Configured for non-contact shaft displacement sensing within machinery diagnostic platforms, the Bently Nevada 330106-05-30-05-02-CN (330106 Reverse Mount Proximity Probe) provides direct physical/electrical execution. While procurement listings sometimes index this part designation under extension cable classifications due to its integrated coaxial line, the 330106 catalog sequence designates a complete reverse-mount eddy-current probe containing an integrated transducer lead. The component generates a continuous electrical voltage output that scales directly with the mechanical distance between the probe tip face and a rotating conductive target.

Hardware Configuration Matrix

Suffix Nomenclature

• 330106: Base configuration for the 3300 XL 8 mm reverse mount proximity probe built with M10 x 1 metric threads.

• 05: Unthreaded length option representing 0.5 inches of smooth case section.

• 30: Overall case length option representing 3.0 inches of total housing structure.

• 05: Total length option establishing a 0.5 meter (1.6 feet) integrated cable length.

• 02: Miniature coaxial ClickLoc connector design without structural connector insulation sleeves.

• CN: Chinese NEPSI hazardous area certification and regulatory compliance framework approval code.

Dimensional and Electrical Attributes

Eddy-Current Transducer Characteristics

The transducer hardware works through high-frequency eddy-current field generation to map minute position changes. System calibration relies on accurate gap voltage validation, requiring a target setting of -10 VDC to position the operational state precisely at the center of the 80 mil linear window.

The physical construction integrates optimized cross-talk suppression geometries. This optimization allows multi-probe arrays to track complex rotor dynamics across close-range X-Y orthogonal planes without mutual electromagnetic interference or signal degradation.

Bill of Materials

• 1 Bently Nevada 330106-05-30-05-02-CN reverse mount probe assembly.

• 1 Factory-terminated miniature coaxial ClickLoc electrical interface.

• 1 Integral 0.5 meter low-loss RF transmission cable.

Field Installation Framework

• Mechanical Torquing Bounds: Tighten the metric reverse mount body within a range of 7.5 N-m (66 in-lbf) standard to a maximum limit of 22.6 N-m (200 in-lbf).

• Cable Routing Mandates: Isolate the 0.5 meter integrated line inside dedicated grounded conduits to block external induction paths.

• Bend Radius Limits: Observe a strict 25.4 mm (1.0 inch) minimum bend radius constraint across all cable positioning.

Technical Performance FAQ

• What specific mechanical target is required to achieve the nominal 200 mV/mil scale factor?

  The sensor performance is factory-calibrated against a standard AISI 4140 steel target. Alternate shaft materials alter the scale factor and require system recalibration.

• What does the CN suffix alter within the hardware structure?

  The CN suffix does not change the internal sensor circuitry. It indicates compliance testing and official certification for installation under Chinese NEPSI hazardous area conditions.

• Can this 0.5 meter integrated probe cable link directly to a 9 meter Proximitor sensor?

  No, a 0.5 meter probe must be combined with an 4.5 meter extension cable to reach the 5.0 meter system length required by the standard 5 meter Proximitor module.

• How should the miniature ClickLoc coaxial connection be insulated inside a machine housing?

  Use a dedicated connector silicone sleeve or specialized insulation tubing to prevent the exposed coaxial outer shell from grounding against metal machinery parts.

• What behavior occurs if the probe tip comes into direct contact with the spinning shaft?

  Physical contact destroys the PPS plastic tip molding and internal coil assembly, causing the Proximitor loop output voltage to drop to its lower saturation limit.

• What is the purpose of the 0.5 inch unthreaded length option code?

  The unthreaded length allows safe insertion through specific machine port clearances, preventing thread binding inside the entry wall during reverse mount installation.

• Does this probe assembly support standard hot-swapping during active machinery operation?

  Yes, the passive coaxial line can be disconnected or connected while the Proximitor is powered. The monitoring system will register a temporary open-circuit fault.

• What indicates an out-of-tolerance gap installation during commissioning?

  If the static DC voltage measured at the Proximitor output terminal deviates significantly from the -10 VDC center point, the probe position must be mechanically readjusted.