Description
Bently Nevada 3300/16-12-01-01-00-00 Dual Vibration Monitor Module
Configured for radial vibration and gap signal conditioning in 3300 Machinery Monitoring System,the Bently Nevada 3300/16-12-01-01-00-00 (3300/16 Dual Vibration Monitor Module) provides direct physical/electrical execution. The module processes dual proximity probe inputs for vibration amplitude and average shaft position (gap), converting eddy-current transducer signals into conditioned analog outputs and relay trip logic.
Suffix Breakdown & Model Matrix
| Code Segment |
Function |
Configuration |
| 3300/16 |
Base Module |
XY / Gap Dual Vibration Monitor |
| -12 |
Full Scale Range |
0 to 150 um pp |
| -01 |
Input Type |
3300 / 7200 / 3300XL Proximitor compatible |
| -01 |
Relay Type |
Epoxy sealed SPDT relays |
| -00 |
Agency Approval |
None |
| -00 |
Safety Barriers |
Not installed |
| -00 |
Trip Multiply |
Not enabled |
HardwareSpecifications
| Parameter |
Specification |
| ModelBrand |
Bently Nevada 3300/16-12-01-01-00-00 |
| OperatingTemp |
0 degC to +65 degC |
| PowerConsumption |
2 W nominal |
| Input Channels |
1 or 2 proximity probe inputs |
| Input Impedance |
10 kOhm |
| Frequency Response |
4 Hz to 4000 Hz (standard), 1 Hz to 600 Hz (low speed option) |
| Recorder Outputs |
4 to 20 mA, 0 to -10 VDC, 1 to 5 VDC selectable |
| Relay Output |
SPDT epoxy sealed |
| Buffered Output |
Front panel coaxial per channel |
Eddy Current Probe Scaling and Gap Voltage Validation
The module interfaces with eddy-current proximity transducers using calibrated scaling typically based on 200 mV/mil sensitivity (approx 7.87 V/mm). Input conditioning circuitry performs continuous gap voltage validation against expected shaft position windows, ensuring stable DC offset tracking across thermal drift conditions.
Cross-talk suppression is implemented at the channel separation stage, where dual-channel processing isolates orthogonal vibration vectors (X and Y axes). This prevents phase coupling errors in rotor dynamic interpretation, particularly in closely mounted probe geometries.
Rotor dynamic response is derived from band-limited vibration extraction, with selectable frequency windows optimized for low-speed shaft behavior below 1000 RPM and high-speed turbomachinery profiles up to 4000 Hz.
Frequently Asked Questions
Q: Can the module operate with a single proximity probe input only?
A: Yes. The second channel can remain unused, but channel diagnostics will flag inactive input unless bypassed via configuration.
Q: Does hot-swapping the module affect backplane signal integrity?
A: The 3300 rack architecture does not support live hot-swap without transient interruption on shared backplane lines.
Q: What determines relay trip activation timing?
A: Relay actuation is governed by internal comparison logic between filtered vibration signal and configured alert/danger thresholds with fixed processing latency.
Field Installation Guidelines
Install the module only in a compatible 3300 rack slot with verified backplane alignment. Maintain shield continuity for all proximity probe cabling and ensure single-point grounding at the system chassis.
Avoid routing low-level probe signals alongside high-energy switching conductors to minimize induced noise. Torque all terminal connections to manufacturer-recommended mechanical retention limits.
Verify channel scaling calibration prior to commissioning using known gap reference voltages. Ensure airflow clearance within enclosure remains unobstructed for thermal stability under continuous 2 W dissipation.
