Keterangan
Bently Nevada 3300/45 Dual Differential Expansion Monitor
Configured for differential thermal expansion measurement in the 3300 rack system, the Bently Nevada 3300/45-02-01-03-00 (3300/45 Dual Differential Expansion Monitor) provides direct physical/electrical execution of rotor-to-casing axial growth monitoring via proximity transducer signal conditioning and alarm relay logic processing.
Suffix Breakdown & Model Matrix
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3300/45: Dual Differential Expansion Monitor platform
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02 (A): Full-scale range 0 to 10 mm
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01 (B): 25 mm proximity transducer input configuration
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03 (C): Quad relay output module, epoxy-sealed relays
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00 (D): Standard agency configuration (no specific approval marking hardware)
HardwareSpecifications
| Parameter |
Specification |
| ModelBrand |
Bently Nevada 3300/45-02-01-03-00 |
| Origin |
USA |
| Weight |
1 kg |
| OperatingTemp |
0 degC to +65 degC |
| PowerConsumption |
Not specified (low-level rack module consumption) |
| Measurement Range |
0 to 10 mm full-scale differential expansion |
| Transducer Input |
25 mm proximity probe system compatible |
| Output Signal |
4-20 mA analog per channel |
| Relay Configuration |
Quad relay (Alert/Danger logic outputs) |
| Frequency Response |
0 to 10 Hz (-3 dB) |
Eddy-Current Probe Scaling and Gap Voltage Validation Behavior
The module processes eddy-current proximity probe signals with scaling aligned to long-stroke axial displacement measurement. Input conditioning validates gap voltage stability typically within negative DC bias operating regions used in Bently Nevada proximity systems (including -10 VDC excitation architecture). Signal path design prioritizes suppression of cross-channel coupling in multi-channel rack installations, ensuring separation between rotor axial displacement measurement and adjacent vibration monitoring modules within the same 3300 framework.
Frequently Asked Questions
Q: Can the module operate with non-25 mm proximity transducers?
A: No. Input scaling and linearization are fixed for 25 mm probe systems. Mismatched probe scaling results in non-linear displacement conversion.
Q: Does the relay output support hot-swap during operation?
A: Relay modules are not designed for live replacement under energized alarm states. Rack power isolation is required before module extraction.
Q: What is the backplane interaction behavior with other 3300 modules?
A: The module communicates via rack backplane power and signal routing without shared measurement data bus; channel isolation is maintained at hardware level.
FieldInstallationGuidelines
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Ensure rack backplane is de-energized before insertion or removal of the module
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Verify correct seating of 25 mm probe input connectors before powering system
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Maintain shield termination at designated rack ground point to reduce noise coupling
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Route proximity probe cabling separately from high-power switching conductors
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Confirm relay wiring separation between Alert and Danger outputs to prevent loop feedback
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Avoid bending coaxial diagnostic outputs beyond minimum bend radius to preserve signal integrity
