The Bently Nevada 3300/20 Dual Thrust Monitor is a rack-mounted module engineered for precise axial thrust position measurement in critical rotating machinery, including turbines and compressors. This specific model, 3300/20-12-01-01-00-00, is configured for dual-channel thrust monitoring, providing continuous analysis of axial displacement against defined alarm setpoints. By detecting bearing wear or potential mechanical failure early, the module facilitates effective predictive maintenance strategies and minimizes unplanned downtime.
Features
Dual-channel axial thrust monitoring for comprehensive machine protection.
Continuous parameter comparison against user-defined Alert and Danger alarm setpoints.
Integrated relay outputs for automated alarm actuation.
Front-panel LED indicators for quick status verification of OK, Bypass, Alert, and Danger states.
Configured for use with standard proximity probes and Proximitor sensors.
Applications
Axial position monitoring for steam and gas turbines.
Thrust bearing wear detection in centrifugal compressors.
Critical asset protection in power generation and petrochemical facilities.
Integration into existing Bently Nevada 3300 monitoring racks.
Technical Specifications
Model
3300/20-12-01-01-00-00
Brand
Bently Nevada
Series
3300
Operating Temperature
0 to 60 degC
Power Consumption
~1.5 W
Input Type
Proximity probe signals via Proximitor sensors
Sensitivity
200 mV/mil (8 V/mm) or 100 mV/mil (4 V/mm)
Signal Accuracy
+/- 0.33% typical, +/- 1% max at 25 degC
Output Signals
+4 to +20 mA, +1 to +5 VDC, 0 to -10 VDC
Installation Guidelines
Ensure the 3300 rack is powered down before inserting or removing the module to prevent electrical damage.
The module must be seated firmly in the designated rack slot to ensure proper backplane connectivity.
Use shielded cabling for all transducer inputs to minimize EMI interference.
Verify that proximity probe gaps are calibrated according to the machine manufacturer's specifications.
Maintain adequate ventilation around the rack to ensure the ambient temperature remains within the 0 to 60 degC operating range.
Handle with standard ESD precautions to protect internal circuitry.
FAQ
What does the 12 suffix denote in this model?
The 12 suffix indicates the dual-channel thrust configuration, allowing the monitor to process two independent axial displacement inputs simultaneously.
Is this module compatible with existing 3300 racks?
Yes, this module is designed for the standard 3300 series rack architecture. Ensure your rack backplane configuration supports the 3300/20 module type.
