Description
Bently Nevada 3300/16-14-01-01-00-00-00 XY/Gap Dual Vibration Monitor
Configured for continuous measurement of dual radial vibration and average shaft gap validation in rotor dynamics monitoring systems, the BentlyNevada 3300/16-14-01-01-00-00-00 (3300/16 XY/Gap Dual Vibration Monitor) provides direct physical/electrical execution.
Hardware Specifications
| Parameter |
Specification |
| ModelBrand |
Bently Nevada 3300/16-14-01-01-00-00-00 |
| Origin |
USA |
| Weight |
1.0 kg |
| Dimensions |
2.3 in x 8.0 in x 1.0 in |
| OperatingTemp |
0 degC to +65 degC |
| PowerConsumption |
2 W |
| Input Type |
1 or 2 proximity probe channels |
| Supported Probes |
3300 8 mm, 3300 XL 8 mm, 7200 5 mm / 8 mm Proximitor systems |
| Full Scale Range |
0 to 400 um p-p |
| Frequency Response |
4 to 4000 Hz (standard), 1 to 600 Hz (low speed mode) |
| Analog Outputs |
4-20 mA, 0 to -10 VDC, 1 to 5 VDC |
| Relay Type |
Epoxy-sealed alarm relays |
| Accuracy |
+/-0.33% typical, +/-1% max |
Eddy Current Probe Scaling and Gap Voltage Validation Logic
The module implements dual-channel eddy-current signal conditioning with independent scaling for X-Y radial vibration vectors and DC gap tracking. Probe sensitivity linearization is applied to 200 mV/mil class or equivalent 8 V/mm transducer families, maintaining proportional conversion stability across full-scale displacement.
Gap voltage validation is referenced against nominal -10 VDC operating envelopes to detect shaft centerline drift and static position deviation. Cross-channel coupling is minimized through internal isolation stages, reducing XY vector contamination under high vibration phase shift conditions. Rotor dynamic reconstruction is derived from phase-coherent sampling of orthogonal probe inputs.
Cross-talk suppression is implemented at the analog front-end to preserve orbit integrity during high amplitude synchronous vibration events.
Frequently Asked Questions
Q: Can the module operate with mixed probe types across two channels?
A: Yes. Each channel supports independent configuration for 3300 8 mm and 7200 series probes, provided calibration scaling is matched to sensitivity class.
Q: What is the effect of low-speed mode on signal processing?
A: Low-speed mode reduces high-frequency cutoff to 600 Hz, optimizing resolution for shaft speeds below 1000 rpm by increasing effective measurement stability.
Q: Are buffered outputs isolated from alarm relay logic?
A: Buffered transducer outputs are electrically independent from relay logic but share common signal conditioning front-end references.
Field Installation Guidelines
Shield termination shall be performed at a single instrument earth point to avoid ground loop formation in eddy-current measurement circuits. Probe extension cables must maintain continuous coaxial shielding integrity without intermediate splices.
Maintain separation between signal cabling and power conductors to reduce electromagnetic coupling into high-impedance proximity inputs. Ensure correct probe tip alignment orthogonal to shaft surface to preserve linear gap-voltage response characteristics.
Relay output wiring shall follow dry-contact isolation practices with external suppression applied for inductive loads.
