Configured for shaft displacement measurement in Bently Nevada TSI monitoring systems, the Bently Nevada 330907-05-30-10-12-00 (3300 NSv Proximity Transducer) provides direct eddy-current sensing for vibration, axial position, tachometer, and phase reference measurements.

Model Configuration Overview

The 330907-05-30-10-12-00 is a 3300 XL NSv reverse mount proximity probe designed for restricted installation areas where standard 3300 and 3300 XL 5 mm or 8 mm probes cannot be installed due to counter bore, side-view, or rear clearance limitations.

The assembly uses a 5 mm probe diameter, 30 mm probe case length, M10 x 1 mounting thread, 1.0 m cable length, miniature coaxial ClickLoc connector, and FluidLoc cable construction.

Hardware Specifications

Eddy-Current Scaling and Rotor Dynamics Monitoring

The 3300 XL NSv system uses eddy-current probe scaling to convert shaft displacement into electrical output signals. The probe operates with a calibrated relationship between target distance and voltage output, allowing monitoring systems to evaluate radial vibration, axial position, and phase reference signals.

Gap voltage validation should be performed during commissioning to confirm correct probe positioning. Bently Nevada proximity systems typically use approximately -10 VDC as the nominal gap reference point for probe operation.

The reverse mount construction allows installation in compact mechanical arrangements while maintaining measurement performance for rotor dynamics applications involving small shafts and restricted bearing housings.

Ordering Information

The delivered assembly includes:

• 1 x Bently Nevada 330907-05-30-10-12-00 3300 XL NSv Reverse Mount Probe
• 1 x 5 mm reverse mount proximity probe assembly
• 1 x 1.0 m FluidLoc cable
• 1 x Miniature Coaxial ClickLoc connector interface

Additional items such as proximity sensors, extension cables, monitor modules, calibration equipment, and TSI rack hardware are supplied separately unless specified.

Field Installation Guidelines

Mechanical Installation

• Verify the M10 x 1 mounting thread condition before installation.
• Install the probe with correct reverse mounting orientation.
• Avoid excessive mechanical force on the probe case and connector section.
• Apply torque according to the specified probe case limitation.

Electrical Installation

• Use shielded three-conductor wiring for connection to monitoring electronics.
• Separate signal wiring from high-current power cables.
• Connect cable shielding according to the monitoring system grounding requirements.

Gap Adjustment

• Set the probe position according to the machinery monitoring calibration procedure.
• Confirm the operating gap voltage before machine startup.
• Verify stable vibration and position signals after installation.

Technical FAQ

• What type of measurement does the 330907 probe provide?

  The probe provides non-contact shaft displacement measurement using eddy-current sensing technology for vibration and position monitoring.

• What is the main difference between NSv and standard 3300 probes?

  The 3300 XL NSv design provides a smaller mechanical profile for installations requiring reduced clearance or restricted viewing space.

• Can this probe measure axial position signals?

  Yes. The probe can be configured for axial thrust position measurement when installed with a suitable target surface.

• What is the nominal operating gap for this probe?

  The typical nominal gap setting is 1.0 mm, providing approximately 1.5 mm of linear measurement range.

• Does the probe require a separate extension cable?

  No. This configuration includes a 1.0 m integrated FluidLoc cable with ClickLoc connector.

• What wiring type is recommended for installation?

  A shielded three-conductor cable installation is recommended to maintain signal integrity and reduce electrical interference.

• What should be checked after probe installation?

  Verify mechanical alignment, mounting torque, gap voltage, cable routing, and stable output signal before operation.

• Is the probe compatible with previous RAM systems?

  The 3300 XL NSv probe is mechanically and electrically compatible with previous 3300 RAM transducer system applications.