The Bently Nevada 330101-00-43-20-02-05, recognized in documentation as the 330101-00-43-20-02-05 Proximity Transducer, executes non-contacting displacement and vibration measurements on industrial turbomachinery shafts.

Configuration Matrix & Suffix Analysis

• Base Order Identifier: 330101 (Designates standard 8 mm probe body geometry with 3/8-24 UNF external threads and unarmored coaxial cable)
• Unthreaded Body Length: 00 (Indicates zero unthreaded length ahead of the main mounting thread envelope)
• Total Case Length Parameter: 43 (Specifies a total case length dimension of 4.3 inches)
• System Interconnect Length: 20 (Provides an integrated 2.0 meter total electrical path length)
• Termination Style Indicator: 02 (Equipped with miniature coaxial ClickLoc connector hardware)
• Regional Certification Code: 05 (Applies standard factory calibration and approval profiles)

Operational Characteristics Table

Signal Conditioning & Gap Voltage Verification

Operation relies on high-frequency radio frequency modulation driven by a matched Proximitor driver. The generated electromagnetic field induces eddy currents within the target shaft material, yielding a precise voltage output proportional to physical clearance. Field technicians must adjust mechanical positioning until the static output voltage reaches the nominal -10 VDC baseline at mid-stroke. Proper grounding of the coaxial shield ensures that multi-channel monitoring assemblies remain free of inter-channel signal coupling and high-frequency noise injection.

Package Contents & Included Hardware

• 1 x 3300 XL 8 mm Sensor Tip with 2.0 m Cable
• 1 x 3/8-24 UNF Hexagonal Steel Mounting Nut
• 1 x Protective Insulating Terminal Cap

Mechanical Installation Procedures

• Thread Alignment: Ensure proper axis perpendicularity between the mounting bore and the rotating shaft surface to prevent distortion of the linear operating range.
• Air Gap Clearance: Maintain a minimum radial boundary distance of 10 mm from surrounding structural metals to inhibit parasitic field loading.
• Torque Application: Apply calibrated tightening force to the mounting threads to prevent housing elongation or thread stripping under thermal expansion.
• Shield Termination: Isolate the outer signal shield from machine earth ground at the probe end to avoid ground loop current creation.

Technical Inquiry & Operational FAQ

• What is the nominal output sensitivity of this specific transducer variant?

  The output scale factor is factory-calibrated to 7.87 mV/um across the linear working range.

• Can this unit operate without matching extension cables?

  The 2.0 meter integrated cable length is designed to connect directly to the monitor input or designated barrier without intermediate extension lines.

• What constitutes an acceptable shaft target material for accurate measurement?

  Standard calibration curves assume an AISI 4140 alloy steel target; alternate ferrous or non-ferrous materials require specific scaling factors.

• How does thermal fluctuation affect transducer performance?

  The internal components are thermally compensated to maintain stability across extreme operating ranges from -51 deg C to +177 deg C.

• What causes abrupt signal saturation during machinery startup?

  Excessive radial shaft displacement exceeding the 2.0 mm linear range or a shifted static gap voltage outside the nominal -10 VDC target.

• Is field recalibration necessary when replacing a damaged probe tip?

  No, the interchangeability design of the 3300 XL series eliminates the need for individual component bench calibration.

• What tool should be used to tighten the ClickLoc coaxial connector?

  Finger-tightening combined with a specialized torque wrench ensures proper seating without crushing the internal dielectric pin.

• How should excess cable length be managed inside junction enclosures?

  Coil the excess cable loosely with a large bend radius, avoiding sharp kinks that can fracture the inner conductor.