Bently Nevada 330905-00-20-10-02-00 3300 NSv Proximity Probe

Configured for non-contacting vibration and position monitoring in rotating machinery, the Bently Nevada 330905-00-20-10-02-00 (330905 Proximity Probe) provides direct physical signal transduction within 3300 NSv systems.

Suffix Breakdown & Model Matrix

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

The 3300 NSv system relies on accurate eddy-current probe scaling to convert target surface displacement into a proportional voltage signal. This probe must be calibrated to a target sensitivity of 7.87 V/mm (200 mV/mil). During installation, the gap voltage must be validated against a -10 VDC nominal target at the center of the linear range. Deviation from this target indicates potential misalignment or proximity to non-target conductive materials, which can introduce errors in rotor dynamics analysis and false readings in axial position or radial vibration channels. Proper cross-talk suppression is achieved by maintaining recommended physical separation between adjacent probes.

Frequently Asked Questions

Q: Does the FluidLoc cable require additional sealing when routed through hazardous areas?

A: The FluidLoc cable construction prevents longitudinal wicking of process fluids, but it does not replace the requirement for approved conduit or barrier seals when traversing hazardous area boundaries.

Q: Is the ClickLoc connector compatible with older Bently Nevada connector styles?

A: No. The ClickLoc connector is a proprietary design intended for the 3300 NSv series and is not physically or electrically compatible with older generation BNC or standard coaxial connectors used in legacy 3300 or 7200 systems.

Field Installation Guidelines

• Probe Gap Setting: Set the probe gap relative to the rotor shaft using a feeler gauge or calibrated micrometer. Ensure the lock nuts are tightened to the specified torque to prevent vibration-induced loosening.
• Cable Routing: Route the 2.0 meter coaxial cable away from potential mechanical pinch points. Secure the cable to the machine casing using appropriate clips to prevent cable fatigue.
• Grounding: Ensure the Proximitor sensor is mounted on a clean, paint-free surface to maintain electrical continuity between the sensor case and the system common/earth ground.
• Connection Integrity: Ensure the ClickLoc connector is fully engaged until an audible 'click' is heard. Verify the connection by applying a slight pull force; the connection should remain secure up to the rated 220 N limit.