Configured for non-contacting vibration and displacement measurement in industrial rotating machinery, the Bently Nevada 330905-00-05-05-05-02-05 (330905 3300 NSv Proximity Probe) provides direct physical signal execution by sensing the gap between the probe tip and a metallic target.

Model Suffix Breakdown

The part number defines specific mechanical and electrical parameters:

• 330905: 3300 NSv Proximity Probe

• 00: Unthreaded length identifier

• 05: Case length (50 mm)

• 05: Total length (0.5 meters)

• 05: Connector type (Miniature coaxial ClickLoc)

• 02: Agency approval (Standard)

• 05: Mounting option

Hardware Specifications

TSI Mechanical Monitoring and Signal Validation

The 3300 NSv system is engineered for small-shaft applications where standard probe performance is constrained by target size. Accurate eddy-current probe scaling is attained by calibrating the probe with its matched NSv Proximitor, targeting a nominal -10 VDC gap voltage at the center of the linear range. Maintenance of rotor dynamics data integrity requires consistent probe positioning. To ensure cross-talk suppression, physical separation from adjacent metallic structures and other electromagnetic fields is necessary to prevent signal interference during low-amplitude displacement measurement.

Ordering info

• 1 x 330905-00-05-05-05-02-05 3300 NSv Proximity Probe

• 2 x Mounting nuts

• 1 x Connector protector

• 1 x Technical installation documentation

Field Installation Guidelines

• Structural Mounting: Install the probe in a rigid, non-conductive, or grounded metallic mount to minimize mechanical resonance.

• Threaded Interface: Tighten mounting nuts to specified torque to ensure structural stability; avoid excessive force.

• Grounding: Bond the probe and Proximitor common to the machine earth ground to facilitate electrostatic charge dissipation and shield continuity.

• Environmental Protection: Use the provided connector protector to maintain IP-rated integrity at the coaxial interface, preventing moisture and particulate ingress.

Frequently Asked Questions

• Why is the NSv probe used instead of standard 8 mm probes? The NSv probe is designed specifically for small-diameter shafts where the target area is insufficient for standard probe linearization.

• Can the probe tip be removed? No, the probe assembly is factory-integrated and hermetically sealed within the stainless steel housing.

• What is the impact of cable length variation? The 0.5 meter cable length is factory-calibrated; any impedance deviation from non-standard lengths will induce significant measurement errors.

• How do I identify a faulty transducer? A "Not OK" status in the monitor rack, typically indicated by a voltage reading at the power supply limit, indicates an open or short circuit.

• Is the housing material conductive? Yes, the stainless steel casing is used for effective electrostatic charge dissipation.

• Can this be used in explosive environments? Verify the specific agency approval suffix against site-specific hazardous area classification requirements.

• Is the probe compatible with existing conduit systems? Yes, the design is compatible with standard industrial conduit and cable gland interfaces.

• How is thermal expansion accounted for? Probe installation must account for machine casing thermal expansion to keep the gap within the specified linear operating range.