Description

The Bently Nevada 3300/55 Dual Velocity Monitor is a critical component of the 3300 Series machinery protection system. It is engineered to provide continuous monitoring of casing vibration velocity by interfacing with Velomitor piezo-velocity sensors. This module features two independent channels that compare real-time vibration data against user-defined alarm setpoints, ensuring reliable protection for rotating equipment such as turbines, compressors, motors, and pumps.

Features

• Dual-channel velocity monitoring for independent vibration analysis.
• Compatible with standard Velomitor piezo-velocity sensors.
• Integrated alarm and danger relay outputs for automated machinery trip functions.
• Provides proportional 4-20 mA outputs for integration with external control and data acquisition systems.
• Designed for seamless integration into the 3300 rack-based monitoring architecture.

Applications

This monitor is primarily used in industrial environments for the protection of critical rotating machinery. It is suitable for monitoring casing vibration in high-speed turbines, centrifugal compressors, large industrial motors, and pumps where velocity-based vibration monitoring is required to detect mechanical degradation or imbalance.

Technical Specifications

Installation Guidelines

• Ensure the 3300 rack is powered down before inserting or removing the monitor module to prevent electrical damage.
• Verify that the module is fully seated in the rack slot and that the front panel connectors are securely fastened.
• Use shielded cabling for all sensor inputs to minimize electromagnetic interference (EMI) and signal noise.
• Ensure proper grounding of the 3300 rack system according to the site-specific installation manual to maintain signal integrity.
• Handle the module using ESD-safe practices to prevent damage to sensitive internal electronic components.

FAQ

What is the primary function of the 3300/55 monitor?

The 3300/55 is designed to monitor casing vibration velocity using piezo-velocity sensors and provide alarm/trip relay logic to protect rotating machinery from damage.

Is this module compatible with other sensor types?

This specific configuration (15-15) is optimized for Velomitor piezo-velocity sensors. Refer to the Bently Nevada 3300 system documentation for compatibility with other sensor technologies.

Does this module require external barriers?

The suffix code 00 in the barrier option indicates that this unit is configured for standard input without intrinsic safety barriers.