Description

Bently Nevada 330106-05-30-05-02-05 3300 XL 8mm Reverse Mount Proximity Probe

The Bently Nevada 330103-05-30-05-02-05 is a specialized reverse mount proximity probe belonging to the 3300 XL 8mm Transducer System. This precision sensor is designed for non-contacting displacement measurements, specifically for applications where mounting space is restricted or where the probe must be installed from the opposite side of the mounting bracket. By utilizing eddy current technology, the probe tracks shaft vibration and axial position with high resolution. As a result, it provides the critical data necessary for the 3500 Monitoring System to protect high-speed rotating assets like turbines, compressors, and pumps from mechanical failure.

Advanced Technical Design and Integrity

Engineered for the most demanding industrial zones, this 3300 XL probe features a robust polyphenylene sulfide (PPS) tip that is hermetically sealed to prevent the ingress of liquids. Furthermore, the reverse mount configuration (3/8-24 UNF thread) allows for easy gapping in tight housing geometries. In addition, the cable is constructed with high-quality coaxial materials that maintain a constant electrical impedance, ensuring linear signal output across the entire measurement range. Consequently, the sensor remains immune to the common interference found in power generation and oil and gas facilities, such as electromagnetic noise and high-frequency vibration.

Technical Specification Overview

Industrial Applications and Strategic Maintenance

The 330106 series probe is an essential component of Turbine Supervisory Instrumentation (TSI).¹ Specifically, it excels in monitoring radial shaft vibration and thrust position in equipment where standard forward-mount probes cannot be installed. Therefore, it is a vital tool for predictive maintenance programs aiming to reduce unplanned downtime. Moreover, the integration of the ClickLoc connector ensures a vibration-proof coupling to extension cables. By doing so, Bently Nevada provides a long-term, low-maintenance solution that optimizes the operational lifespan of critical machinery while meeting the strict requirements of the API 670 standard.²

FAQ

What makes the reverse mount configuration unique?

The reverse mount design allows the probe to be threaded into a mounting hole from the “outside” or back of the bracket. Furthermore, it is typically used with a probe housing or in instances where internal machine clearance is extremely limited. Accordingly, it provides engineers with greater flexibility during the design and retrofitting of bearing housings.

Does this 0.5-meter probe require an extension cable?

Yes, most 3300 XL Proximitor sensors are calibrated for a 5.0 or 9.0-meter total system length. Specifically, a 0.5-meter probe is usually paired with a 4.5-meter or 8.5-meter extension cable. As a result, failure to match the probe with the correct extension cable length will cause inaccurate displacement readings.3

How does the probe withstand industrial chemicals?

The probe tip and cable jacket are manufactured from chemically resistant fluoropolymers and PPS. In addition, the reverse mount case is made of 300-series stainless steel. Consequently, the sensor is fully protected against the corrosive effects of synthetic lubricants, moisture, and common industrial solvents.

Is this probe compatible with older 7200 series systems?

While the 3300 XL system is primarily designed for XL Proximitors, it is often backward compatible with older Bently Nevada hardware.4 However, you must verify the scale factor (typically 200 mV/mil) to ensure the monitor is programmed correctly for the 3300 XL signal. Nevertheless, upgrading to the full 3300 XL chain is recommended for maximum performance.