Description

Fully threaded 3/8-24 UNF probe body (Option 00) with 7.6 in overall case length (Option 76), 1.0 m standard total cable length (Option 10), Miniature coaxial ClickLoc connector (Option 02), and agency approval for hazardous areas (Option 05) specifies this 3300 XL 8 mm probe configuration — 330101-00-76-10-02-05. This specific configuration is suited for installations requiring an extended-reach threaded case with zero unthreaded length, allowing deep mounting inside bearing housings or custom machinery casings where external mechanical protection is handled by existing structures.

This Bently Nevada 3300 XL 8 mm proximity probe functions as a non-contact eddy-current sensor, capturing dynamic shaft vibration and axial position measurements in rotating machinery. Unlike armored configurations, this unarmored variant utilizes a standard coax cable intended for routing within protective conduits, interfacing directly with a 3300 XL Proximitor sensor and standard extension cables to provide calibrated linear displacement feedback.

Features

• 8 mm tip diameter eddy-current displacement sensor for non-contact measurements.
• Fully threaded 3/8-24 UNF stainless steel body (Option 00, 0.0 in unthreaded length).
• 7.6 in overall case length (Option 76) for deep-reach housing installations.
• 1.0 m standard coaxial cable (Option 10) with Miniature coaxial ClickLoc connector (Option 02).
• Multi-agency approvals (Option 05) including CSA, ATEX, and IECEx for hazardous environments.
• Chemically resistant Ryton tip and rugged mechanical assembly for demanding machine environments.

Applications

• Turbine shaft vibration and axial position monitoring.
• Thrust bearing wear and radial displacement tracking in high-speed compressors.
• Rotor position and shaft runout detection in industrial pumps and gearboxes.
• Critical rotating machinery protection in oil, gas, power generation, and petrochemical plants.

Ordering Information

Technical Specifications

Installation Guidelines

• Mount with appropriate probe gap per system calibration (typically 1.27 mm or 50 mils for mid-range calibration with AISI 4140 steel target).
• Recommended connector torque: Two 3300 XL gold "click" type connectors should be tightened finger tight.
• Route cables through standard protective conduits or cable trays to prevent physical damage to the unarmored coaxial cable.
• Maintain proper shielding and grounding practices for vibration monitoring installations; ensure the outer conductor shield is isolated from the bearing housing and grounded at the monitor end.
• Observe minimum thread engagement limits of 0.563 inches for 3/8-24 UNF threads to prevent binding.
• Exposing the probe to temperatures below -34 degC (-30 degF) may cause premature failure of the Viton pressure seal.

Compliance and Certifications

• CSA, ATEX, IECEx Approvals (Option 05) for hazardous areas.
• Certified for intrinsically safe (Ex ia IIC T5...T1 Ga) and non-sparking/increased safety (Ex nA/Ex ec IIC T5...T1 Gc) installations.