Configured for radial vibration and axial position measurement in machine protection systems, the Bently Nevada 330101-00-20-0-5-02-05 (330101-00-20-0-5-02-05 Proximity Transducer) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

• 330101: 3300 XL NSv Series Transducer.
• 00-20-0-5-02-05: Specific configuration code denoting thread pitch, case length, termination type, and agency approval status.

Hardware Specifications

Mechanical Monitoring and Eddy-Current Scaling

The 3300 XL NSv system utilizes specialized eddy-current probe scaling to accommodate the 5 mm tip diameter, optimized for tight target surface areas. Maintaining accurate rotor dynamics analysis requires precise gap voltage validation, with typical operational targets set at -10 VDC. The transducer design incorporates internal shielding for cross-talk suppression, ensuring signal integrity in environments where high-density probe arrays are required. Deviations in gap voltage indicate potential mechanical runout or sensor positioning error, which must be corrected to maintain the linear measurement range of 1.0 mm.

Ordering info

• 1 x 330101-00-20-0-5-02-05 Proximity Transducer
• 1 x Installation hardware kit

Field Installation Guidelines

• Mechanical Positioning
  • Ensure the probe tip is perpendicular to the shaft target to maintain linear response.
  • Secure the probe using the included locknuts once the operational gap is established.
• Cabling and Shielding
  • Route the integral coaxial cable through non-metallic conduits where possible to reduce EMI coupling.
  • Avoid sharp bends that could compromise the coaxial geometry and signal impedance.
• System Calibration
  • Verify the system output against a known target material, typically AISI 4140 steel, to ensure the 7.87 V/mm scale factor is maintained.

Frequently Asked Questions

• Why is the linear range shorter than standard 8 mm probes?

  The NSv (Narrow Side View) probe is optimized for smaller targets, which inherently limits the effective linear sensing range to 1.0 mm compared to 2.0 mm for standard probes.

• Can this probe be used for high-frequency measurements?

  Yes, the system is designed to provide high-frequency response sufficient for identifying vibration harmonics and rotor dynamics.

• What happens if the probe tip touches the target?

  Physical contact can cause mechanical abrasion to the polyphenylene sulfide (PPS) tip, potentially resulting in signal degradation or electrical shorting.

• How should the shield be terminated?

  The shield should be connected to the system common at the Proximitor end to avoid ground loops and noise injection.

• Is this probe compatible with standard 3300 XL proximitors?

  No. The NSv probe requires a dedicated 3300 XL NSv Proximitor to ensure correct impedance matching and system scaling.

• How do I identify if the probe is damaged?

  A sudden loss of signal or inability to reach the nominal gap voltage target often indicates a broken internal conductor or compromised insulation.

• Does the probe require an external power supply?

  No. The probe is a passive device; power is supplied through the coaxial connection from the Proximitor sensor unit.

• Can I use a different target material?

  Different alloys have varying magnetic permeability, which will alter the sensitivity and linear range; recalibration against the new material is mandatory.