Description
Bently Nevada 3300/61
- Technical & Performance Parameters:
- Channel quantity: 2 channels
- Input transducer: 3300 series eddy‑current proximity probe system
- Vibration measuring range: 0‑80 mil peak‑to‑peak
- Frequency response: 4 Hz ~ 4000 Hz
- Output: Amplitude analog signal, phase angle signal
- Power supply: Supplied via 3300 rack backplane
- Operating temperature: ‑40 °C ~ +70 °C
- Material Composition: Aluminum alloy front panel with LED indicator array; high‑precision multilayer PCB integrating phase demodulation circuit, signal processing chip, alarm drive circuit; metal lock mechanism for rack mounting.
- Structural Characteristics: Single‑width plug‑in rack module for 3300 chassis. Front panel displays channel status, OK status and alarm status. Rear edge connector connects backplane power, transducer signal, alarm bus and analog output. Hot‑swap supported within rack.
- Working Principle: Receives gap voltage signal from eddy‑current proximity probes. Internal circuit demodulates vibration amplitude and phase angle referenced to key‑phasor pulse signal. Compares amplitude value with configured alarm thresholds to activate relay alarms. Converts amplitude and phase data into analog outputs for external recording and analysis.
- Application Scenarios: Rotor dynamic monitoring of steam turbines, large centrifugal compressors, turbo‑generators. Used for shaft orbit analysis, unbalance diagnosis, rotor misalignment analysis, rotor startup and shutdown vector trend recording. Mainly applied in power generation, petrochemical and heavy‑industry critical equipment protection.
- Installation Requirements: Install inside standard 3300 rack. Complete key‑phasor signal wiring. Confirm proximity probe system matches module input requirement. Signal cables must keep distance from high‑voltage and large‑current cables. Complete parameter configuration including probe sensitivity, alarm thresholds and filter before commissioning. Guarantee rack cooling air circulation.
- Usage Notes: Requires valid key‑phasor input to obtain correct phase measurement. Verify probe gap voltage during commissioning. After clearing faults, reset latched alarms manually. Do not operate beyond environmental temperature limits. Avoid vibration impact to rack cabinet.
