Bently Nevada 330101-00-63-10-02-00 3300 XL 8 mm Proximity Probe

Technical Overview

The Bently Nevada 330101-00-63-10-02-00 is a high-precision eddy current sensor designed for non-contact measurement of vibration and position. As a core component of the 3300 XL 8 mm Transducer System, this probe monitors the dynamic and static distance between the sensor tip and a rotating shaft. Because the system utilizes electromagnetic induction, it provides highly accurate data even in presence of oil, water, or steam, making it the industry standard for machinery protection in critical rotating assets.

Configuration and Design Features

This specific probe configuration is engineered to meet precise mechanical and electrical installation requirements. The 330101 series features a 3/8-24 UNF threaded body, which allows for standard mounting in bearing housings. With a “63” unarmored cable length (6.3 meters), this model provides significant reach for routing through internal machine spaces without the bulk of stainless steel armor.

The probe tip consists of high-strength polyphenylene sulfide (PPS), which provides a hermetic seal against harsh industrial fluids. Furthermore, the unit features a miniature coaxial connector (02) and follows a 1.0-meter (10) total length calibration for the probe lead itself. Consequently, when paired with a matching 3300 XL Proximitor sensor and extension cable, the system delivers a linear scale factor of 200 mV/mil (7.87 V/mm) over a 2.0 mm range.

Key Technical Characteristics

• Brand: Bently Nevada
• Model Code: 330101-00-63-10-02-00
• System Type: 3300 XL 8 mm Proximity Transducer
• Thread Size: 3/8-24 UNF
• Unarmored Cable Length: 6.3 Meters
• Total Length: 1.0 Meter
• Connector Type: Miniature Coaxial Connector
• Linear Range: 2.0 mm (80 mils)
• Operating Temperature: -52°C to +177°C (-62°F to +351°F)
• Approvals: Multiple global hazardous area certifications (standard)

Primary Applications

• Measuring radial vibration in large steam and gas turbines.
• Monitoring axial thrust position to prevent catastrophic bearing failure.
• Providing Phase Reference (Keyphasor) signals for multi-plane balancing.
• Tracking shaft eccentricity during startup and coast-down cycles.
• Monitoring vibration in high-speed centrifugal compressors and pumps.