The Bently Nevada 330106-XX-XX-10-02-00, also cataloged as the 330106 Reverse Mount Proximity Probe, operates as a dedicated hardware component for non-contact shaft vibration and position displacement measurements within 3300 XL Proximity Transducer System platforms. The probe executes physical-to-electrical signal transduction via eddy-current proximity sensing principles. It outputs a continuous voltage proportional to the dynamic or static gap distance between the unshielded tip and a target conductive surface.

Configuration Matrix & Option Codes

• 330106: Base model for 3300 XL 8 mm reverse mount proximity probe featuring M10 x 1 metric mounting threads.

• First XX: Unthreaded length configuration option, determined by specific machine housing geometry.

• Second XX: Overall case length option, matched to structural mounting requirements.

• 10: 1.0 meter (3.3 feet) total cable length option.

• 02: Miniature coaxial ClickLoc connector configuration without connector protector.

• 00: Agency approval option indicating no hazardous area certifications required.

Hardware Specifications

Eddy-Current Transducer Characteristics

The probe utilizes high-frequency eddy-current field interaction to achieve sub-micron displacement resolution without mechanical contact. Calibration verification relies on precise gap voltage validation, targeting a nominal -10 VDC offset value corresponding to the center of the calibrated 80 mil linear range.

The structural design incorporates cross-talk suppression geometry to prevent electromagnetic interference when multiple 3300 XL 8 mm probes are installed in close physical proximity for orthogonal X-Y radial vibration monitoring or redundant thrust position tracking. This maintains signal integrity during high-velocity rotor dynamics transitions.

Packaging & Ordering Details

• 1 x Bently Nevada 330106-XX-XX-10-02-00 Reverse Mount Proximity Probe assembly.

• 1 x Factory-installed miniature coaxial ClickLoc connector interface.

• 1 x Integral low-loss coaxial cable structure matching the 1.0 meter specification.

Installation & Wiring Framework

• Mechanical Torquing Limits: Do not exceed a maximum installation torque of 22.6 N-m (200 in-lbf) during reverse-mount installation. The recommended standard tightening torque is 7.5 N-m (66 in-lbf).

• Conduit and Isolation Rules: Route the integral probe cable through dedicated, grounded metal conduit. Ensure full isolation from power distribution lines and variable frequency drive output cables to block electromagnetic noise induction.

• Minimum Bend Radius Constraints: Maintain a strict minimum bend radius of 25.4 mm (1.0 inch) across all sections of the coaxial cable during final physical installation.

Technical Performance FAQ

• What is the specific target gap voltage for system calibration?

  The target orientation gap voltage is -10 VDC, which corresponds to the geometric center of the linear calibration span when evaluating standard AISI 4140 steel shafts.

• Can this proximity probe be hot-swapped while the Proximitor is energized?

  Yes, the passive coaxial connection allows hot-swapping. Disconnecting the coaxial line will drive the Proximitor output to its upper limit but will cause no damage to the electronics.

• What is the maximum rated pressure sealing capability of the probe tip?

  The probe tip is sealed with a Viton O-ring to withstand differential machine case pressures, but it is not factory tested or certified for high-pressure process boundary isolation.

• How does the connector option affect extension cable compatibility?

  The miniature coaxial ClickLoc connector interfaces directly with any standard 3300 XL extension cable, ensuring complete electrical and mechanical cross-compatibility without individual matching.

• What occurs if the mechanical installation torque exceeds 22.6 N-m?

  Exceeding the maximum torque specification risks mechanical distortion of the stainless steel probe body, which can damage the internal coaxial solder joints and compromise the sensor.

• How does temperature variation alter the system output sensitivity?

  The 3300 XL system exhibits a low thermal drift profile, remaining fully compliant with API 670 standards for scale factor stability across the entire -51 to +177 deg C operating range.

• Is an external power supply connected directly to this probe?

  No, the probe receives a high-frequency radio frequency drive signal directly from the associated Proximitor module. It does not connect to external DC or AC power rails.

• Why does this model exclude an external armor layer?

  The 330106 reverse mount model relies on internal sleeve mounting or external conduit structures for mechanical isolation, eliminating the need for bulky integrated flexible armor layers.