Description

The Bently Nevada 330101-00-08-05-02-00 is an unarmored 8 mm proximity probe configuration within the 3300 XL proximity transducer system. Designed for high-reliability, non-contact vibration and shaft position measurements, this specific variant features a fully threaded 3/8-24 UNF stainless steel body with 0.0 inches of unthreaded length (Segment A: 00) and an overall compact case length of 0.8 inches (Segment B: 08). This design provides maximum installation depth flexibility in bearing housings and restricted machine casings. It is equipped with an integrated 0.5-meter (1.6 feet) standard coaxial cable (Segment C: 05) terminated with a miniature coaxial ClickLoc connector (Segment D: 02) without a connector protector. As a standard industrial-grade configuration, it is specified for applications where hazardous area approvals are not required (Segment E: 00).

This eddy-current proximity probe operates seamlessly within a 3300 XL monitoring chain, pairing with a 3300 XL Proximitor sensor and a standard extension cable to deliver highly accurate displacement readings of rotating shafts. It serves as a vital component in machinery protection systems (TSI), transmitting precise dynamic motion and position feedback to monitor shaft vibration, axial thrust position, and oil-film bearing clearances.

Features

• Eddy-current operating principle for non-contact, high-precision displacement and vibration measurement.
• Fully threaded probe body with 0.0 inches of unthreaded length, allowing maximum positioning adjustment during mounting.
• Short 0.8-inch overall stainless steel case length, optimized for shallow or tight space envelopes.
• Integrated 0.5-meter standard coaxial cable designed for high signal reliability.
• Miniature coaxial ClickLoc connector for quick, secure connection to extension cables.
• Excellent thermal stability with a wide operating temperature range from -52 degC to +177 degC.
• Compatible with Bently Nevada 3300 XL 8 mm Proximitor sensors and 3500 monitoring systems.

Applications

This proximity probe is typically deployed across critical rotating machinery in power generation, oil and gas, petrochemical, and heavy industrial processing environments. Specific applications include:

• Steam and gas turbine shaft vibration and radial dynamic motion monitoring.
• Turbine, compressor, and pump rotor axial displacement (thrust) measurements.
• Fluid-film bearing clearance checks and oil-film thickness assessments.
• Keyphasor and speed measurement on high-speed industrial shafts.

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

To ensure proper performance and avoid machinery damage during operation, observe the following engineering guidelines:

• Mount the probe securely using an appropriate threaded port or mounting bracket. Use the fully threaded case design to set the exact physical gap.
• Ensure the probe gap is calibrated precisely, typically positioned at 1.27 mm (50 mils) from the shaft target, which corresponds to approximately -9 Vdc at the Proximitor sensor output.
• Verify that the shaft target meets standard AISI 4140 steel composition for optimal eddy-current calibration accuracy.
• Route the coaxial extension cable with appropriate shielding and physical protection to isolate the high-frequency signal from adjacent electromagnetic noise.
• Do not bend the cable tighter than its minimum bend radius to prevent internal copper core or shield fractures.

Compliance and Certifications

• Manufactured under strict ISO 9001 quality management procedures.
• Designed for integration into industrial machinery protection systems complying with API 670 standards.
• CE marked for general industrial environments.
• RoHS compliant.