The GE / Bently Nevada 3300/55-01-04-03-03-00-00-05-00 is a dual-channel velocity monitor designed for continuous machinery vibration surveillance in API 670 compliant systems. It accepts signals from Velomitor®, High-Temperature Velomitor Systems (HTVS), or Velocity Seismoprobe® transducers without requiring interface modules. Field-programmable filter corner frequencies and sensitivity settings enable rapid deployment across diverse monitoring applications.
## Technical Specifications
**Input Signal Conditioning**
• Input signal range: -10 Vdc to +10 Vdc
• Frequency response (Velocity Seismoprobe®): 3 Hz to 10,000 Hz (180 to 600,000 cpm) at -3 dB nominal
• Frequency response (HTVS and Velomitor®): 3 Hz to 3,000 Hz (180 to 180,000 cpm) at -3 dB nominal
• High-pass filter: Selectable from over 450 frequencies, 3 Hz to 400 Hz (180 to 24,000 cpm)
• Low-pass filter: Selectable from over 500 frequencies, 24 Hz to 3,000 Hz (1,440 to 180,000 cpm)
• Filter topology: 2-pole (40 dB/decade, 12 dB/octave); corner frequencies nominally -3 dB from passband
• Programmable sensitivity: 500 mV/in/s, 145 mV/in/s, or 100 mV/in/s via jumpers
• Integration: User-selectable per channel
**Output Specifications**
• Buffered transducer outputs: One coaxial connector per channel (front panel) and one terminal connection per channel (rear panel), both short-circuit protected
• Buffered displacement output signal: 200 mV/mil (8 V/mm)
• Voltage outputs (+1 Vdc to +5 Vdc): ±1.1% of signal accuracy, ±10 mV offset
• Voltage outputs (0 to -10 Vdc): ±1.1% of signal accuracy, ±15 mV offset
• Current outputs (+4 to +20 mA): ±0.7% of signal accuracy, ±0.09 mA offset
• Output impedance (voltage): 100 Ω; minimum load resistance 10 kΩ
• Voltage compliance (current): 0 to +12 Vdc across load (0 to 600 Ω load resistance)
## Key Features
• Two independent monitoring channels for simultaneous dual-transducer surveillance
• Field-reprogrammable corner frequencies via plug-in jumpers — no interface modules required
• Dual output formats: buffered transducer outputs plus isolated voltage/current outputs
• Compatible with industry-standard Bently Nevada transducer family
## Compatibility & Integration
Works with Velomitor®, High-Temperature Velomitor Systems (HTVS), and Velocity Seismoprobe® transducers. Integrates into Bently Nevada 3300 machinery protection systems meeting API 670 requirements.
