Bently Nevada 330780-51-CN 3300 XL 11 mm Proximity Sensor Transducer System

The Bently Nevada 330780-51-CN is a high-performance 3300 XL 11 mm Proximitor Sensor engineered for the rigorous demands of industrial machinery protection. As part of the renowned 3300 XL series, this transducer system provides accurate, real-time measurements of radial vibration and axial (thrust) position, forming the backbone of any effective predictive maintenance strategy .

Unlike standard sensors, the 11 mm system is specifically designed for applications requiring an extended linear range. It delivers a linear output of 100 mV/mil (3.94 V/mm) over a range of up to 160 mils (4 mm) , making it the ideal solution for measuring axial displacement and differential expansion in large rotating equipment .

Key Technical Specifications

Model: 330780-51-CN

Series: 3300 XL

Type: Proximitor Sensor (Part of a system with 11 mm probe and extension cable)

System Length: 5.0 meters (16.4 feet) 

Probe Diameter: 11 mm

Mounting: DIN-rail mountable for easy installation in panel enclosures 

Material: Rugged A380 Aluminum housing 

Temperature Range: Operates reliably from -35°C to +85°C 

Agency Approval: The "-CN" suffix denotes specific agency approvals for global compliance 

Advanced Eddy Current Technology

The 330780-51-CN utilizes eddy current principles to measure the gap between the probe tip and a conductive rotating shaft without physical contact. This non-contact method ensures high accuracy and longevity, even in harsh environments containing oil, steam, or debris. The sensor excels at filtering out electromagnetic and radio frequency interference (RFI/EMI), ensuring signal integrity for the critical data sent to monitoring systems like the Bently Nevada 3500 .

Applications in Heavy Industry

This Proximitor Sensor is a critical component for condition monitoring in sectors such as power generation, oil and gas, petrochemical, and refining . It is specifically utilized for:

Thrust Position Measurement: Monitoring axial movement to prevent catastrophic thrust bearing failure.

Vibration Monitoring: Detecting shaft radial vibration in turbines, compressors, and pumps .

Differential Expansion: Measuring the expansion difference between the rotor and casing in steam turbines .

Rod Position/Settlement: Monitoring reciprocating compressor rod drop .

Enhanced Asset Management with 3300 XL Series

By converting physical measurements into a proportional DC voltage signal, the Bently Nevada 330780-51-CN empowers maintenance teams with actionable data. Implementing this 3300 XL sensor helps reduce unplanned downtime, optimize maintenance intervals, and extend the lifespan of critical rotating machinery. Its robust construction ensures compliance with API 670 standards, providing peace of mind for engineers worldwide .

For seamless integration and unparalleled reliability, the Bently Nevada 330780-51-CN 11 mm Proximity Sensor System remains the industry standard for protecting high-value industrial assets.

Keywords: Bently Nevada 330780-51-CN, 3300 XL Proximitor, 11 mm proximity sensor, vibration monitoring, eddy current transducer, machinery protection, industrial sensors, Bently Nevada parts.