The Bently Nevada 3300/16-12-01-02-03-02-00, also cataloged as the 3300/16 XY/Gap Dual Vibration Monitor, operates as a dedicated hardware component for radial vibration and shaft position measurement within the Bently Nevada 3300 Series Machinery Monitoring System. The module processes eddy-current proximity probe signals, scales vibration inputs, and provides alarm, gap, and buffered output functions.
Hardware Specifications
Parameter
Specification
Model
3300/16-12-01-02-03-02-00
Brand
Bently Nevada
Origin
USA
Product Type
XY/Gap Dual Vibration Monitor
System Platform
Bently Nevada 3300 Series Machinery Monitoring System
Measurement Inputs
Two independent radial vibration channels and average shaft position (DC Gap)
Transducer Input
3300 8 mm, 3300 XL 8 mm, or 7200 5 mm and 8 mm Proximitor Sensors
Full Scale Range
0 to 150 um peak-to-peak
Input Impedance
10 kOhm
Signal Accuracy
+/- 0.33% typical, +/- 1% maximum at +25 deg C
Frequency Response
4 Hz to 4,000 Hz standard; 1 Hz to 600 Hz low frequency mode
Alarm Outputs
Hermetically sealed relay outputs
Alarm Adjustment
Digital Alert and Danger setpoints from 0 to 100% full scale
Gap Alarm Delay
Fixed 6 seconds
Recorder Outputs
+4 to +20 mA, 0 to -10 VDC, or +1 to +5 VDC
Buffered Outputs
Front panel coaxial and rear terminal outputs, short-circuit protected
Rack Position
One slot in standard Bently Nevada 3300 rack
Operating Temp
0 deg C to +65 deg C
Power Consumption
Not specified in available documentation
Eddy-Current Probe Scaling and Rotor Dynamics Processing
The 3300/16 monitor receives eddy-current proximity probe signals and converts dynamic shaft movement into calibrated vibration measurements. Therefore, the module maintains compatibility with Bently Nevada proximity transducer systems using standard sensitivity scaling of 200 mV/mil or 7.87 V/mm.
The monitor evaluates XY shaft vibration behavior and average shaft position changes. Additionally, the circuit design supports rotor dynamics analysis by separating radial vibration signals from DC gap measurements. The module allows engineers to identify shaft motion conditions related to unbalance, misalignment, mechanical looseness, and rotor displacement.
The gap measurement channel validates probe operating conditions through DC gap voltage monitoring. In Bently Nevada systems, -10 VDC probe gap targets are commonly used as reference values for correct eddy-current probe positioning and signal linearization.
Frequently Asked Questions
Q: What type of proximity probes can the 3300/16-12-01-02-03-02-00 accept? A: The module accepts Bently Nevada 3300 8 mm, 3300 XL 8 mm, and 7200 series 5 mm and 8 mm proximity probe systems with compatible signal sensitivity.
Q: Does the 3300/16 provide direct vibration recorder outputs? A: Yes. The monitor provides programmable recorder outputs including +4 to +20 mA, 0 to -10 VDC, and +1 to +5 VDC signals proportional to the selected full-scale range.
Q: How does the module handle shaft position measurement? A: The module processes DC gap voltage from eddy-current probes and provides average shaft position monitoring with a fixed 6 second gap alarm delay.
Field Installation Guidelines
Install the module in a compatible Bently Nevada 3300 rack slot and verify rack backplane connections before operation.
Connect proximity probe wiring using shielded signal cables suitable for low-level eddy-current measurement circuits.
Ground cable shields according to plant instrumentation grounding practices to reduce electrical interference.
Verify probe polarity, extension cable compatibility, and Proximitor sensor configuration before commissioning.
Adjust probe gap voltage during installation and confirm the operating point near the specified Bently Nevada gap voltage target.
Separate vibration signal wiring from high-voltage power cables and variable frequency drive output cables.
Confirm relay wiring, alarm setpoints, and recorder output scaling before placing the monitoring channel into service.
