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Product Overview
The 3300/03 serves as the main chassis for housing Bently Nevada 3300 series monitoring modules. This rack system provides mechanical support and backplane connectivity for up to ten plug-in cards. Facilities rely on this chassis for organizing vibration monitoring components in a compact footprint. The 3300/03 includes an integral power supply slot and cooling provisions for thermal management.
Key Specifications
| Parameter | Specification |
|---|---|
| Model | 3300/03 |
| Module Slots | 10 (standard configuration) |
| Power Supply Slot | 1 (dedicated) |
| Backplane Type | Passive, with signal routing |
| Bus Connectivity | Power, ground, and signal buses |
| Cooling | Internal fan (forced air) |
| Mounting | 19-inch rack or panel |
| Dimensions | 482 mm × 178 mm × 280 mm |
| Weight | 5.5 kg (empty chassis) |
| Material | Cold-rolled steel (powder coated) |
| Color | Beige or black (depending on revision) |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +70°C |
| Humidity Range | 5% to 95% RH (non-condensing) |
| Mounting Holes | Standard EIA rack spacing |
| Airflow | Front to rear (forced convection) |
| Cable Entry | Rear or bottom access |
| Grounding | Dedicated earth stud |
| Fuse Protection | Power supply input fuse |
| Indicator LEDs | Power ON (on rear panel) |
Chassis Design and Construction
The 3300/03 features a rugged cold-rolled steel housing that protects internal modules effectively. This chassis measures 482 mm wide, 178 mm high, and 280 mm deep for standard rack compatibility. The empty chassis weighs 5.5 kg, while fully populated systems weigh considerably more. A durable powder-coated finish resists scratches and corrosion in industrial environments. The chassis includes front bezels that cover module fronts for a professional appearance.
Slot Configuration and Capacity
The 3300/03 provides ten slots for housing various 3300 series monitoring modules. Each slot accommodates standard plug-in cards such as vibration monitors, position monitors, and temperature modules. One dedicated slot holds the power supply module for the entire system. Users can mix and match different module types within the available slots. This flexible configuration enables customized monitoring solutions for specific application requirements.
Backplane and Connectivity
A passive backplane behind the module slots handles all power distribution and signal routing. This backplane carries power supply voltages to each module through dedicated traces. The backplane also provides communication paths between modules when required. The 3300/03 includes a dedicated earth ground stud for proper system grounding. Installers can access the rear panel for wiring and cable connections.
Cooling and Thermal Management
The 3300/03 incorporates a forced-air cooling system with an internal fan assembly. This fan draws cool air from the front and exhausts warm air through the rear. The airflow path ensures that all modules receive adequate cooling during operation. The fan operates continuously while the chassis has power applied. Users should maintain proper clearance at both ends for unobstructed airflow.
Mounting and Installation Options
The 3300/03 fits standard 19-inch equipment racks using EIA-standard mounting holes. Users can also mount the chassis directly to panels or workbenches using appropriate brackets. The chassis occupies 4U of vertical rack space, which is 178 mm in height. Installers should allow sufficient clearance at the rear for cable management. The bottom of the chassis includes knockouts for cable entry.
Compatibility with 3300 Series Modules
The 3300/03 accommodates the full range of Bently Nevada 3300 series monitoring modules. This chassis supports the 3300/12 and 3300/14 power supplies for system power. The chassis also houses 3300/25 accelerometer monitors and 3300/20 displacement monitors. The system monitor provides a unified platform for comprehensive machinery protection solutions.
Maintenance and Operational Considerations
Operators can replace modules without removing the chassis from the rack. The passive backplane design allows hot-swapping of most monitoring modules. Periodic cleaning of the fan inlet prevents dust accumulation and maintains cooling efficiency. Users should inspect the fan operation regularly to prevent overheating of installed modules. The chassis requires minimal maintenance beyond periodic cleaning and fan inspection.
Application and System Integration
The 3300/03 forms the foundation for complete Bently Nevada 3300 monitoring systems. This chassis organizes multiple measurement types into a single, unified enclosure. The system monitor supports applications in power generation, oil and gas, and heavy industry. Plant engineers can integrate this chassis with existing DCS and PLC systems through analog outputs. The 3300/03 provides a reliable mechanical platform for critical machinery protection.