The Bently Nevada 330901-00-08-10-02-00, also cataloged as the 3300 XL NSv Proximity Probe, operates as a dedicated hardware component for non-contact static position and dynamic vibration measurement within fluid-film bearing machinery monitoring systems. The transducer converts mechanical clearance changes into high-frequency eddy-current impedance shifts, delivering linear voltage signals proportional to shaft displacement.
| Option Code | Parameter Designation | Configured Specification |
|---|---|---|
| 00 | Unthreaded Length Option | 0.0 in |
| 08 | Overall Case Length Option | 0.8 in |
| 10 | Total Length Option | 1.0 meter (39 in) |
| 02 | Connector and Cable Type Option | Miniature coaxial ClickLoc connector, standard cable |
| 00 | Agency Approval Option | Not required |
| Parameter | Specification |
|---|---|
| Model | 330901-00-08-10-02-00 |
| Brand | Bently Nevada |
| Origin | United States |
| Weight | Standard probe assembly weight (typically 0.2 kg class) |
| Dimensions | 1/4-28 UNF thread case, 0.8 in case length, 1.0 meter total cable length |
| Operating Temp | Standard industrial probe operating range (-51 deg C to +177 deg C typical) |
| Power Consumption | Passive transducer element (powered via Proximitor sensor) |
| Scale Factor | Average scale factor of 7.87 V/mm (200 mV/mil) |
| Connector Type | Miniature coaxial ClickLoc connector |
The 3300 XL NSv probe system relies on precise eddy-current probe scaling to maintain its specified 7.87 V/mm (200 mV/mil) average scale factor across small target installation areas. Gap voltage validation during bench setup requires establishing a -10 VDC baseline bias at the Proximitor sensor output under zero dynamic displacement. This voltage calibration prevents signal saturation during extreme rotor dynamics movements, maintaining linear dynamic vibration response and high cross-talk suppression between closely spaced proximity probes.
Q: What is the significance of setting a -10 VDC gap voltage during installation?
A: Setting a nominal -10 VDC gap voltage places the probe tip at the midpoint of its linear physical measurement range against an AISI 4140 target.
Q: Can the 1.0 meter integral coaxial cable be cut or spliced during field wiring?
A: No. Altering the physical cable length changes total system capacitance, causing significant deviation from the factory scale factor calibration.
Thread the probe body into the 1/4-28 UNF mounting port and torque to standard installation limits. Ensure a minimum of 5 full threads of engagement. Maintain sufficient radial tip clearance from surrounding metallic obstructions to prevent side-wall phantom loading. Route the standard coaxial cable through protective metal conduit, securing all ClickLoc connector joins with connector protectors and grounding the outer shielding exclusively at the driver interface cabinet to avoid earth ground loops.
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