Bently Nevada 330101-55-90-10-01-CN 3300 XL 8 mm Probe without Armor

Technical Specifications Breakdown

Key parameters for the 330101-55-90-10-01-CN are listed below for quick reference:

Industry Applications and Engineering Benefits

Turbomachinery Protection

In steam turbines, gas turbines, and compressors, the 3300 XL 8 mm Probe delivers a linear range of 2 mm (80 mils) with an incremental scale factor of 7.87 V/mm (200 mV/mil) ± 5% for standard systems. This high sensitivity enables operators to detect subtle shaft vibrations before they escalate into catastrophic failures. The probe’s patented TipLoc molding method provides a more robust bond between the probe tip and the probe body, ensuring consistent readings even under thermal cycling.

Pump and Motor Monitoring

Centrifugal pumps and large electric motors often operate in environments with high humidity or potential liquid ingress. The optional FluidLoc cable option prevents oil and other liquids from leaking out of the machine through the cable’s interior, reducing maintenance interventions. The probe’s stainless steel case (AISI 303 or 304 SST) resists corrosion, while the PPS probe tip offers a thicker encapsulation of the probe coil for enhanced ruggedness.

Installation and Setup Guidance

Proper probe installation is critical for accurate vibration data. For the 330101-55-90-10-01-CN, ensure the mounting surface is clean and free of debris. The recommended gap setting for radial vibration is -9 Vdc, approximately 1.27 mm (50 mils). Use field wiring of 0.2 to 1.5 mm² (16 to 24 AWG) with a 3-conductor shielded triad cable. Maximum field wiring length between the 3300 XL Proximitor Sensor and the monitor is 305 meters (1,000 feet). Always consult the frequency response graphs for signal rolloff at high frequencies when using longer wiring.

Maintenance and Reliability

The probe is designed to seal differential pressure between the probe tip and case using a Viton® O ring. Exposing the probe to temperatures below -34°C (-30°F) may cause premature failure of the pressure seal. For extended temperature range systems, the probe tip can operate from -52°C to +218°C (-62°F to +425°F). Inspect the probe and cable periodically for physical damage, especially in high-vibration or high-temperature environments. The probe’s CableLoc design provides 330 N (75 lbf) pull strength to more securely attach the probe cable and probe tip.

Reliable Vibration Monitoring with the Bently Nevada 330101-55-90-10-01-CN

When critical rotating machinery experiences unexpected vibration, unplanned downtime and costly repairs follow. The Bently Nevada 330101-55-90-10-01-CN 3300 XL 8 mm Probe provides the precise, rugged measurement needed to detect early signs of shaft instability, imbalance, or misalignment. This probe is engineered for applications where accuracy and durability are non-negotiable.

Compatibility and Integration

This 8 mm probe is part of the 3300 XL series and is designed to work with Bently Nevada extension cables and Proximitor sensors. The miniature coaxial ClickLoc connector ensures a secure, quick connection. Country Specific Approval (CN) is included for applicable regions. For systems requiring extended temperature range or FluidLoc cable options, contact AutoDCSTech to verify compatibility.

Selection Guide and Purchasing Advice

When selecting a replacement or new probe, confirm the thread type (3/8-24 UNF), unthreaded length (5.5 in), overall case length (9.0 in), and total length (1.0 metre). The 330101-55-90-10-01-CN is a standard configuration without armor. For applications involving high lateral loads or abrasive media, consider an armored version. AutoDCSTech stocks this exact model and can assist with lifecycle status and availability before ordering.

Troubleshooting and Common Issues

If the probe output is erratic or out of range, first verify the gap voltage setting. The linear range begins at approximately 0.25 mm (10 mils) from the target. Check that the probe tip is not physically damaged and that the connector is fully seated. For noise issues, ensure the field wiring shield is properly grounded at one end only. If the probe has been exposed to temperatures below -34°C (-30°F), inspect the pressure seal for leakage. For persistent problems, consult the Bently Nevada documentation or contact AutoDCSTech for technical support.