Bently Nevada 3300/16-01-01-02 3300 Series Dual Vibration Monitor

Configured for high-precision physical gap and vibration signal transmission in 3500 and 3300 Machinery Monitoring Systems, the Bently Nevada 3300/16-01-01-02 (3300/16 Dual Vibration Monitor) provides direct physical/electrical execution. It continuously processes raw high-frequency radio frequency (RF) signals from proximity probe transducers to deliver continuous XY radial position and peak-to-peak shaft vibration metrics across critical rotating machinery trains.

Suffix Breakdown & Model Matrix

Hardware Specifications

Eddy-Current Signal Scaling & Proximity Probe System Calibration

The 3300/16 monitor maintains rigid electrical capacitance match across the eddy-current transduction circuit. Correct system tuning ensures the Proximitor Sensor maintains an accurate scale factor of 7.87 V/mm (200 mV/mil) when measuring target shaft deflection. In field commissioning, verified gap voltage validation (-10 VDC targets representing a 1.27 mm nominal center gap) relies entirely on maintaining matching cable lengths (5.0 m or 9.0 m overall system matching). Mismatched total lengths degrade linearity, leading to incorrect rotor dynamics monitoring and compromised cross-talk suppression between adjacent radial probe pairs.

Frequently Asked Questions

Q: Can the 3300/16 monitor be hot-swapped while the 3300 system rack is fully energized?

A: No. Removing or inserting the module while the system rack is powered can cause electrical arcs across the backplane edge connector, risking firmware corruption or triggering false voting trip signals on adjacent protection modules.

Q: How are the 4-20 mA recorder outputs calibrated relative to the monitor's full-scale range?

A: The 4-20 mA outputs are linearly scaled directly across the selected full-scale option (-01 option maps 4 mA to 0 mils peak-to-peak and 20 mA to 10 mils peak-to-peak).

Q: What happens to the monitor status display if a transducer cable experiences a short or open circuit?

A: The monitor drives the affected channel into a NOT OK state, illuminates the channel NOT OK LED, inhibits alarm relay trips to prevent false shutdowns, and drops the corresponding 4-20 mA output below 2 mA.

Field Installation Guidelines

• Verify backplane keying alignment prior to inserting the module into the 3300 rack to avoid pin damage.
• Ensure terminal block field wiring leads for 4-20 mA recorder outputs and proximity transducer inputs use twisted-shielded pair cables.
• Isolate transducer cable shielding to a single ground point at the 3300 rack backplane to prevent ground loops from corrupting dynamic vibration signals.
• Secure all rear terminal connection screws to 0.8 N-m (7 in-lbs) torque to guarantee continuous low-resistance electrical contact under high-vibration conditions.