Configured for precision displacement monitoring, the Bently Nevada 330901-10-25-10-02-00 (330901-10-25-10-02-00 Proximity Probe) provides direct physical signal execution for measuring shaft radial motion in constrained mechanical environments.

Suffix Breakdown

• 330901: Base Model (3300 NSv Proximity Probe)
• 10: 1.0 meter (39 in) total length
• 25: 2.5 in case length (1.0 in minimum unthreaded)
• 10: 1/4-28 UNF thread, no armor
• 02: Miniature coaxial ClickLoc connector with connector protector
• 00: No agency approval required

Hardware Specifications

Mechanical Monitoring and Transducer Dynamics

The 3300 NSv transducer system is optimized for small-diameter shaft applications. Precise eddy-current probe scaling is required to maintain linear output for displacement measurements. During installation, gap voltage validation against -10 VDC targets ensures the probe operates within its linear measurement range. The system design incorporates cross-talk suppression, enabling high-density probe mounting on limited surface areas. Rotor dynamics data integrity is maintained by the shielded ClickLoc connector interface, which minimizes signal degradation and prevents environmental contamination in industrial monitoring installations.

Ordering Info

• 1 x 330901-10-25-10-02-00 Proximity Probe
• 1 x ClickLoc connector protector

Field Installation Guidelines

• Mechanical Mounting: Thread the 1/4-28 UNF probe into the mounting bracket; ensure a minimum of 5 threads of engagement for structural stability.
• Gap Setting: Use a feeler gauge or depth micrometer to set the probe gap; target a -10 VDC signal when the shaft is at its nominal mid-range position.
• Cabling: Use only the supplied 1.0 meter coaxial cable; avoid sharp bends and route away from high-power electromagnetic sources to prevent noise induction.
• Grounding: Ensure the probe body is electrically connected to the machine frame; avoid creating ground loops if the probe housing must be isolated from the machine.

Frequently Asked Questions

• Why is the 3300 NSv series preferred for small shafts?

  The NSv probe design offers a smaller sensing element than standard 8 mm probes, providing superior linearity and range for shafts smaller than 1 inch in diameter.

• Can I shorten the 1.0 meter cable?

  No, the system is factory-calibrated as a complete set including the specific probe, extension cable, and Proximitor sensor; shortening the cable will introduce signal error.

• Is the connector protector necessary?

  Yes, the protector prevents oil and debris from entering the ClickLoc connector, maintaining electrical contact integrity in harsh machine environments.

• How do I verify the probe is functioning correctly?

  Check the output voltage at the Proximitor sensor terminals; it should remain within the expected range for the given gap distance during static shaft conditions.

• Is the probe polarity sensitive?

  The eddy-current sensor is not polarity sensitive, but signal transmission requires proper coaxial shielding connections to the associated Proximitor.

• What determines the unthreaded length requirement?

  The 1.0 inch minimum unthreaded length ensures that the probe tip is sufficiently clear of the mounting bracket to avoid parasitic inductance and measurement non-linearity.

• Can this probe be used with standard 8 mm Proximitor sensors?

  No, the 3300 NSv probe must be paired with the matching NSv Proximitor sensor to ensure correct frequency and voltage output characteristics.

• How does the ClickLoc connector simplify field maintenance?

  The ClickLoc design provides a secure, locking mechanical connection that can be quickly disconnected for maintenance without the need for specialized tools.