Configured for radial vibration and axial position measurement in machine protection systems, the Bently Nevada 330908-00-28-10-01-CN (330908-00-28-10-01-CN Proximity Probe) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

• 00: Minimum unthreaded length 0.0 in.
• 28: Total case length 2.8 in.
• 10: Total length 1.0 meter (39 in).
• 01: Miniature coaxial ClickLoc connector with connector protector.
• CN: Country-specific documentation/agency configuration.

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

The 330908-00-28-10-01-CN utilizes NSv technology to maintain signal linearity when monitoring targets with small surface areas. Precise eddy-current probe scaling is required to maintain the specified system output sensitivity. To ensure valid rotor dynamics analysis, the proximity probe gap must be verified during commissioning, typically targeting a -9 VDC to -10 VDC reading at the Proximitor sensor output. The integrated shielding provides cross-talk suppression in high-density installations, preventing electrical interference from nearby probe channels from corrupting the dynamic waveform essential for machine diagnostic evaluation.

Ordering info

• 1 x 330908-00-28-10-01-CN Proximity Probe
• 1 x Connector protector kit

Field Installation Guidelines

• Mechanical Mounting
  • Ensure the probe is mounted perpendicular to the target surface.
  • Use the provided locknuts to secure the probe once the target gap has been set.
• Electrical Termination
  • Verify the ClickLoc connector is fully seated to prevent intermittent signal continuity.
  • Route the coaxial cable away from high-power electromagnetic sources to minimize noise injection.
• Inspection
  • Check the probe tip for mechanical damage or dielectric contamination prior to installation.

Frequently Asked Questions

• What is the difference between the 3300 NSv and 3300 XL 8 mm probes?

  The NSv probe is designed specifically for smaller target surfaces, utilizing a different coil geometry and proximitor frequency response than the standard 8 mm probe.

• Is this probe compatible with standard 3300 XL extension cables?

  No. NSv probes require system-matched cabling and Proximitor sensors to ensure correct impedance and scale factor linearity.

• Can the probe tip be field-repaired if damaged?

  No. The probe tip and coaxial cable form a hermetically sealed, factory-calibrated assembly that cannot be repaired in the field.

• How should I address a high gap voltage fault?

  Inspect the probe-to-target gap and verify the integrity of the coaxial cable connections. Ensure the machine shaft is not moving outside the probe's linear range.

• Does the probe require an external DC power source?

  No. The probe is a passive component powered via the coaxial connection by the associated Proximitor sensor module.

• What happens if the connector protector is omitted?

  Debris or fluids may enter the connector interface, creating a conductive path that leads to signal noise, drift, or complete loss of measurement data.

• Can I use this probe in a hazardous area?

  Verify the product label against the specific area classification requirements for your facility, as agency approvals vary by configuration.

• Why is the signal saturated?

  Saturation occurs when the probe tip is too close to the target, causing the sensor to exceed its defined linear measurement range.