Description
Bently Nevada 3300/55 Dual Velocity Monitor Module Type
Configured for vibration velocity signal conditioning and alarm processing in 3300 monitoring system architectures, the Bently Nevada 3300/55-03-04-14-14-00-00-04-00 (3300/55 Dual Velocity Monitor) provides direct electrical execution of dual-channel velocity measurement using conditioned transducer inputs and relay-based protection logic within the rack-mounted monitoring system.
Suffix Breakdown & Model Matrix
3300/55-03-04-14-14-00-00-04-00 configuration elements:
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3300/55: Dual Velocity Monitor base module
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03: Dual channel velocity input configuration (Channel A / Channel B)
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04: High Temperature Velomitor System (HTVS) input compatibility
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14: Channel A full-scale range 0 to 50 mm/s RMS
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14: Channel B full-scale range 0 to 50 mm/s RMS
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00: Standard approval configuration
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00: No internal intrinsic safety barrier integration
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04: Quad relay output assembly (alarm logic output stage)
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00: No trip multiply function enabled
Hardware Specifications
| Parameter |
Specification |
| ModelBrand |
Bently Nevada 3300/55-03-04-14-14-00-00-04-00 |
| Origin |
USA |
| Dimensions |
3300 rack full-height single slot module |
| OperatingTemp |
0 degC to 65 degC |
| PowerConsumption |
Backplane powered, exact value not specified |
| Input Type |
Dual velocity transducer inputs (HTVS compatible) |
| Output Signal |
4-20 mA DC per channel |
| Relay Output |
Quad hermetically sealed relay contacts |
| Full Scale Range |
0 to 50 mm/s RMS per channel |
| Frequency Response |
Typically 2 Hz to 10 kHz (system dependent) |
Eddy-Current Probe Scaling and Signal Conditioning Behavior
The Bently Nevada 3300/55 platform supports velocity signal conditioning aligned with transducer scaling characteristics derived from vibration velocity conversion chains. In extended 3300 system architectures, eddy-current probe scaling references are used to correlate displacement-derived dynamic motion with velocity-domain monitoring outputs where applicable.
Gap voltage validation routines reference standard -10 VDC target thresholds in proximity transducer systems to ensure linear operating region integrity, while cross-talk suppression is managed through channel isolation design and backplane routing separation. Rotor dynamics interpretation is handled through filtered RMS velocity extraction, reducing structural resonance coupling artifacts across measurement channels.
Frequently Asked Questions
Q: Can the 3300/55 module operate with hot-swappable replacement in an energized rack?
A: The module is not designed for hot-swap operation. Rack power removal is required prior to insertion or extraction to avoid backplane signal disruption.
Q: What is the backplane current dependency of the module?
A: Power is supplied via the 3300 chassis backplane. Exact current draw is not individually published and depends on relay state and output loading conditions.
Q: Are channel A and B electrically isolated?
A: Channels are processed independently with internal conditioning separation, but full galvanic isolation is not specified at channel input stage.
Field Installation Guidelines
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Ensure chassis power is removed before module installation or removal
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Verify correct slot alignment in 3300 system rack before insertion
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Maintain shield continuity on transducer cable grounding at designated rack earth points
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Avoid routing velocity input wiring parallel to high-noise power conductors
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Confirm relay output wiring separation for alarm and shutdown circuits
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Use correct torque and connector seating for rear terminal interface connections
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Verify full-scale range configuration prior to system commissioning
