The Bently Nevada 330903-00-21-10-02-05, also cataloged as the 330903 Proximity Sensors, operates as a dedicated hardware component for non-contact shaft vibration and displacement measurement within 3300 XL NSv Machinery Monitoring System platforms. The probe assembly features an M8 x 1 thread profile, 0 mm unthreaded length, 210 mm overall case length, and a 1.0 m overall cable length with flexible armor terminated by a miniature coaxial ClickLoc connector.
| Option Code | Parameter Designation | Selected Configuration |
|---|---|---|
| 330903 | Base Model | 3300 NSv Probe, M8 x 1 thread |
| -00 | Unthreaded Length | 0 mm |
| -21 | Overall Case Length | 210 mm (2.1 decimeters format style) |
| -10 | Total Cable Length | 1.0 m (3.3 ft) |
| -02 | Connector & Cable Type | Miniature coaxial ClickLoc connector, standard cable |
| -05 | Agency Approvals | Multiple approvals / hazardous area certifications |
| Parameter | Specification |
|---|---|
| Model | 330903-00-21-10-02-05 |
| Brand | Bently Nevada |
| Origin | United States |
| Weight | 2.0 kg |
| Dimensions | M8 x 1 metric thread profile (210 mm case length) |
| Operating Temp | 0 deg C to +45 deg C (+32 deg F to +113 deg F) |
| Power Consumption | Passive transducer (Powered via Proximitor Sensor) |
| Thread Specification | M8 x 1 metric thread |
| Cable Armor | Equipped with flexible armor protection |
| Unthreaded Length | 0 mm |
| Overall Case Length | 210 mm |
| Total Cable Length | 1.0 m (3.3 ft) |
| Connector Type | Miniature coaxial ClickLoc connector |
| Agency Approvals | Multiple hazardous area approvals (Option 05) |
The 330903-00-21-10-02-05 probe executes precision rotor dynamics monitoring on small-diameter shafts or constrained internal bearing housings where spatial limits prohibit standard 5 mm or 8 mm transducers. Operating on the high-frequency eddy-current principle, the probe scaled voltage output directly tracks high-speed shaft oscillation and radial positioning. During initial mechanical setup, gap voltage validation targeted at -10 VDC places the probe tip at the midpoint of its linear range, ensuring predictable frequency response, dynamic tracking, and effective cross-talk suppression between adjacent measurement points.
Q: What is the recommended target gap setting during physical installation of the probe?
A: Adjust the mechanical mounting depth until the connected Proximitor Sensor outputs -10 VDC, corresponding to the center of the calibrated linear sensing gap.
Q: Can the 1.0 m probe cable be wired directly to the monitoring system cabinet terminal block?
A: No. The integrated 1.0 m probe cable must connect to a matching 3300 XL NSv extension cable to establish the complete 5.0 m or 7.0 m system length required for correct Proximitor calibration.
Q: What is the primary function of the armored option on the probe cable?
A: The flexible armor sleeve provides physical abrasion resistance and mechanical protection against crushing or cutting in harsh machinery cabinet environments.
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