The Bently Nevada 330105-02-12-05-12-05 is an 8 mm reverse mount proximity probe from the 3300 XL series. It delivers precise, non-contact measurement of shaft position and vibration in rotating machinery. This probe integrates seamlessly with Bently Nevada’s 3300 Proximity Transducer System and complies with API 670 (4th Edition) requirements for accuracy, linearity, and thermal stability.
Unlike standard front-mount probes, the reverse mount design allows installation from the rear of a mounting bracket or pedestal. This configuration simplifies routing in confined spaces and improves mechanical stability. The probe generates a DC voltage output proportional to the gap between its tip and a conductive target surface—typically a turbine or compressor shaft.
Engineers commonly deploy this sensor in fluid-film bearing applications, where accurate radial position and dynamic motion data are essential. It also supports Keyphasor® reference marking and rotational speed monitoring. Thanks to standardized calibration across the 3300 XL platform, users can mix and match probes, extension cables, and Proximitor® sensors without recalibration.
The unit features a miniature ClickLoc™ coaxial connector and is available with armored or unarmored cable options. It carries global hazardous area certifications, including CSA, ATEX, and IECEx, ensuring safe operation in explosive environments.
Key Technical Specifications
| Parameter | Value |
|---|
| Model Number | 330105-02-12-05-12-05 |
| Product Type | 3300 XL 8 mm Reverse Mount Proximity Probe |
| Manufacturer | Bently Nevada (a Baker Hughes Company) |
| Sensing Range | 2.0 mm (80 mils) linear range |
| Output | -2 VDC to -18 VDC (typical), proportional to gap |
| Target Material | Ferrous steel (4140 or equivalent) |
| Frequency Response | DC to ≥10 kHz |
| Cable Length | 5 ft (1.5 m) integral cable + 5 ft (1.5 m) extension (as per suffix code) |
| Connector Type | Miniature ClickLoc™ coaxial |
| Housing Material | Stainless steel probe body |
| Environmental Rating | IP67 (when properly installed) |
| Certifications | CSA, ATEX, IECEx (for applicable variants) |
| Compatibility | Fully interchangeable within 3300 XL 8 mm system; backward compatible with legacy 3300 8 mm components |
| Weight | 0.04 kg |
| Dimensions | 58.5 mm length × 15 mm diameter (probe body) |
| Origin | USA |
| Status | Active (not discontinued) |
| MOQ | 1 unit |
| HS Code | 8537101190 |
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