The Bently Nevada 3300/55 Dual Velocity Monitor is a high-reliability, rack-mounted module engineered for the 3300 Series machinery protection system. This unit provides continuous monitoring of casing vibration velocity by interfacing with Velomitor piezo-velocity sensors. It features two independent channels that process vibration data and compare it against user-defined Alert and Danger setpoints, ensuring critical protection for rotating equipment such as industrial turbines, compressors, motors, and pumps.
Features
Dual-channel velocity measurement for comprehensive machine monitoring.
Compatible with Velomitor piezo-velocity transducers.
Integrated alarm logic with dedicated relay outputs for Alert and Danger states.
Proportional 4-20 mA output signals for seamless integration with external DCS or PLC systems.
Front-panel LED status indicators for OK, Bypass, Alert, and Danger conditions.
Applications
This monitor is designed for critical asset protection in heavy industrial environments, specifically monitoring casing vibration in high-speed rotating machinery where velocity-based vibration analysis is required for condition monitoring and safety shutdown.
Technical Specifications
Model
3300/55-01-04-12-12-00-00-05-01
Brand
Bently Nevada
Series
3300
Input Type
Two-channel Velomitor piezo-velocity sensor
Output Signals
4-20 mA proportional, Relay outputs
Operating Temperature
0 degC to +60 degC
Power Consumption
1.5 W (typical)
Installation Guidelines
Ensure the 3300 rack is properly grounded according to site electrical standards before module insertion.
Always power down the rack chassis before installing or removing the 3300/55 module to prevent damage to backplane connectors.
Use shielded twisted-pair cabling for sensor inputs to minimize electromagnetic interference (EMI).
Maintain adequate ventilation clearance around the rack to ensure operating temperatures remain within the 0 degC to +60 degC range.
Verify configuration jumpers and software settings match the specific machine requirements before finalizing the commissioning of the alarm logic.
FAQ
Does this module include intrinsic safety barriers?
No, the 00 suffix in the barrier option position indicates that this specific configuration does not include internal intrinsic safety barriers.
What type of sensors are compatible with this monitor?
This module is specifically configured for use with Bently Nevada Velomitor piezo-velocity sensors.
Can I use this module for independent monitoring?
Yes, the 3300/55 provides two independent channels, allowing for the monitoring of two separate points on a machine or two different machines within the same rack slot.
