Overview
The Bently Nevada 3300/55-03-01-15-15-00-00-01-00, also cataloged as the 3300/55 Dual Velocity Monitor, operates as a dedicated hardware component for dual-channel vibration velocity and integrated displacement monitoring within the Bently Nevada 3300 Machinery Protection System.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 3300/55-03-01-15-15-00-00-01-00 |
| Brand | Bently Nevada |
| Product Type | Dual Velocity Monitor |
| System Platform | Bently Nevada 3300 Machinery Protection System |
| Input Channels | 2 independent vibration monitoring channels |
| Compatible Transducers | 9200 or 74712 Seismoprobe Transducers, 500 mV/in/s, 2-wire |
| Measurement Function | Velocity monitoring and integrated displacement measurement |
| Channel Range | Metric displacement scale, typically 0 – 500 um peak-to-peak |
| Frequency Response | 3 Hz to 10,000 Hz nominal |
| Alarm Outputs | Alert and Danger relay outputs with epoxy-sealed relays |
| Accuracy | +/- 0.33% of full scale typical, +/- 1% maximum at 25 deg C |
| Operating Temp | 0 deg C to +65 deg C |
| Humidity | Up to 95% non-condensing |
| Power Consumption | Approx. 1.5 W nominal |
| Weight | Approx. 1.0 kg |
| Dimensions | Standard 3300 rack module format |
Rotor Dynamics Signal Processing and Vibration Monitoring
The Bently Nevada 3300/55 receives velocity signals from compatible seismic transducers and processes vibration data for continuous machinery condition monitoring. It measures two independent channels and converts velocity input signals into displacement-related parameters for bearing housing and structural vibration analysis.
In addition, the module applies defined signal conditioning paths to maintain measurement accuracy across rotating equipment operating ranges. The monitor supports rotor dynamics evaluation by tracking casing vibration behavior transferred from rotating shafts through bearing structures.
The module operates with velocity transducer inputs rather than eddy-current probe systems; therefore, eddy-current probe scaling and gap voltage validation (-10 VDC targets) apply only to compatible Bently Nevada proximity monitoring modules. The 3300/55 focuses on seismic vibration signal acquisition and processed velocity/displacement outputs.
Frequently Asked Questions
Q: Does the Bently Nevada 3300/55 support eddy-current proximity probes?
A: No. The 3300/55 is designed for velocity seismic transducers such as 9200 and 74712 Seismoprobe devices. Eddy-current probe scaling and gap voltage validation are handled by proximity monitor modules.
Q: Can the module operate with two independent vibration channels?
A: Yes. The 3300/55 provides two independent monitoring channels, allowing separate vibration measurements from Channel A and Channel B inputs.
Q: What type of relay outputs are included in this configuration?
A: The 3300/55-03-01-15-15-00-00-01-00 configuration includes epoxy-sealed relay outputs for alarm functions.
Field Installation Guidelines
- Install the module in a compatible Bently Nevada 3300 rack position according to rack configuration requirements.
- Connect Seismoprobe transducer wiring using the specified two-wire signal interface and maintain correct polarity.
- Route vibration signal cables separately from high-voltage power conductors to reduce electrical interference.
- Connect cable shields according to site grounding practices to minimize signal noise.
- Verify transducer mounting surfaces are mechanically secure because loose mounting can introduce measurement errors.
- Confirm channel configuration, alarm levels, and signal scaling before placing the monitor into machinery protection service.
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