Product Overview

The Bently Nevada 330101-00-38-90-02-00 is a high-precision eddy current proximity probe, serving as a cornerstone of the 3300 XL transducer system. This 8 mm probe is engineered for non-contacting measurement of shaft vibration and axial position in critical rotating machinery. Designed to exceed API 670 standards, it provides high-resolution data necessary for machinery protection and condition monitoring. By utilizing an eddy current principle, the sensor detects the distance between the probe tip and the target material—typically AISI 4140 steel—converting mechanical displacement into a linear voltage signal when paired with a Proximitor sensor.

Hardware Parameters and Technical Specifications

This specific configuration of the 3300 XL series features advanced mechanical bonding and complete system interchangeability, allowing for seamless integration without the need for manual calibration of individual components.

• Model Identification: 330101-00-38-90-02-00

• Probe Tip Diameter: 8 mm

• Thread Configuration: 3/8-24 UNF (Standard English Thread)

• Unthreaded Length: 0.0 inches (Option -00)

• Overall Case Length: 3.8 inches (Option -38)

• Total System Length: 9.0 meters (Option -90)

• Connector Type: Miniature coaxial ClickLoc connector (Option -02)

• Agency Approvals: Standard multi-certification (Option -00)

• Mechanical Strength: Patented CableLoc design provides 330N (75 lb) pull strength

• Linear Range: 2.0 mm (80 mils), typically starting at 0.25 mm (10 mils) from the tip

• Scale Factor: 7.87 V/mm (200 mV/mil) when used with a matching 3300 XL Proximitor

Industrial Applications and Operational Use Cases

The 330101-00-38-90-02-00 is widely deployed across power generation, oil and gas, and petrochemical sectors to ensure the health of fluid-film bearing machines.

• Radial Vibration Monitoring: Essential for identifying rotor unbalance, misalignment, and mechanical looseness by tracking shaft orbits within the bearing.

• Axial Position (Thrust) Tracking: Prevents catastrophic machine failure by monitoring axial displacement to ensure rotor-to-stator clearances are maintained.

• Keyphasor and Speed Sensing: Supplies once-per-turn phase references and high-speed RPM measurements for diagnostic timing and phase analysis.

• Harsh Environment Resilience: Features TipLoc molding to prevent tip-to-case bonding failure and is available with FluidLoc technology to block oil migration through the cable interior.

• Predictive Maintenance Integration: Supplies stable, linear data to Bently Nevada 3500 series monitoring racks for real-time alarming and long-term trend analysis.