Bently Nevada 330881-28-05-060-00-02 PROXPAC XL Proximity Transducer

Description

Option 28 (3300 XL 8 mm probe with Multiple Approvals), Option 05 (50 mm standoff adapter length), and Option 060 (60 mm probe penetration length) specify this metric Bently Nevada 330881-28-05-060-00-02, an integrated PROXPAC XL Proximity Transducer. It provides direct, non-contact shaft vibration and axial position measurements by housing a 3300 XL Proximitor sensor inside the thermoplastic enclosure cover itself, eliminating the need for an external extension cable or separate sensor housing.

This specific configuration includes Option 00, indicating no additional conduit fittings (supplied with two plugs and two washers), and Option 02, specifying 3/4-14 NPT mounting threads required to support the 50 mm standoff adapter. The housing is molded from glass-reinforced, UV-resistant polyphenylene sulfide (PPS) thermoplastic with conductive fibers that maximize electrostatic charge dissipation. This combination of an integrated 8 mm proximity probe and localized Proximitor sensor simplifies field installations in areas demanding Type 4X and IP66 environmental protection.

Features

• Integrated Design: Houses a 3300 XL Proximitor sensor directly in the cover plate, removing the necessity of an extension cable.
• Metric Construction: Features a 330881 metric configuration matching international mounting standards.
• 3300 XL 8 mm Probe: Includes an integrated 8 mm proximity probe with multiple hazardous area approvals (Option 28).
• 50 mm Standoff: Includes an integrated 50 mm standoff adapter (Option 05) to accommodate specific installation spacing.
• 60 mm Penetration: Features a 60 mm probe penetration length (Option 060) to position the probe tip correctly relative to the target.
• Mounting Interface: Employs 3/4-14 NPT threads (Option 02) to securely couple the standoff adapter.
• No Fittings Kit: Ships with no conduit fittings (Option 00), supplied instead with two plugs and two washers.
• Advanced Housing Material: Molded from conductive fiber, glass-reinforced polyphenylene sulfide (PPS) to resist harsh chemicals and dissipate electrostatic charges.
• Severe Environment Protection: Housing assembly is rated for IP66 and Type 4X installations.

Applications

• Machinery protection systems monitoring steam and gas turbines, centrifugal compressors, pumps, fans, and generators.
• Locations requiring simplified sensor wiring without intermediate junction boxes or separate Proximitor enclosures.
• Severe industrial environments requiring chemically resistant housings in oil and gas, petrochemicals, and power generation.

Ordering Information

Technical Specifications

Installation Guidelines

Proper installation is required to maintain measurement stability and environmental sealing. Align the integrated proximity transducer assembly according to the following directives:

• Sleeve Locking: Tighten the probe sleeve locknut to a torque of 39.3 N-m (350 in-lb) to maintain physical stability.
• Housing Fastening: Secure the housing retaining nut to 29.5 N-m (260 in-lb) of torque. Verify that the grounding liner and retaining plate are properly aligned.
• Gap Calibration: Gap the probe tip at the midpoint of the linear range, typically 1.27 mm (50 mils) or approximately -10 Vdc output voltage.
• Conduit Integrity: When routing field cables, ensure the enclosure entry points are fully sealed. Take precautions to prevent moisture or condensation from traveling down the flexible conduit into the housing.
• Sleeve Support: Additional structural sleeve support is recommended for combined standoff and penetration lengths exceeding 305 mm (12.0 in) to prevent resonance-induced vibration.

Compliance and Certifications

The PROXPAC XL assembly is certified for use in industrial and hazardous environments with the following approvals:

• CE Mark: Complies with European Union electromagnetic compatibility and low voltage directives.
• Hazardous Area Classifications: Multiple Approvals (Option 28) certified under ATEX/IECEx and North American standards.
• ATEX/IECEx: Ex ia IIC T4/T5 Ga, Ex ia IIIC T90C/T105C Dc for intrinsically safe installations when paired with zener barriers or galvanic isolators.
• North American (CSA/CNRTL): 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: Rated IP66 (verified by BASEEFA) and Type 4X for high-pressure water spray and severe environments.