Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | Bently Nevada 330905-00-12-10-02-00 |
| Base Model | 330905 3300 NSv Proximity Probe |
| Brand | Bently Nevada |
| Product Type | Proximity Sensor |
| Measurement Principle | Eddy current non-contact displacement sensing |
| System Application | 3300 NSv transducer system |
| Origin | USA |
| Dimensions | 120 mm overall case length, 5 mm nominal probe tip diameter |
| Thread Type | M10 x 1.0 metric fine thread |
| Unthreaded Length | 0 mm |
| Cable Length | 1.0 meter |
| Cable Type | Standard coaxial cable |
| Connector Type | Miniature coaxial ClickLoc connector |
| Tip Material | Polyphenylene sulfide (PPS) |
| Probe Body Material | 303 stainless steel |
| Measurement Range | 1.5 mm (60 mils) |
| System Sensitivity | 7.87 V/mm (200 mV/mil) +/-5% |
| Linearity Deviation | Less than +/-0.025 mm (+/-1 mil) |
| Frequency Response | 0 Hz (DC) to 10 kHz (-3 dB point) |
| Target Material | AISI 4140 steel standard calibration |
| Operating Temp | -51 deg C to +177 deg C |
| Humidity Rating | 100% condensing, non-submerged |
| Ingress Protection | IP67 when correctly mated |
| Power Consumption | Supplied by compatible Proximitor sensor system, not specified |
Eddy Current Probe Scaling and Rotor Dynamics Signal Performance
The Bently Nevada 330905-00-12-10-02-00 applies eddy-current probe scaling to convert shaft displacement into proportional electrical output signals. The probe provides a 7.87 V/mm (200 mV/mil) sensitivity value for compatibility with Bently Nevada proximity monitoring systems.
Furthermore, the 3300 NSv design supports rotor dynamics analysis by measuring both shaft radial movement and static position changes. The narrow side-view probe construction allows installation in restricted mechanical clearances where standard 3300 XL probes may not fit.
The probe system requires proper gap voltage validation during commissioning. Technicians typically verify probe operating position using the Proximitor system output, including the standard -10 VDC gap voltage target used for Bently Nevada eddy-current measurement systems.
Frequently Asked Questions
Q: What measurement signals does the Bently Nevada 330905-00-12-10-02-00 provide?
A: The probe measures shaft displacement using eddy-current sensing and provides signals for both static position monitoring and dynamic vibration analysis.
Q: What installation thread does the 330905-00-12-10-02-00 use?
A: The probe uses an M10 x 1.0 metric fine thread with a fully threaded 120 mm case length configuration.
Q: Can the probe operate with targets other than AISI 4140 steel?
A: Yes. The standard calibration uses AISI 4140 steel, while other target materials require corresponding calibration data.
Field Installation Guidelines
Install the probe with correct mechanical clearance between the probe tip and the monitored shaft surface. Verify that the M10 x 1.0 mounting thread provides stable mechanical positioning before final tightening.
Route the coaxial cable away from high-current conductors and strong electromagnetic interference sources. Maintain proper cable support to prevent mechanical stress on the miniature coaxial ClickLoc connector.
During commissioning, confirm the probe gap voltage through the connected Proximitor system. Adjust the probe position until the operating gap meets the required monitoring range, with typical Bently Nevada systems using -10 VDC as the nominal gap reference.
Connect the probe shielding and grounding according to the monitoring system installation manual. Avoid improper shield termination methods that may introduce electrical noise into vibration measurement signals.
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