Description
Bently Nevada 3300/55
- Technical & Performance Parameters:
- Channel quantity: 2 independent channels
- Supported transducer: Velomitor®, HTVS high‑temperature velocity transducer, Velocity Seismoprobe®
- Selectable sensitivity: 100 mV/in/s, 145 mV/in/s, 500 mV/in/s
- Frequency response: 1.5 Hz ~ 1000 Hz
- Measuring unit: inch/s RMS or mm/s RMS
- Power consumption: 1.5 W nominal
- Operating temperature: ‑40 °C ~ +70 °C
- Relative humidity: 5‑95 % non‑condensing
- Material Composition: Anodized aluminum front panel; industrial multilayer PCB with signal conditioning amplifiers, filter networks and relay drive circuits; metal locking hardware for rack fixation.
- Structural Characteristics: Single‑width plug‑in module for 3300 rack. Front panel fitted with channel status LED indicators, OK indicator, bypass indicator. Rear golden‑plated edge connector for backplane power, signal and relay bus. Supports in‑rack hot swap.
- Working Principle: Receives analog velocity signal output from seismic velocity transducers. Internal circuit completes amplification, filtering and RMS value calculation. Compares measured vibration velocity value against programmed alert and danger thresholds. Triggers corresponding relay alarm once threshold is exceeded. Converts vibration measurement value into standard analog signal output for external system acquisition.
- Application Scenarios: Vibration monitoring for turbine casings, compressor housings, large fan units, heavy‑duty pumps and industrial motors. Used for detecting mechanical unbalance, structural looseness, bearing housing defects. Widely deployed in power plant, petrochemical and refinery machinery protection systems.
- Installation Requirements: Insert into standard 3300 series rack slot. Confirm backplane power specification matches module requirement. Configure transducer sensitivity jumpers according to actual velocity sensor model. Separate transducer signal wiring from heavy‑current cables. Ground shield of transducer cable at single point following system specification. Ensure rack ventilation to prevent overheating.
- Usage Notes: Confirm transducer type matches module input interface. Set filter parameters matching machine rotating frequency. When performing maintenance bypass, pay attention to protection logic validity. Latched alarms require manual reset after fault removal. Avoid mechanical impact during module disassembly and assembly. Do not alter internal circuit components arbitrarily.
