330171-00-20-90-02-00 Bently Nevada 5mm Probe 9.0m

Problem: Unreliable Shaft Vibration Data in Turbomachinery

Inaccurate radial vibration readings lead to false trips and missed faults. The Bently Nevada 330171-00-20-90-02-00 solves this with a 5mm probe, 1/4-28 UNF thread, and 9.0m cable. This probe delivers engineering-grade precision for API 670 protection systems.

Solution: 330171-00-20-90-02-00 Electrical and Mechanical Specifications

This probe operates with a -24 Vdc supply and draws 12 mA maximum. Output resistance is 50 Ω. The probe DC resistance at 9.0m is 9.87 ± 0.90 Ω. Sensitivity is less than 2 mV change per volt input change. The probe tip is PPS, and the case is AISI 304 stainless steel. Weight is 0.323 kg. The miniature coaxial ClickLoc connector ensures a secure, low-noise connection.

Problem: Thread Engagement and Mounting Errors

Incorrect thread depth causes probe damage or loose mounting. The 330171-00-20-90-02-00 has a 1/4-28 thread with a maximum engagement of 0.375 in. When drilling and tapping, use a #3 or larger tap drill. Recommended probe case torque is 5.1 N·m (45 in·lb), maximum 7.3 N·m (65 in·lb). This prevents over-torque and ensures repeatable gap settings.

Solution: Environmental and Installation Guidelines

The probe temperature range is -35°C to +177°C. Exposing the probe below -34°C may cause premature pressure seal failure. Minimum cable bend radius is 25.4 mm (1.0 in). The 75 Ω triaxial FEP cable resists harsh chemicals. For 60 Hz magnetic fields up to 300 Gauss, the probe output is 0.0014 mil pp/gauss at 50 mil gap, minimizing interference.

Problem: Integration with Legacy Systems

Replacing obsolete probes requires exact electrical matching. The 330171-00-20-90-02-00 is compatible with Bently Nevada 3300 XL Proximitor sensors. The 9.0m total length matches standard 5-meter and 9-meter system configurations. The ClickLoc connector eliminates field wiring errors. Always verify linear range: operation above -23.5 Vdc reduces linear range.

Solution: Verified Performance and Support

Each probe undergoes factory verification. The 330171-00-20-90-02-00 is in stock and ready to ship from AutoDCSTech. Contact AutoDCSTech with your exact requirements for precise matching. Our specialist engineering support ensures you receive the correct probe for your application.