330901-05-55-05-11-05 | Bently Nevada | Proximity Probe

Bently Nevada 330901-05-55-05-11-05 3300 NSv Proximity Probe

The Bently Nevada 330901-05-55-05-11-05 serves as the primary 330901 proximity probe utilized to execute radial vibration and axial thrust position measurements across turbine supervisory instrumentation (TSI) platforms.

Suffix Breakdown & Model Matrix

• 330901: 3300 NSv Proximity Probe component
• 05: Unthreaded length option
• 55: Total case length option (5.5 cm)
• 05: Total length option
• 11: Connector option
• 05: Agency approval option

Hardware Specifications

Rotor Dynamics and Cross-Talk Suppression

The probe is engineered for rotor dynamics monitoring in turbomachinery with restricted access. Gap voltage validation against -10 VDC reference targets ensures displacement accuracy. Coaxial shielding and connector design provide cross-talk suppression, maintaining signal fidelity in multi-channel installations.

Frequently Asked Questions

Q: Can this probe measure both radial and axial parameters? A: Yes. It supports radial vibration and axial thrust position measurements when paired with a compatible NSv Proximitor sensor.

Q: Is hot-swap replacement possible? A: Mechanical replacement is possible, but electrical reconnection requires isolation of the Proximitor interface.

Q: Does the probe require calibration? A: No bench calibration is required; it is interchangeable with standard NSv extension cables and Proximitor sensors.

Field Installation Guidelines

• Mount using the specified unthreaded option with secure seating to avoid mechanical drift.
• Route the 5.5 cm case probe cable with minimal stress and proper shielding termination.
• Ensure grounding at the Proximitor end to suppress external interference.
• Validate hazardous area approvals before installation in ATEX or IECEx zones.
• Perform gap voltage checks (-10 VDC reference) during commissioning to confirm measurement accuracy.