Bently Nevada 330881-28-04-85-03-02 PROXPAC XL Proximity Transducer

Description

330881-28-04-85-03-02: PROXPAC XL metric proximity transducer assembly, featuring a 3300 XL 8 mm probe with multiple approvals (Option 28), a 40 mm standoff adapter (Option 04), an 85 mm probe penetration length (Option 85), one M20 cable fitting and two plugs (Option 03), and a 3/4-14 NPT mounting thread (Option 02).

The PROXPAC XL combines a proximity probe and a 3300 XL Proximitor sensor into a single integrated assembly, eliminating the need for separate extension cables or remote Proximitor housings. The housing body is manufactured from glass-reinforced, conductive-fiber-filled polyphenylene sulfide (PPS) thermoplastic, which offers Type 4X and IP66 protection against harsh industrial environments. Field wiring connects directly to terminal blocks inside the housing, simplifying installation and maintenance on rotating machinery.

Features

• 3300 XL 8 mm proximity probe with multiple hazardous area approvals (Option 28).
• 40 mm standoff adapter length (Option 04) for offset mechanical mounting.
• 85 mm probe penetration depth (Option 85) to reach internal target areas.
• Supplied kit includes one M20 conduit fitting and two plugs (Option 03).
• 3/4-14 NPT mounting thread (Option 02) designed for use with standoff adapters.
• Self-contained system eliminates the need for separate probe-to-Proximitor extension cabling.
• Polyphenylene sulfide (PPS) thermoplastic housing rated for IP66 and Type 4X environments.
• Field wiring terminal block inside the housing allows direct connection to the monitor.

Applications

• Axial shaft position and radial shaft vibration monitoring on critical rotating machinery.
• Non-contacting displacement measurement on steam turbines, gas turbines, compressors, pumps, and fans.
• Hazardous area machinery protection requiring explosion-proof or intrinsically safe sensor installation.
• Severe-environment machinery monitoring where moisture, chemical exposure, or electrostatic discharge is present.

Ordering Information

Technical Specifications

Installation Guidelines

• Grounding: The grounding liner inside the housing provides a path to discharge static charges. Ensure the housing is properly grounded through the mounting structure or dedicated earth connection.
• Sealing: Use the neoprene O-ring provided between the sleeve and the housing. Apply appropriate thread sealant on the mounting threads to prevent moisture ingress.
• Conduit Connections: Route field wiring through the M20 fitting provided. Seal unused conduit entries with the supplied blanking plugs to maintain the IP66 environmental rating.
• Proximity Gap: Set the nominal gap between the probe tip and the shaft target at 1.27 mm (50 mils) to achieve centered operation in the 2.0 mm linear range.

Compliance and Certifications

• Electrical Classification: Complies with the European CE mark
• Environmental Protection: Housing IP66 rating (verified by BASEEFA report)
• Hazardous Area Approvals: Multiple Approvals (Option 28) covering North American (CSA), European (ATEX), and International (IECEx) standards for Zone 0, Zone 1, Zone 2, Class I Division 1, and Class I Division 2 hazardous environments.