Bently Nevada 330101-12-40-10-02-05 3300 XL 8 mm Proximity Probe

Bently Nevada 330101-12-40-10-02-05 3300 XL 8 mm Proximity Probe

The Bently Nevada 330101-12-40-10-02-05 is a rugged eddy-current proximity probe from the 3300 XL 8 mm series, designed for precise vibration and shaft position monitoring in fluid-film bearing machinery.

Suffix Breakdown & Model Matrix

• 330101: 3300 XL 8 mm proximity probe, unarmored, 3/8‑24 UNF thread
• 12: Unthreaded length option (1.2 in)
• 40: Overall case length option (4.0 in)
• 10: Cable length option (1.0 m / 3.3 ft)
• 02: Miniature coaxial ClickLoc connector without protector
• 05: Agency approvals (CSA, ATEX, IECEx)

Technical Specifications

Application Context

• Radial vibration monitoring for turbines, compressors, and pumps.
• Axial thrust position measurement in fluid-film bearing systems.
• Keyphasor/speed reference for rotor dynamics and diagnostics.

Frequently Asked Questions

Q: Is this probe suitable for hazardous environments? A: Yes. Option 05 provides CSA, ATEX, and IECEx certifications.

Q: What is the nominal scale factor? A: Approximately 200 mV/mil (7.87 V/mm).

Q: Can it measure both static and dynamic values? A: Yes. It is designed for static shaft position and dynamic vibration monitoring.

Field Installation Guidelines

• Install probe tip perpendicular to shaft surface for accurate displacement readings.
• Maintain coaxial shielding integrity; ground only at the Proximitor end.
• Route probe cables away from high-voltage conductors to minimize EMI.
• Confirm gap voltage (–9 VDC to –11 VDC nominal) during commissioning.
• Inspect PPS tip and stainless steel case for mechanical integrity before installation.