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The 3300/16-12-01-02-01-00-00 is a dual-channel vibration monitoring module for the Bently Nevada 3300 machinery protection rack system. It processes proximity probe signals to continuously measure radial vibration (peak-to-peak) and DC gap voltage, providing early detection of imbalance, misalignment, and bearing wear.
The module features a front-panel display for simultaneous vibration and gap indication. Integrated OK self-check circuitry continuously monitors probe and extension cable integrity to prevent false trips due to sensor faults.
| Parameter | Specification |
|---|---|
| Model | 3300/16 |
| Full Order Code | 3300/16-12-01-02-01-00-00 |
| Monitoring Type | Radial Vibration (Pk–Pk) & Gap Voltage |
| Channels | Dual channel (independent or XY pair) |
| Agency Approval (01) | CSA/NRTL/C Class I, Div 2, Groups A, B, C, D |
| Intrinsic Safety (02) | External barriers included |
| Alarm Relay Option (01) | Epoxy-sealed relays |
| Recorder Output | 4–20 mA proportional output |
| Accuracy | ±1% of full scale at 25°C |
| Frequency Response | 4 Hz – 4,000 Hz (240–240,000 CPM) |
| Operating Temperature | -30°C to +65°C |
Centrifugal pumps and compressors
Industrial fans and blowers
Steam turbines
Large electric motors with fluid-film bearings
What does the “01” agency approval indicate?
It confirms CSA/NRTL/C certification for Class I, Div 2 hazardous locations in North America.
Why is gap voltage important?
Gap voltage reflects shaft position relative to the probe. Variations indicate bearing wear or shaft displacement, enabling predictive maintenance before vibration alarms occur.