SKU: 330876-02-10-00-00

Bently Nevada 330876-01-10-00-00 3300 XL 11mm Proximity Probe

The Bently Nevada 330876-01-10-00-00 is a 3300 XL 11mm proximity probe featuring a 1.0-meter cable and a 4.0 mm linear range. It provides high-accuracy vibration and displacement monitoring for large industrial rotating assets.

Technical Specification Overview

The Bently Nevada 330876-01-10-00-00 functions as a rugged, non-contacting sensor designed for the 3300 XL 11mm Proximity Transducer System. This probe measures both static (displacement) and dynamic (vibration) distances by generating an eddy current field that interacts with a target metal surface. Because it offers a wider linear range than standard 8mm probes, this 11mm variant is essential for monitoring large-scale machinery where greater shaft movement or thermal expansion is expected.

Design and Functional Capabilities

Engineers specifically optimized the 3300 XL 11mm probe to provide a linear range of 4.0 mm (160 mils), which is double the capacity of standard systems. This model features a 1/2-20 UNF threaded body and a 1.0-meter integral cable. Furthermore, the advanced construction of the probe tip utilizes a hermetically sealed polyphenylene sulfide (PPS) resin, which ensures the internal coil remains protected from oil, steam, and chemical ingress even in the most demanding bearing housings.

Manufacturer: Bently Nevada
Model Number: 330876-01-10-00-00
System Series: 3300 XL 11mm
Unthreaded Length: 1.0 inch
Overall Case Length: 1.0 inch
Total Cable Length: 1.0 Meter
Connector Option: Miniature coaxial ClickLoc connector
Agency Approval: Standard
Mounting Thread: 1/2-20 UNF

Operational Impact and Industrial Applications

This proximity probe actively drives predictive maintenance strategies by delivering a continuous stream of high-fidelity data to Turbine Supervisory Instrumentation (TSI). Consequently, maintenance teams can identify early warning signs of mechanical distress, such as excessive axial float, rotor imbalance, or bearing degradation. Moreover, the 3300 XL 11mm system maintains superior thermal stability, which allows for accurate measurements even as machine temperatures fluctuate during startup and full-load operation.

Specific industrial applications include:

Axial Position Monitoring: Tracking the thrust displacement of rotors in utility-scale steam and gas turbines.
Radial Vibration: Measuring shaft orbit and dynamic movement in large centrifugal compressors.
Differential Expansion: Monitoring the relative movement between the machine casing and the rotor.

Mechanical Integrity and Resilience

To ensure maximum durability, Bently Nevada utilizes a 304 stainless steel case and a high-performance coaxial cable jacket. The patented ClickLoc connector technology provides a secure, vibration-resistant electrical path that prevents accidental signal loss. This mechanism is critical in high-vibration environments where standard threaded connectors often loosen over time. Additionally, the probe’s design effectively rejects electromagnetic interference (EMI), ensuring that the Proximitor sensor receives a clean signal for precise diagnostic analysis.