Bently Nevada 330851-02-000-050-50-00-05 3300 XL 25 mm Proximity Probe

Description

330851-02-000-050-50-00-05: 3300 XL 25 mm proximity probe featuring an M30x2 threaded metric case with 5.0 meters of integrated FluidLoc coaxial cable for non-contacting, large-target displacement measurement. This specific configuration is supplied with 0 mm unthreaded length, a 50 mm overall case length, no protective armor, and Multiple Approvals agency certification (Option 05) for hazardous industrial zones. It functions in the 3300 XL 25 mm Transducer System, converting mechanical position changes into proportional voltage signals.

Unlike configurations using smooth cases or unthreaded case options, this variant utilizes an M30x2 threaded body to secure the probe directly into threaded ports. The 5.0-meter system length allows direct connection to a panel- or DIN-rail-mounted Proximitor sensor without requiring an intermediary extension cable, minimizing connections in heavy-duty environments. The non-armored design provides flexibility for standard conduit routing, and the multiple approvals package includes ATEX, IECEx, and North American hazardous area certifications.

Features

• Option 02 specifies an M30x2 threaded metric case made of AISI 304 stainless steel.
• Option 000 designates 0 mm unthreaded length for maximum thread contact in standard mounting holes.
• Option 050 provides a 50 mm overall case length, ideal for standard industrial brackets.
• Option 50 provides a 5.0-meter integrated FluidLoc triaxial probe cable with perfluoroalkoxyethylene (PFA) insulation.
• Option 00 specifies a non-armored cable configuration for streamlined conduit installations.
• Option 05 offers multiple hazardous area agency approvals, including ATEX, IECEx, and North American certifications.
• Large-target capability measures up to 12.7 mm (500 mils) of linear displacement when used with a 3300 XL 25 mm Proximitor.
• PEEK (Polyetheretherketone) probe tip provides structural integrity and resistance to extreme temperatures.

Applications

• Steam turbine thrust position monitoring
• Large shaft axial displacement measurement
• Differential expansion (DE) monitoring on mid-to-large-size steam turbine generators
• Rod-drop monitoring in reciprocating compressors
• Non-contacting displacement measurements on rotating machines with large shaft diameters or targets

Ordering Information

Technical Specifications

Installation Guidelines

• Ensure the probe is mounted perpendicular to the target surface.
• Maintain a minimum recommended target size of 61 mm (2.4 in) diameter to prevent reduced linear range.
• Use the recommended installation torque of 68 N-m (50 ft-lb) for the M30x2 threaded metric body. Do not exceed 163 N-m (120 ft-lb).
• Protect cable connectors from environmental moisture and contaminants; using silicone self-fusing tape or connector protectors is highly recommended.
• Maintain a minimum bend radius of 25.4 mm (1.0 inch) for the triaxial FluidLoc coaxial cable.

Compliance and Certifications

• ATEX/IECEx: Ex ia IIC T5...T1 Ga, Ex ia IIIC T90 degC...T280 degC Dc, Ex nA IIC T5...T1 Gc, Ex ec IIC T5...T1 Gc
• CSA/cNRTLus: Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga; Class I, Groups A, B, C, and D, Class II, Groups E, F, and G, Class III; Class I, Zone 2: AEx/Ex nA IIC T5...T1 Gc; Class I, Division 2, Groups A, B, C, D
• CE Mark: Complies with European CE mark requirements for electromagnetic compatibility and safety.