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The Bently Nevada 330105-02-12-05-02-05, also cataloged as the 330105 Proximity Transducer System, operates as a dedicated hardware component for high-precision vibration monitoring within Bently Nevada 3300 XL machine monitoring platforms.

Suffix Breakdown & Model Matrix

  • 330105: 3300 XL 8 mm Reverse Mount Probe (M10 x 1 thread)

  • -02: Unthreaded Length Option (2.0 in)

  • -12: Overall Case Length Option (1.2 in)

  • -05: Total Length Option (0.5 meter / 1.6 feet)

  • -02: Miniature ClickLoc coaxial connector

  • -05: Multiple Agency Approvals

Hardware Specifications

Parameter Specification
Model 330105-02-12-05-02-05
Brand Bently Nevada
Origin USA
Weight 0.23 kg
Dimensions 20.4 cm x 22.2 cm x 3.7 cm
Operating Temp -51 deg C to +177 deg C
Power Consumption Passive sensor (driven by 3300 XL Proximitor Sensor)
Probe Diameter 8 mm
Connector Type Gold-plated ClickLoc coaxial connector
Total Length 0.5 meter (1.6 feet)
System Compatibility 3300 XL 8mm Proximity Transducer System

Mechanical Monitoring & TSI Technical Attributes

The 330105 reverse mount probe requires precise eddy-current probe scaling to ensure linear voltage output across the standard 80 mil (2.0 mm) sweep range. During commissioning, gap voltage validation must target a nominal -10 VDC baseline, corresponding to the center of the calibrated linear range when referenced against a 4140 steel target. The gold-plated ClickLoc coaxial connector incorporates an internal locking mechanism engineered for cross-talk suppression and continuous shielding termination. This design isolates high-frequency rotor dynamics from structural electromagnetic interference, ensuring signal integrity across the 0.5 meter physical lead length prior to Proximitor input interface.

Frequently Asked Questions

  • Q: What is the critical torque specification for installing the reverse mount probe housing?

    • A: The M10 x 1 threaded probe body must be torqued to a maximum of 33.9 N-m (300 in-lb) within the housing assembly to prevent mechanical deformation of the internal eddy-current coil structure.

  • Q: Can this 0.5 meter probe be connected directly to a standard 3500/22M monitor interface?

    • A: No. The probe requires a matching 3300 XL extension cable to achieve a total system electrical length of either 5.0 meters or 9.0 meters, which matches the precise tuning calibration of the corresponding 3300 XL Proximitor Sensor.

  • Q: How does the ClickLoc connector handle fluid or chemical exposure in the field?

    • A: The gold-plated ClickLoc connector provides mechanical connection reliability, but fluid immersion requires application of oil-proof fluorosilicone self-fusing tape or explicit connector protector sleeves to block ambient moisture and oil ingress.

Field Installation Guidelines

  1. Ensure the machine is in a non-operational state. Verify the target area on the rotor surface is free from deep mechanical scores, magnetic runout, or chrome plating variations exceeding 0.25 micrometers.

  2. Thread the reverse mount probe body into the sleeve housing. Adjust the physical gap while reading the gap voltage from the Proximitor sensor output using a calibrated digital multimeter.

  3. Target a physical voltage of -10.0 VDC (+/- 0.5 VDC) at the designated machine rest state to position the transducer in the center of its linear range.

  4. Secure the locknut to prevent drift caused by operational machine vibration. Route the 0.5 meter integral cable through rigid or flexible conduit, ensuring minimum bend radius rules of 25.4 mm (1.0 in) are maintained.

  5. Connect the ClickLoc interface to the extension cable. Ensure the terminal connection clicks fully into place, and insulate the junction from structural metal components using non-conductive sleeving.

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