Product Overview

The Bently Nevada 3300/16 is a high-performance, two-channel vibration monitoring module engineered for the legacy 3300 Machinery Protection System. This module is primarily designed to process signals from proximity probes to measure radial vibration (shaft dynamic motion) relative to the bearing housing. By providing continuous surveillance of rotating shafts, the 3300/16 serves as a critical component of Turbine Supervisory Instrumentation (TSI). It enables industrial operators to observe real-time peak-to-peak vibration levels, ensuring that any mechanical instability—such as unbalance, misalignment, or oil whirl—is detected instantly to prevent catastrophic machine failure.

Hardware Parameters and Technical Specifications

The 3300/16 module is characterized by its high-fidelity analog signal conditioning and rugged front-panel interface, built to withstand the rigorous electrical noise of industrial environments.

• Model Number 3300/16

• Monitor Type Dual-channel radial vibration monitor

• Transducer Inputs Accepts inputs from two independent non-contacting proximity transducer systems (e.g., 3300 XL 8mm)

• Measurement Units Configurable for metric (µm) or English (mils) peak-to-peak displacement

• Signal Outputs Provides 4-20 mA proportional outputs for each channel and buffered raw dynamic signals via front-panel BNC connectors

• Alarm Configuration Independent Alert and Danger setpoints for both channels with adjustable time delays

• Display Interface High-visibility LCD digital display showing continuous vibration levels for both points

• System Integrity Built-in "OK" circuit monitors the health of the transducer, extension cable, and internal monitor circuitry

• Physical Weight 1.00 kg

• Chassis Dimensions 15 x 10 x 5 cm

Industrial Applications and Operational Use Cases

The 3300/16 monitor is a global industry standard for the protection of medium-to-large rotating machinery across energy and manufacturing sectors.

• Steam and Gas Turbines Monitoring X-Y radial vibration at each bearing to ensure rotor stability and detect early signs of shaft bowing or bearing degradation.

• Centrifugal Compressors Critical protection against high-frequency vibration and surge conditions in high-pressure oil and gas processing.

• High-Speed Industrial Fans Continuous tracking of vibration levels in cooling tower fans and boiler draft fans to schedule predictive maintenance.

• Boiler Feed Pumps Real-time monitoring of pump shaft dynamics to prevent internal contact and mechanical seal failure.

• Hydroelectric Generators Measuring low-frequency shaft motion in large-scale vertical or horizontal water turbines.

The dual-channel architecture of the 3300/16 allows for "X-Y" configuration, which is essential for plotting shaft orbits and providing a comprehensive two-dimensional view of shaft motion within a bearing.