MeloAuto-Trusted PLC & DCS Parts Supplier
This 8 mm proximity probe provides reliable shaft vibration and position measurements for critical turbomachinery. It operates as a fundamental component of the Bently Nevada 3300 XL transducer system for predictive maintenance. The probe uses eddy current technology to generate a voltage output proportional to the gap between its tip and the conductive target surface. Furthermore, it fully complies with API 670 standards for mechanical configuration, linearity, and thermal stability.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | 330102-03-25-10-02-05 |
| Product Type | 3300 XL 8 mm Proximity Probe |
| Thread Specification | 3/8-24 UNF (Option 03) |
| Unthreaded Length | 25.4 mm / 1.0 in (Option 25) |
| Overall Case Length | 98.6 mm / 3.88 in (Option 10) |
| Total System Length | 9.0 meters / 29.5 feet (Option 02) |
| Connector Type | Miniature coaxial ClickLoc (Option 05) |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Case Material | AISI 303/304 stainless steel |
| Cable Insulation | Fluoroethylene propylene (FEP) |
| Probe DC Resistance | 15.73 Ω ± 0.50 (for 9.0 m length) |
| Linear Range | 2 mm (80 mils) from 0.25 to 2.3 mm gap |
| Recommended Gap | 1.27 mm @ -9 VDC (approx. 50 mils) |
| Sensitivity | 7.87 V/mm (200 mV/mil) ±5% |
| Operating Temperature | -52°C to +177°C (standard) |
| Extended Cable Rating | Up to +260°C |
| Weight | 348 grams |
| Approvals | CSA, ATEX, IECEx (Option 05) |
Design and Installation Features
This probe features a 3/8-24 UNF imperial thread for mounting in standard machine casings. The 25.4 mm unthreaded length provides precise positioning flexibility during installation. Its 98.6 mm overall case length suits applications requiring deeper probe reach into bearing housings. Moreover, the 9.0 meter total cable length allows connection to a Proximitor sensor without requiring intermediate extension cables. This design minimizes potential signal degradation and simplifies overall system wiring.
Performance and Applications
This probe excels at monitoring radial shaft vibration, thrust position, and eccentricity in rotating machinery. It also performs phase reference (Keyphasor) detection for speed and timing measurements. The 3300 XL 8 mm system guarantees complete interchangeability of probes, extension cables, and Proximitor sensors. Consequently, users can replace individual components without recalibration, significantly reducing maintenance time and costs.
Environmental Durability
The probe operates reliably across extreme temperatures from -52°C to +177°C. Its PPS tip and stainless steel case resist harsh industrial chemicals, moisture, and abrasive contaminants. The FEP cable insulation maintains excellent flexibility and signal integrity under demanding conditions. Therefore, this probe suits power generation, oil and gas, pulp and paper, and heavy industrial applications.