Bently Nevada 330101-33-53-10-12-CN 3300 XL 8 mm Probe

Product Overview

The 330101-33-53-10-12-CN is a 3300 XL 8 mm probe from Bently Nevada, featuring a 3/8-24 UNF thread and designed without armor. It is manufactured in the U.S.A. and incorporates patented TipLoc and CableLoc technologies for enhanced durability. The probe provides a stronger bond between tip and body, and its cable offers 330 N (75 lbf) pull strength. The optional FluidLoc cable prevents oil leakage through the cable interior, making it suitable for lubricated environments.

Technical Specifications Breakdown

Key parameters for the 330101-33-53-10-12-CN are listed below for quick reference:

Industry Applications

Turbine and Compressor Monitoring

In steam turbines and centrifugal compressors, radial vibration measurements are critical. The 330101-33-53-10-12-CN provides a linear range of 2 mm (80 mils) and an ISF of 7.87 V/mm, enabling precise detection of shaft displacement. Its robust stainless steel case withstands harsh conditions, while the FluidLoc cable option prevents oil leaks in lubricated systems.

Pump and Motor Protection

For large pumps and electric motors, early fault detection reduces unplanned downtime. The probe's TipLoc molding ensures a reliable bond even under vibration, and the 330 N pull strength of the CableLoc design adds mechanical security. The recommended gap setting of -9 Vdc (approximately 1.27 mm) simplifies installation for radial vibration monitoring.

Gearbox Health Assessment

Gearboxes often operate in high-temperature environments. The standard probe temperature range of -52°C to +177°C covers most industrial gearbox conditions. The deviation from best fit straight line (DSL) for standard 5 or 1 meter systems is less than ±0.025 mm (±1 mil), ensuring accurate data for trend analysis.

Installation and Setup Guidance

When installing the 330101-33-53-10-12-CN, ensure the probe tip is properly positioned within the linear range. The recommended gap setting for radial vibration is -9 Vdc, corresponding to approximately 1.27 mm (50 mils). Use field wiring of 0.2 to 1.5 mm² (16 to 24 AWG), preferably 3-conductor shielded triad cable. Maximum field wiring length between the Proximitor Sensor and monitor is 305 meters (1,000 feet). For optimal frequency response, refer to the frequency response graphs for signal rolloff at high frequencies with longer wiring.

Maintenance and Reliability

Periodic inspection of the probe and cable is recommended to ensure physical integrity. The probe's PPS tip and stainless steel case resist corrosion and wear. The FluidLoc cable option helps prevent oil ingress, but regular checks for cable damage or connector looseness are advisable. The probe is designed to seal differential pressure between tip and case using a Viton O-ring, though it is not pressure tested before shipment. For applications requiring pressure seal verification, contact the custom design department.

Industry Evolution and the Need for Precision

Over the past decades, industrial machinery has grown more complex and demanding. Vibration monitoring has shifted from a reactive maintenance tool to a proactive reliability strategy. The Bently Nevada 330101-33-53-10-12-CN 3300 XL 8 mm probe represents this evolution, offering engineers a robust, accurate sensor for critical asset protection.

Compatibility and Integration

The 330101-33-53-10-12-CN is part of the 3300 XL series and is compatible with Bently Nevada Proximitor sensors and monitoring systems. The miniature coaxial ClickLoc connector ensures secure, quick connections. The probe's standard ISF of 7.87 V/mm (200 mV/mil) allows interchangeability with other 3300 XL 8 mm probes within the specified tolerance.

Selection Guide and Purchasing Advice

When selecting the 330101-33-53-10-12-CN, consider the specific thread requirement (3/8-24 UNF) and the absence of armor. The total length of 1.0 metre (3.3 feet) suits many standard installations. For applications requiring oil leakage prevention, choose the FluidLoc cable option. AutoDCSTech offers this probe with country-specific approvals (CN). Please verify current lifecycle status and availability with AutoDCSTech before ordering.