overall cable diameter, making it easier to pull through complex internal paths during installation.

What is the specific benefit of the FluidLoc cable (Option 12)?The FluidLoc cable is engineered with a proprietary internal seal that prevents lubrication oil or other process fluids from leaking through the inside of the coaxial cable. This is a critical safety and maintenance feature for probes mounted in pressurized oil environments.

How does the 1.6 in unthreaded length affect installation?The 1.6 in (16) unthreaded section allows for rapid insertion into the mounting bracket or sleeve without the need for constant threading. It provides a smooth surface for the initial part of the probe body, simplifying the gapping process in deep bearing housings.

Field Engineering & Installation Protocol

• Mounting & Torque Limits: When installing the 3/8-24 UNF probe, the maximum recommended torque is 13.5 Nm (10 ft-lb). Exceeding this limit can damage the stainless steel threads or cause internal stress on the sensing coil. Always use a calibrated torque wrench for final seating.

• Coaxial Connector Handling: The ClickLoc connector is designed for high-vibration environments. Ensure you hear the positive "click" during connection. Do not use pliers to tighten the miniature coaxial connectors; finger-tight plus the locking mechanism is sufficient for signal integrity.

• Gap Voltage Calibration: For a standard 3300 XL system, the probe should be gapped to -10.0 VDC (using a voltmeter at the Proximitor output) to ensure it sits at the center of the 80 mil (2.0 mm) linear range. This provides the most accurate measurement of dynamic shaft vibration.

Engineering Advantages & Material Integrity

The Bently Nevada 330101-16-28-10-12-CN represents the gold standard in proximity sensing, featuring a PPS (Polyphenylene sulfide) tip that is chemically inert to most industrial solvents and oils. Its design ensures a thermal stability that remains consistent even at temperatures up to 177 Celsius. As an Original and New component, it ensures total downward compatibility with existing 3300 XL Proximitors. The inclusion of the CN agency approval confirms its compliance with specific international safety and technical standards, making it the preferred choice for global plant operators prioritizing reliability in their Turbine Supervisory Instrumentation (TSI) suites.