Bently Nevada 330881-28-05-070-00-02 PROXPAC XL Proximity Transducer

Description

330881-28-05-070-00-02: PROXPAC XL Proximity Transducer assembly featuring a metric housing equipped with a 3300 XL 8 mm proximity probe (Multiple Approvals), a 50 mm standoff adapter, 70 mm probe penetration, standard plugs and washers, and 3/4-14 NPT mounting thread.

This integrated configuration consolidates a 3300 XL 8 mm probe and a 3300 XL Proximitor sensor directly within a single glass-reinforced polyphenylene sulfide (PPS) thermoplastic housing. By eliminating the necessity for a separate extension cable and isolated Proximitor housing, this setup facilitates direct connection between the machinery monitors and the transducer assembly, simplifying the electrical wiring topology.

Features

• Metric housing design constructed of molded glass-reinforced polyphenylene sulfide (PPS) thermoplastic with conductive fibers for electrostatic dissipation.
• Option 28 integration featuring a 3300 XL 8 mm proximity probe with multiple hazardous area approvals.
• Option 05 providing a 50 mm standoff adapter (B dimension) for local standoff installation.
• Option 070 specifying a 70 mm probe penetration length (C dimension) into the machine housing.
• Option 00 fittings option supplying a kit of two conduit port plugs and two washers without extra fittings.
• Option 02 mounting thread option supplying a 3/4-14 NPT outer sleeve assembly thread.
• Direct proximity probe and sensor integration to eliminate intermediate extension cables.
• Environmental protection rating of IP66 and NEMA Type 4X for high-exposure environments.

Applications

• Radial shaft vibration monitoring on rotating machines such as utility turbines, compressors, and large industrial pumps.
• Axial shaft position measurement for steam and gas turbine packages.
• Industrial machinery protection where a self-contained local transducer housing is required to reduce external cabling.
• Severe industrial environments requiring protection against corrosive chemical contact, hot water, or steam.

Ordering Information

Technical Specifications

Installation Guidelines

• Torque Limits: Tighten the retaining nut to 29.5 N-m (260 in-lb) and the probe sleeve locknut to 39.3 N-m (350 in-lb) to maintain secure position and sealing.
• Gap Setting: Calibrate the probe to the midpoint of the linear range at 1.27 mm (50 mils) using a digital voltmeter measuring the DC voltage output.
• Conduit Connection: When using flexible conduit, order with integral fittings; seal any unused conduit holes using the supplied blanking plugs.
• Environmental Sealing: Check the Neoprene sleeve O-ring and Viton internal probe O-ring during assembly to prevent ingress of oil or moisture.

Compliance and Certifications

• ATEX/IECEx: Ex ia IIC T4/T5 Ga, Ex ia IIIC T90C/T105C Dc for explosive gas and dust atmospheres (Option 28).
• North American (CSA): Class I, Zone 0: AEx/Ex ia IIC T4/T5 Ga; Class I, Groups A, B, C, D; Class II, Groups E, F, G; Class III.
• Ingress Protection: IP66 housing rating verified by BASEEFA and NEMA Type 4X enclosure rating.
• CE Mark: Complies with applicable European Union directives for electromagnetic compatibility and hazardous environments.