Bently Nevada 330881-BR-04-034-06-02 PROXPAC XL Proximity Transducer

Description

Option BR specifies INMETRO (Brazilian) approvals and a 3300 XL 8 mm probe configuration for this metric PROXPAC XL integrated transducer assembly — 330881-BR-04-034-06-02. This configuration integrates a metric PROXPAC XL housing, a 40 mm standoff adapter (Option 04), and a custom 34 mm probe penetration length (Option 034). The assembly features a heavy-duty sealing kit under Option 06, which provides one 3/4-14 NPT fitting, one 3/4-14 NPT to 1-1/2-14 NPT stainless steel reducer, and two plugs. The entire unit is designed to mount via a 3/4-14 NPT thread (Option 02).

By housing both a 1-metre 3300 XL 8 mm proximity probe and a 3300 XL Proximitor sensor within a single self-contained housing, the 330881-BR-04-034-06-02 eliminates the need for external extension cables and standalone Proximitor housings. This design directly reduces connection points, minimizes signal degradation, and simplifies wiring layouts by bringing field connections directly to the monitor. The housing is constructed from Polyphenylene Sulfide (PPS) molded thermoplastic reinforced with glass and conductive fibers, which provides Type 4X and IP66 environmental protection while safely dissipating electrostatic charges.

Features

• Option BR: Features an integrated 3300 XL 8 mm proximity probe certified with INMETRO (Brazilian) hazardous area approvals.
• Option 04: Features a metric standoff adapter with a specific length of 40 mm.
• Option 034: Configured with a precise 34 mm probe penetration length.
• Option 06: Includes one 3/4-14 NPT fitting, one 3/4-14 NPT to 1-1/2-14 NPT stainless steel reducer, and two plugs to secure the conduit interface.
• Option 02: Standard 3/4-14 NPT mounting thread configuration, required to support standoff adapter options.
• Conductive PPS Housing: Thermoplastic material design provides defense against corrosive chemical environments and dissipates static charges.
• Integrated Architecture: Built-in Proximitor sensor eliminates the traditional probe-to-sensor extension cable for a more direct signal path.
• Type 4X and IP66 Enclosure: Rated for direct hose-directed water exposure and harsh industrial locations.

Applications

• Dynamic shaft vibration monitoring on critical rotating machinery
• Rotor axial position and thrust movement measurement
• Reciprocating compressor piston rod position and rod runout wear monitoring
• Shaft radial displacement and casing thermal expansion detection
• Applications in petrochemical, refining, and power generation facilities requiring INMETRO hazardous area certifications

Ordering Information

Technical Specifications

Installation Guidelines

Adhering to these guidelines helps prevent common installation issues and maintains system integrity:

• Verify that the 3/4-14 NPT mounting threads are free of debris and properly matched before threading the standoff adapter into the machine casing.
• Ensure the 8 mm probe tip maintains the recommended 1.27 mm (50 mils) gap to the target shaft for optimal linear range response.
• Route field wiring directly through the Option 06 fittings into the housing terminal block, securing the lid and lid screws to protect the internal Proximitor sensor from moisture and dust.
• Confirm that the PPS housing's conductive fibers are grounded to allow effective dissipation of static electricity.

Compliance and Certifications

• INMETRO Certifications: Intrinsically Safe (Ex ia IIC T4/T5 Ga) and Non-sparking/Increased safety (Ex nA/Ex ec IIC T4/T5 Gc) under Option BR.
• EMC Directive: EN 61000-6-2 (Immunity) and EN 61000-6-4 (Emissions)
• RoHS Directive: Compliant with European Union Directive 2011/65/EU
• Maritime Standards: Certified under major classification rules where applicable