Engineered to capture radial vibration and axial position telemetry within critical rotating assemblies, the Bently Nevada 330101-00-39-20-02-05 (330101) proximity probe delivers high-fidelity physical gap measurement.

Transducer Order Breakdown & Configuration Suffixes

• 330101: 3300 XL 8 mm Proximity Probe featuring an external threaded body design
• 00: Unthreaded case length designation (0.0 in baseline specification)
• 39: Total electrical length configuration code tailored for specific system impedance matching
• 20: Miniature coaxial ClickLock connector style paired with robust molded boots
• 02: Multi-agency hazardous area safety approval and certification rating
• 05: Regional calibration option code and country-specific conformance identifier

Physical & Electrical Performance Specifications

Transduction Principles & Gap Voltage Tuning

The eddy-current sensing architecture relies on high-frequency radio frequency modulation to determine the physical distance separating the probe tip from the rotating shaft surface. Reliable machinery protection requires verifying the static gap voltage, targeting an operational baseline of -10 VDC during normal centerline rotation. Cross-talk interference is suppressed by enforcing mandatory spatial clearance intervals between neighboring probe tips in dual-axis monitoring arrangements.

Standard Shipment Contents

• 1 x Bently Nevada 330101-00-39-20-02-05 3300 XL Proximity Probe
• 1 x Coaxial ClickLock Connector Protective Dust Cover
• 1 x Standard Brass Mounting Nut fitted with locking threads
• 1 x High-Temperature Environmental Insulation Sleeve

Mechanical Installation Procedures

• Threaded Housing Insertion
  • Ensure machine mounting ports and internal threads are clean, dry, and free of foreign debris prior to probe placement.
  • Apply controlled torque levels using calibrated wrenches to secure the probe body without causing mechanical case deformation.
• Cabling and Shield Earthing
  • Route the integral coaxial lead safely away from high-voltage AC power pathways, motor lines, and variable frequency drive outputs.
  • Anchor the signal shield exclusively to the dedicated earth ground terminal at the monitor rack to eliminate loop interference.

Technical FAQ Section

• Q: What scale factor does this specific part number configuration produce?
• A: The nominal scale factor is 7.87 V/mm (200 mV/mil) when paired with a compatible Proximitor sensor.
• Q: What is the maximum continuous temperature endurance for the probe tip?
• A: The probe tip and integral coaxial cable tolerate continuous operating environments up to +177 deg C.
• Q: What gap voltage level should technicians target during initial setup?
• A: Initial mechanical gap voltage must be tuned to approximately -10 VDC to center the operating range.
• Q: Are specialized tightening tools required for the ClickLock connectors?
• A: No, these connectors are designed for secure hand tightening while providing positive feedback against heavy vibration.
• Q: What thread standard is machined onto the exterior of the probe body?
• A: The unit utilizes standard 3/8-24 UNF threading built for insertion into industrial bearing housing ports.
• Q: How does total cable length impact system signal behavior?
• A: Total electrical length dictates specific Proximitor calibration parameters to preserve signal capacitance and linearity.
• Q: What power supply energizes the internal transducer measurement loop?
• A: A regulated -24 VDC power source integrated within the monitor rack chassis powers the measurement circuit.
• Q: Why is single-point shielding termination strictly enforced?
• A: Single-point grounding suppresses high-frequency electromagnetic noise and prevents ground loop signal distortion.