Product Overview

The Bently Nevada 330101-00-67-20-02-05 is a high-performance 8 mm eddy current proximity probe engineered for the non-contacting measurement of shaft vibration and position. As a vital element of the 3300 XL Transducer System, this probe converts the physical gap between the sensor tip and a conductive target into a proportional voltage signal. This specific model features a 6.7-inch case length and a 2.0-meter integrated lead, providing the extended reach necessary for complex machinery housings. Built to satisfy the rigorous requirements of API 670 standards, it ensures exceptional linear accuracy and thermal stability for Turbine Supervisory Instrumentation (TSI) and critical machinery protection.

Technical Parameters and Hardware Architecture

• Sensing Tip Diameter: 8 mm

• Thread Configuration: 3/8-24 UNF-2A (Imperial)

• Total Case Length: 6.7 inches

• Unthreaded Length: 0.0 inches (Fully threaded case)

• Integrated Lead Length: 2.0 Meters (approx. 6.6 feet)

• Connector Interface: Miniature coaxial ClickLoc (gold-plated brass)

• Net Weight: 0.06 kg (Sensor only) / 0.15 kg (Shipping)

• Probe Dimensions: 1.8 cm x 1.6 cm x 123 cm (Lead total profile)

• Linear Range: 2.0 mm (80 mils)

• Scale Factor: 7.87 V/mm (200 mV/mil)

• System Compatibility: Fully interchangeable with all 3300 XL series components

Industrial Deployment and Machinery Protection

Radial Vibration Monitoring

In high-speed centrifugal compressors and fluid-film bearing pumps, this probe tracks the dynamic orbit of the shaft. By identifying excessive radial movement, it allows for the early detection of rotor imbalance, misalignment, or bearing degradation before catastrophic failure occurs.

Axial Thrust Positioning

The 330101-00-67-20-02-00 is frequently utilized in pairs to monitor the longitudinal (thrust) position of turbine rotors. This measurement is essential to prevent internal contact between rotating blades and stationary diaphragms.

Keyphasor and Timing Signals

Beyond vibration monitoring, this probe serves as a reliable Keyphasor reference. By detecting a notch or keyway on a rotating shaft, it provides a once-per-revolution pulse used for phase analysis and highly accurate speed feedback to the 3500 Monitoring System.

Harsh Environment Resilience

The probe tip is constructed from molded Polyphenylene Sulfide (PPS) plastic, providing superior resistance to chemical corrosion and high-temperature turbine oils. Its robust design ensures long-term signal integrity in the most demanding industrial zones.

FAQ

Q: Is it necessary to calibrate this 2.0-meter probe to its Proximitor sensor?

A: No. A defining feature of the 3300 XL 8 mm system is complete interchangeability. Any 3300 XL probe can be paired with any 3300 XL extension cable and Proximitor without the need for manual bench calibration.

Q: What is the benefit of the ClickLoc connector on this model?

A: The ClickLoc system provides a positive-locking mechanism that prevents the coaxial connection from vibrating loose. The gold-plated contacts ensure a high-conductivity path and resist the oxidative effects of industrial environments.

Q: Can this probe be used in hazardous area locations?

A: Yes. When used with appropriate intrinsic safety barriers, the 330101-00-67-20-02-00 is certified under ATEX, IECEx, and CSA standards for use in explosive atmospheres and hazardous industrial zones.

Q: How does the total system length affect the measurement?

A: The 3300 XL Proximitor is calibrated for a specific total electrical length (usually 5.0 or 9.0 meters). This 2.0-meter probe must be used with a 3.0-meter or 7.0-meter extension cable to reach the calibrated system total for accurate scaling.

Q: Is the probe tip resistant to high temperatures?

A: Yes, the 3300 XL 8 mm probes are designed to operate reliably in temperature ranges from -51°C to +177°C (-60°F to +351°F), making them ideal for high-heat bearing housings.