Bently Nevada 330171-00-22-10-11-05 3300 5 mm Proximity Probe

Bently Nevada 330171-00-22-10-11-05 3300 5 mm Proximity Probe

The Bently Nevada 330171-00-22-10-11-05, also cataloged as the 330171 Proximity Probe, serves as the primary 5 mm eddy-current probe utilized to execute displacement measurement across 3300 series monitoring platforms.

Suffix Breakdown & Model Matrix

• 330171: 3300 5 mm Proximity Probe, 1/4-28 UNF thread, without armor
• -00: Unthreaded length option (0.0 inches)
• -22: Overall case length option (2.2 inches)
• -10: Integral cable length (1.0 meter / 3.3 feet)
• -11: Miniature coaxial ClickLoc connector with protector and FluidLoc cable
• -05: Agency approval option (multiple hazardous area certifications)

Hardware Specifications

Eddy-Current Probe Scaling

The 330171 probe employs eddy-current scaling to translate physical displacement into voltage signals. Calibration is standardized with -10 VDC gap voltage references, ensuring linearity across the 5 mm measurement range. This scaling supports rotor dynamics analysis and minimizes cross-talk when multiple probes are installed in confined geometries.

Frequently Asked Questions

Q: Can the 330171 probe be directly connected to a 3300 XL Proximitor? A: No, the 3300 5 mm probe requires its designated 3300 Proximitor; XL variants are not interchangeable.

Q: What is the recommended grounding practice for the FluidLoc cable? A: Shielding should be grounded at the Proximitor end only to prevent ground loop currents.

Q: How does the stainless steel case material affect installation? A: AISI 304 stainless steel provides mechanical durability and corrosion resistance, suitable for harsh industrial environments.

Field Installation Guidelines

• Engage 1/4-28 UNF threads with at least 5 turns for secure seating.
• Route integral cable separately from high-voltage conductors to minimize induced noise.
• Ground shielding only at the Proximitor termination.
• Verify -10 VDC gap voltage calibration during commissioning.
• Maintain probe tip cleanliness; PPS material must not be exposed to abrasive contaminants.