Bently Nevada 330851-02-000-060-50-00-05 3300 XL 25 mm Proximity Probe

Description

330851-02-000-060-50-00-05: 3300 XL 25 mm proximity probe with M30x2 metric thread (Option 02), 0.0 mm unthreaded length (Option 000), 60 mm overall case length (Option 060), 5.0 metres total length (Option 50), non-armored FluidLoc cable (Option 00), and multiple approvals (Option 05).

This metric threaded eddy-current sensor is part of the 3300 XL 25 mm Proximity Transducer System and measures large-target physical displacement on rotating machinery. Unlike English 1-1/2-12 thread variants (Option 01), this probe is configured with an M30x2 metric thread case for installation in metric threaded machinery ports. The 25 mm probe tip is double-sealed with both front and rear seals, working in tandem with the perfluoroalkoxyethylene (PFA) insulated FluidLoc coaxial cable to resist moisture, oil, and chemical intrusion. The 5.0-metre system length (Option 50) connects directly to a 5.0-metre Proximitor sensor, eliminating the requirement for an intermediate extension cable in standard installations.

Features

• Option 02 metric M30x2 thread case constructed from corrosion-resistant AISI 304 stainless steel.
• Option 000 fully threaded case with 0.0 mm unthreaded length for maximum thread engagement in shallow or deep ports.
• Option 060 overall case length of 60 mm to facilitate optimal positioning of the probe tip.
• Option 50 total system length (5.0 metres) of perfluoroalkoxyethylene (PFA) insulated triaxial FluidLoc coaxial cable.
• Option 00 non-armored cable configuration with standard FluidLoc seal to block moisture ingress.
• Option 05 multiple approvals package covering hazardous area certifications from ATEX, IECEx, and CSA.
• ClickLoc miniature coaxial connectors with gold-plated brass and gold-plated beryllium copper contacts.
• Interchangeable removable nut design on the ClickLoc connector simplifies routing through tight conduit and clearances.

Applications

Typical applications include differential expansion (DE) measurements on mid-size to large steam turbine generators, rotor axial position monitoring, thrust position tracking, large shaft target displacement analysis, and industrial machinery protection in hazardous power generation and petrochemical environments.

Ordering Information

Technical Specifications

Installation Guidelines

Maintain a minimum bend radius of 25.4 mm (1.0 in) along all sections of the triaxial coaxial cable to prevent electrical degradation. Tighten the metric M30x2 probe case nuts to the recommended installation torque of 68 N-m (50 ft-lb), not exceeding the maximum rated limit of 163 N-m (120 ft-lb). Secure the standard locknut using safety wire through the predrilled safety holes to mitigate loosening under heavy mechanical vibration. Always route the probe leads through dedicated conduits and avoid parallel proximity to high-voltage AC cabling to avoid electromagnetic noise. Apply the supplied fluorosilicone connector protectors during final assembly to shield the ClickLoc connections from process fluids, oil, and humidity.

Compliance and Certifications