Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330905-07-17-05-02-05 |
| Brand | Bently Nevada |
| Origin | USA |
| Product Type | 3300 NSv Eddy Current Proximity Probe |
| Sensor Type | Non-contact eddy current proximity probe, Narrow Side View design |
| Thread Size | M10 x 1 metric thread |
| Unthreaded Length | 70 mm |
| Overall Case Length | 170 mm |
| Total Cable Length | 0.5 meter |
| Connector Type | Miniature coaxial ClickLoc connector, gold-plated |
| Cable Type | 75 ohm coaxial cable with FEP insulation |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Probe Case Material | AISI 304 stainless steel |
| Average Scale Factor | 7.87 V/mm (200 mV/mil), +/- 12.5% |
| Linear Measuring Range | 0.25 mm to 1.75 mm (10 mils to 70 mils) |
| Recommended Gap Setting | 1.0 mm (40 mils) |
| Frequency Response | 0 Hz to 10 kHz (+0, -3 dB typical) |
| Target Material | AISI 4140 steel standard target |
| Minimum Target Diameter | 8.9 mm; recommended 13 mm or larger |
| Operating Temp | Probe: -34 deg C to +177 deg C; Proximitor Sensor: -51 deg C to +100 deg C |
| Relative Humidity | Up to 100% condensing, non-submerged |
| Dimensions | M10 x 1 threaded probe body with 170 mm case length and 0.5 meter cable |
| Weight | Not specified by manufacturer |
| Power Consumption | Supplied through compatible 3300 XL NSv Proximitor Sensor |
Eddy Current Measurement and Rotor Dynamics Features
The 330905-07-17-05-02-05 uses eddy-current probe scaling technology to convert shaft displacement changes into proportional electrical signals. Therefore, the connected Proximitor Sensor can process dynamic vibration and static axial position measurements with consistent calibration characteristics.
The probe supports rotor dynamics analysis by measuring radial vibration and axial movement without mechanical contact. In addition, the Narrow Side View construction allows installation near small shafts and restricted mounting locations where standard probe geometries cannot be installed.
The 3300 NSv system maintains gap voltage validation through the standard proximity measurement circuit. The typical operating target includes a -10 VDC gap voltage reference for correct probe positioning and signal evaluation.
Frequently Asked Questions
Q: What type of measurement does the 330905-07-17-05-02-05 perform?
A: The probe measures non-contact shaft displacement using an eddy-current sensing principle. It detects dynamic vibration and static position changes through electromagnetic field variation.
Q: Can the 330905-07-17-05-02-05 connect directly to a monitoring system input?
A: No. The probe requires a compatible Bently Nevada 3300 XL NSv Proximitor Sensor to provide signal conditioning and output conversion.
Q: What installation factors affect measurement accuracy?
A: Probe gap adjustment, target material characteristics, cable routing, and proper shielding practices affect signal stability and measurement accuracy.
Field Installation Guidelines
- Install the probe with the M10 x 1 threaded mounting interface according to the mechanical drawing and equipment requirements.
- Set the probe gap within the specified linear measuring range before commissioning the monitoring channel.
- Maintain proper cable routing practices. Keep the coaxial cable separated from high-current power conductors and strong electromagnetic interference sources.
- Connect the miniature ClickLoc connector securely to prevent loosening caused by machinery vibration.
- Verify the gap voltage and output signal after installation. Confirm that the probe operates within the expected proximity measurement range before placing the monitoring channel into service.
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