Product Overview: Bently Nevada 330709-000-060-50-12-05 3300 XL 11 mm Proximity Probe
When critical rotating machinery demands precise vibration monitoring, the Bently Nevada 330709-000-060-50-12-05 3300 XL 11 mm Proximity Probes deliver reliable measurement. This probe is part of the proven 3300 XL series, designed for permanent installation on turbines, compressors, and pumps. The 330709-000-060-50-12-05 features a 5.0-meter (16.4 feet) total length, M16 x 1.5 thread, and a miniature coaxial ClickLoc connector with FluidLoc cable for harsh environments. It provides accurate shaft displacement and vibration data essential for predictive maintenance and machine protection.
Technical Specifications Breakdown
Every technical parameter of the Bently Nevada 330709-000-060-50-12-05 is engineered for industrial reliability. The probe length is 5.0 meters, which requires a matching 5-meter Proximitor sensor. The DC resistance from center to outer conductor is 7.2 ± 0.8 ohms. Crosstalk limitations specify a minimum target flat surface diameter of 30.5 mm (1.2 in) and a minimum shaft diameter of 152 mm (6.0 in). Probe tip material is polyphenylene sulfide (PPS), and the case is AISI 304 stainless steel. The cable specification is 75 ohm triaxial, FEP insulated. Recommended probe case torque for M16x1.5 is 21.1 N·m (187 in·lb), with a maximum of 63.3 N·m (560 in·lb). Connector-to-connector torque is finger tight, max 0.565 N·m (5 in·lb). Minimum bend radius is 25.4 mm (1.0 in). Operating temperature range is -52°C to +177°C, with a note that exposures below -34°C may cause premature pressure seal failure. Temperature classification schedules are provided for various ambient conditions.
Installation & Setup Guidance
Proper installation of the Bently Nevada 330709-000-060-50-12-05 ensures accurate measurement. The probe uses a M16x1.5 thread with a maximum engagement length of 24 mm. Apply the recommended torque of 21.1 N·m (187 in·lb) for the case; avoid exceeding 63.3 N·m. The probe cable has a minimum bend radius of 25.4 mm (1.0 in), so route cables carefully to prevent kinking. The ClickLoc connector requires only finger-tight torque (max 0.565 N·m). Ensure the target flat surface is at least 30.5 mm in diameter and the shaft diameter is at least 152 mm to avoid cross-talk. For five-meter probe configurations, pair exclusively with a five-meter Proximitor sensor. This probe is not designed for armored installations (unthreaded length 0 mm).
Maintenance & Reliability
Routine inspection of the Bently Nevada 330709-000-060-50-12-05 involves checking the probe cable for wear, verifying connector integrity, and ensuring the probe tip is clean and free of debris. The PPS tip and stainless steel case resist corrosion, but environmental temperatures should remain within the -52°C to +177°C range. Avoid prolonged exposure below -34°C to preserve the pressure seal. Regularly verify the DC resistance between center and outer conductor: 7.2 ± 0.8 ohms. Any deviation may indicate cable damage. For maximum reliability, follow the temperature schedule for the appropriate EPL classification (Ga, Gc, Dc). Proactive maintenance extends service life and reduces unplanned downtime.
Compatibility & Integration
The Bently Nevada 330709-000-060-50-12-05 is designed for use with Bently Nevada 3300 XL series Proximitor sensors and monitoring systems. The five-meter probe length specifically requires a five-meter Proximitor sensor to maintain signal integrity. It integrates seamlessly with Bently Nevada rack-based condition monitoring platforms (e.g., 3500, 3701) and other compatible vibration monitoring systems. The miniature coaxial ClickLoc connector ensures reliable connection. For retrofitting older installations, verify that existing cabling and connectors match the 75 ohm triaxial specification. The probe's M16x1.5 thread fits standard mounting hardware used in many industrial applications.
Selection Guide & Purchasing Advice
When selecting the Bently Nevada 330709-000-060-50-12-05, confirm your system's Proximitor sensor length matches the 5.0-meter probe. Verify the mounting thread type (M16x1.5) and ensure adequate clearance for the cable bend radius. For high-temperature environments, review the temperature classification table to ensure compatibility. UBEST Automation (ubest101) stocks genuine Bently Nevada probes with full traceability. Contact our technical team for assistance with compatibility or to discuss replacement of older probe models. Choose the 330709-000-060-50-12-05 for reliable, long-term vibration monitoring in critical rotating machinery.