Bently Nevada 330104-00-08-90-02-05 3300 XL 8 mm Proximity Probe for Reliable Vibration Monitoring

Product Overview

When vibration or position monitoring is critical for rotating machinery, the Bently Nevada 330104-00-08-90-02-05 delivers precise, non-contact measurements. This 3300 XL 8 mm proximity probe is built for demanding applications like turbines, compressors, and pumps. With a 9.0-meter cable and miniature coaxial ClickLoc connector, it simplifies installation while maintaining signal integrity. The probe features a polyphenylene sulfide (PPS) tip and AISI 303 or 304 stainless steel case, ensuring durability in harsh conditions. Approved for hazardous locations with CSA, ATEX, and IECEx certifications, it meets global safety standards.

Technical Specifications Breakdown

The 330104-00-08-90-02-05 offers key specs that matter for reliability. Its nominal probe DC resistance (RPROBE) from center conductor to outer conductor is 9.87 ± 0.50 Ω at 9.0 meters, ensuring consistent performance. The probe is designed to seal differential pressure between the tip and case using a Viton O-ring, preventing leakage in pressurized environments. For electrical operation, it requires -17.5 Vdc to -26 Vdc when installed with a non-incendive circuit per drawing 140979, with a maximum consumption of 12 mA. The output resistance is 50 Ω, and sensitivity is less than 2 mV change per volt change in input voltage, providing stable readings.

Industry Applications

This proximity probe excels in rotating machinery monitoring. Use it for radial vibration and thrust position measurements on steam turbines, gas turbines, and centrifugal compressors. The 8 mm probe size fits standard mounting configurations, while the armored M10 x 1 thread withstands mechanical stress. In oil and gas facilities, the ATEX and IECEx approvals allow installation in Zone 0 and Zone 2 hazardous areas. The probe's temperature range (e.g., T5 classification from -55°C to +40°C) supports diverse climates.

Installation & Setup Guidance

For optimal performance, gap the probe at 1.27 mm (50 mils) against an AISI 4140 steel target during calibration. Use only 3300 XL 8 mm components (probe, extension cable, and Proximitor sensor) to maintain system accuracy. The miniature coaxial ClickLoc connector simplifies cable attachment without special tools. Ensure the probe is threaded into a mounting block with M10 x 1 threads, and verify the O-ring seal is intact before pressurizing the housing. Follow installation drawing 140979 for non-incendive circuits or drawing 141092 for intrinsically safe barriers.

Maintenance & Reliability

Regular inspection of the probe tip and cable is recommended. Check the PPS tip for wear or contamination, as deposits can affect measurement accuracy. The stainless steel case resists corrosion, but verify the O-ring remains pliable to maintain the pressure seal. Environmental factors like temperature extremes (from -55°C to +232°C depending on T-class) should be monitored to ensure the probe operates within its specified range. Periodic testing of DC resistance confirms cable integrity.

Selection Guide & Purchasing Advice

Before ordering the 330104-00-08-90-02-05, confirm your system requires a 9.0-meter cable length and M10 x 1 thread. Ensure compatibility with your existing 3300 XL Proximitor sensor and extension cable. For hazardous area installations, verify the required agency approval (CSA, ATEX, or IECEx) matches your zone classification. Plcmatrix.com stocks this probe and can advise on availability and lead times. Contact our team to confirm lifecycle status and ensure the probe meets your application needs.