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The Bently Nevada 3300/20-13-03-01-00-00 is a high-reliability dual-channel monitoring module designed for the 3300 Machinery Protection System. It is primarily used to track the axial (thrust) position of a rotating shaft relative to the thrust...
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The Bently Nevada 3300/20-13-03-01-00-00 is a high-reliability dual-channel monitoring module designed for the 3300 Machinery Protection System. It is primarily used to track the axial (thrust) position of a rotating shaft relative to the thrust bearing clearance. By providing real-time data on shaft displacement, this module acts as a critical safety barrier, preventing catastrophic damage from rotor-to-stator contact or thrust bearing degradation.
Optimized for dual-axis monitoring, it processes signals from two independent Proximitor sensors simultaneously. The 3300/20-13-03-01-00-00 integrates seamlessly into the 3300 rack backplane, providing local visual feedback via its front-panel meter and remote signal transmission for integration with DCS/PLC systems. Its epoxy-sealed relay design ensures long-term contact integrity in harsh environments prone to corrosion and vibration.
| Specification | Details |
|---|---|
| Model Number | 3300/20-13-03-01-00-00 |
| Monitoring Type | Dual-Channel Axial Thrust Position |
| Full-Scale Range | 25-0-25 mils (Standard range for thrust displacement) |
| Transducer Interface | Compatible with 7200 14mm or 3300 HTPS Proximitor systems |
| Scale Factor | 100 mV/mil (Standard proximity probe sensitivity) |
| Alarm Relay Type | Epoxy-sealed relays for maximum environmental protection |
| Agency Approval | Standard non-hazardous / general-purpose configuration |
This module is essential for high-speed rotating equipment such as steam turbines, centrifugal compressors, and large boiler feed pumps. It is the industry standard for protecting assets where axial movement beyond tolerances indicates imminent bearing failure or mechanical instability.
No, the 3300/20-13-03-01-00-00 is specifically configured for 14mm or HTPS systems (Option -03). For 8mm probes, a different transducer input option is required to ensure the correct linearization of the 100 mV/mil scale factor.
The epoxy-seal prevents contaminants and moisture from oxidizing the relay contacts, increasing the reliability of the "Alert" and "Danger" trip circuits over extended service periods.
You can use the buffered output BNC connectors on the front of the module to measure the DC gap voltage without disconnecting any field wiring. This provides an efficient way to verify the sensor gap during system setup or maintenance.
