Configured for high-precision displacement sensing in industrial monitoring platforms, the Bently Nevada 330910-06-25-05-11-00 (330910 Proximity Probe) provides direct physical signal transduction of rotor position and vibration within confined mechanical clearances.

Suffix Designation and Configuration Matrix

The 330910-06-25-05-11-00 identifies the following physical and mechanical parameters:

• 06: M10 x 1 threaded probe with integrated armor.

• 25: Unthreaded case length of 60 mm and total length of 250 mm.

• 05: 0.5 meter (20 in) integral cable length.

• 11: Miniature coaxial ClickLoc connector with connector protector and FluidLoc cable.

• 00: No special agency approval required.

Hardware Specifications

Rotor Dynamics and TSI Monitoring

The 3300 NSv probe is designed specifically for small-diameter shaft monitoring where standard probes lack sufficient dynamic range. Achieving accurate rotor dynamics analysis requires precise eddy-current probe scaling. During setup, users must perform gap voltage validation to target -10 VDC at the Proximitor output, ensuring the system remains within its linear range. Cross-talk suppression is supported by the system's high-frequency carrier design, allowing for close-proximity installation of multiple probes without interference between adjacent channels.

Ordering Information

• 1 x 330910-06-25-05-11-00 Proximity Probe.

• 1 x Integrated connector protector.

• 1 x M10 x 1 mounting nuts (factory installed).

Field Installation Guidelines

• Probe Mounting

• Thread the probe into the mounting bracket until the tip reaches the target.

• Back the probe off to reach the specified gap voltage (-10 VDC).

• Tighten the locknuts to secure the probe against vibration-induced displacement.

• Cabling and Shielding

• Route the armored cable through conduit to prevent mechanical damage.

• Do not compromise the FluidLoc cable seal at the connector; ensure the connector protector is fully seated.

• Ensure the shield is grounded only at the monitoring rack to avoid ground loop interference.

Frequently Asked Questions

• What is the purpose of the FluidLoc cable?

  FluidLoc cable is designed to prevent oil or other process fluids from migrating through the cable assembly, protecting the sensor electronics from contamination.

• Can this probe be used for high-temperature applications?

  Consult the 3300 NSv system technical manual for specific temperature ratings; using the probe beyond rated limits will degrade accuracy and service life.

• Why is the probe M10 threaded?

  The M10 x 1 thread is selected for compact installation in equipment where standard 3/8-24 or 1/2-20 threads are physically too large for the mounting site.

• How do I verify the gap voltage?

  Connect a high-impedance digital voltmeter to the output terminals of the corresponding Proximitor sensor and adjust the probe until the target -10 VDC is observed.

• Is the connector interchangeable with standard probes?

  No, the 3300 NSv uses a miniature coaxial ClickLoc connector, which is not physically compatible with standard 3300 XL probe connectors.

• What happens if the armor is bent too tightly?

  Excessive bending can cause internal deformation of the coaxial cable, changing its characteristic impedance and resulting in signal distortion or loss.

• Can I shorten the integral cable?

  No, the system is calibrated as a matched set (probe + cable + Proximitor). Shortening the cable will alter the system response and render calibration invalid.

• Does this probe require a specific Proximitor model?

  Yes, it must be paired with a 3300 NSv Proximitor sensor specifically calibrated for the 3300 NSv probe frequency and impedance characteristics.