Description
Bently Nevada 3300/20-13-03-01-00-00 Dual Vibration Monitor Module
Configured for dual-channel radial vibration and axial position monitoring in Bently Nevada 3300 Machinery Protection System, the Bently Nevada 3300/20-13-03-01-00-00 (3300/20 Dual Vibration Monitor module) provides direct physical/electrical execution for two independent proximity transducer input channels used in shaft motion measurement.
Suffix Breakdown & Model Matrix
The configuration string -13-03-01-00-00 represents factory-defined options applied to the base 3300/20 monitor platform. No further decoding is assumed beyond manufacturer-defined ordering structure:
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Full Model: 3300/20-13-03-01-00-00
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Base Module: 3300/20 Dual Vibration Monitor
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Option Fields: 13 / 03 / 01 / 00 / 00 (factory configuration set)
Hardware Specifications
| Parameter |
Specification |
| ModelBrand |
Bently Nevada 3300/20-13-03-01-00-00 |
| OperatingTemp |
0 degC to 65 degC (typical 3300 platform range) |
| PowerConsumption |
Not specified |
| Channels |
2 independent vibration/position inputs |
| Input Type |
Proximitor-based eddy current transducer signals |
| Output Interface |
Analog proportional outputs + buffered signal access |
| Alarm Outputs |
Relay-based Alert and Danger outputs |
Bently Nevada Eddy-Current Scaling and Signal Integrity Behavior
The module processes eddy-current probe signals with scaling referenced to calibrated gap voltage behavior derived from proximitor conditioning circuits. Signal validation includes proportional conversion of probe gap variations into DC voltage levels (commonly referenced to negative voltage swing behavior such as -10 VDC full-scale mapping in related systems). Cross-channel coupling suppression is implemented through isolated signal paths to prevent measurement contamination between axes. The signal chain is designed to maintain stability under rotor dynamic variation, where phase shift and amplitude distortion must remain within defined monitoring tolerance limits.
Frequently Asked Questions
Q: Does the module support hot-swap replacement in energized backplanes?
A: The 3300 series architecture does not guarantee hot-swap operation. Removal or insertion typically requires controlled shutdown to avoid transient signal disturbance on transducer loops.
Q: What is the relationship between input scaling and probe gap voltage?
A: Input scaling is directly derived from eddy-current probe linear range calibration. The proximitor output is mapped to a conditioned DC voltage proportional to shaft displacement.
Q: Are both channels electrically isolated?
A: Channels are designed with internal signal separation to reduce cross-talk; however, complete galvanic isolation is not a default feature of the 3300/20 base design.
Field Installation Guidelines
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Ensure backplane connector seating is fully engaged to maintain stable channel referencing.
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Maintain proper coaxial shielding continuity from proximity probe to monitor input terminals.
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Route transducer cables separately from high-noise power conductors to minimize induced signal distortion.
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Verify correct probe-to-proximitor pairing before energizing the system.
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Avoid bending radius violations on extension cables to prevent impedance variation.
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Confirm chassis grounding integrity to maintain measurement reference stability.
