The Bently Nevada 3300/55 Dual Velocity Monitor is a precision-engineered module designed for the 3300 Series monitoring system. This unit provides continuous, reliable casing vibration measurement by processing signals from Velomitor piezo-velocity sensors. It features two independent channels, allowing for simultaneous monitoring of critical rotating equipment such as industrial turbines, centrifugal compressors, motors, and large pumps. By comparing real-time vibration velocity against user-defined alarm setpoints, the module ensures proactive machinery protection.
Features
Dual-channel architecture for independent monitoring of two vibration points.
Compatible with standard Velomitor piezo-velocity sensors.
Integrated alarm management with Alert and Danger relay outputs.
Proportional 4-20 mA output signals for integration into DCS or PLC systems.
Front-panel LED status indicators for OK, Bypass, Alert, and Danger conditions.
Designed for high-density rack mounting within the 3300 Series chassis.
Applications
This monitor is essential for condition monitoring and machinery protection in heavy industrial environments. It is primarily used in power generation, oil and gas, and petrochemical facilities to detect excessive casing vibration, thereby preventing catastrophic equipment failure and minimizing unplanned downtime.
Technical Specifications
Model
3300/55-01-04-02-02-00-00-05-00
Brand
Bently Nevada
Series
3300
Input Type
2x Velomitor piezo-velocity sensors
Outputs
4-20 mA, Relay (Alert/Danger), Dynamic Signal
Operating Temp
0 degC to +60 degC
Power Consumption
Approx. 1.5 W
Installation Guidelines
Ensure the 3300 Series rack is de-energized before inserting or removing the module to prevent electrical damage.
Verify that the module is fully seated in the backplane to ensure proper communication and power distribution.
Use shielded cabling for sensor inputs to minimize electromagnetic interference (EMI) and noise in industrial environments.
Maintain proper ventilation in the rack enclosure to keep ambient temperatures within the specified 0 to 60 degC range.
Follow standard ESD (Electrostatic Discharge) handling procedures when touching the module circuitry.
FAQ
What is the primary function of the 3300/55 monitor?
The 3300/55 is designed to measure casing vibration velocity using Velomitor sensors and provide alarm relay outputs to protect machinery from excessive vibration.
Does this module include safety barriers?
No, the configuration suffix '00' for the barrier option indicates that this unit is supplied without intrinsic safety barriers.
How are the alarm thresholds configured?
Alarm setpoints for Alert and Danger levels are configured via the 3300 system software to match the specific vibration tolerances of your rotating equipment.
