Product Overview

The Bently Nevada 330104-03-07-05-02-05 is a precision-engineered 8mm proximity probe belonging to the renowned 3300 XL Transducer System. This specific sensor is designed to solve complex mounting challenges in industrial machinery where standard transducer envelopes are too large. By utilizing a specialized tip and cable assembly, this probe provides non-contacting displacement and vibration measurements on rotating shafts. It serves as a vital component in Turbine Supervisory Instrumentation (TSI), allowing for the detection of radial vibration, axial thrust position, and speed (tachometer) feedback. Its compact profile makes it the definitive choice for installations involving counterbores or limited rear-view access.

Hardware Configuration and Measurement Parameters

• Probe Diameter: 8mm high-performance tip

• Thread Configuration: Metric M10 x 1 thread with 70mm threaded length

• Unthreaded Length: 30mm for specialized depth positioning

• Cable Length: 0.7 meters (approx. 2.3 feet)

• Connector Type: Miniature coaxial ClickLoc connector for secure signal coupling

• Physical Weight: 0.06 kg (Net) / 0.15 kg (Shipping)

• Probe Dimensions: 1.8 cm x 1.6 cm x 123 cm total length including lead

• Shipping Volume: 20.5 cm x 22.4 cm x 3.3 cm

• Safety Compliance: Certified for hazardous areas via CSA, ATEX, and IECEx

• System Compatibility: 3300 XL Proximitor Sensor and 3500 Monitoring Rack

Operational Use Cases

Small-Diameter Shaft Monitoring

This probe is specifically optimized for measuring radial vibration on shafts with diameters smaller than 51 mm (2 inches). Standard probes often suffer from "side-view" interference on small shafts, which this 8mm model successfully mitigates.

Fluid-Film Bearing Machinery

Ideally suited for pumps, compressors, and motors utilizing fluid-film bearings where internal clearances are extremely tight. It monitors the oil film thickness and rotor stability in real-time.

Axial Position and Thrust Detection

The 330104-03-07-05-02-05 is capable of monitoring axial thrust position on flat targets as small as 15 mm (0.6 inches), providing critical data to prevent catastrophic mechanical contact.

Keyphasor and Speed Measurements

Beyond vibration, it functions as a reliable Keyphasor signal generator, providing timing pulses for phase analysis and high-accuracy tachometer readings for speed-governing systems.

FAQ

Q: Can this probe be used in environments with explosive gases?

A: Yes, the 330104-03-07-05-02-05 holds international hazardous area certifications including ATEX, IECEx, and CSA, making it suitable for Zone 0, 1, and 2 installations when used with appropriate barriers.

Q: What makes the ClickLoc connector superior to standard coaxial connectors?

A: The ClickLoc miniature coaxial connector is designed to prevent accidental disconnection due to machine vibration and provides a more moisture-resistant seal than traditional threaded connectors.

Q: Is this probe compatible with the 3300 5mm Proximitor system?

A: No, this is an 8mm probe designed for the 3300 XL series. It must be paired with the correct 3300 XL Proximitor to ensure the voltage-to-distance (scale factor) calibration remains accurate.

Q: What is the benefit of the 30mm unthreaded length on this specific model?

A: The unthreaded portion allows the probe to pass through a mounting bracket or housing without the threads engaging, which is essential for certain counterbore installations or when using a probe sleeve.

Q: Does the 0.7-meter cable require an extension cable?

A: Most 3300 XL installations require a total system length of either 5.0 or 9.0 meters. This 0.7-meter probe typically connects to an extension cable to reach the Proximitor sensor located in a junction box.