Bently Nevada 330881-BR-04-150-06-02 PROXPAC XL Proximity Transducer

Description

Option BR specifies an integrated 3300 XL 8 mm proximity probe with INMETRO (Brazil) hazardous area approvals in this metric configuration of the Bently Nevada 330881-BR-04-150-06-02 PROXPAC XL Proximity Transducer. It combines a proximity probe and a Proximitor sensor into a single self-contained housing, removing the requirement for an external extension cable between the probe and Proximitor sensor, as well as the need for a separate Proximitor junction enclosure. The direct field-wiring connection streamlines installation on rotating machinery and reduces overall loop complexity.

The housing is constructed from glass-reinforced polyphenylene sulfide (PPS), a tough thermoplastic engineered to dissipate electrostatic charges and resist corrosive environmental exposure. Rated for Type 4X and IP66, this assembly ensures ingress protection in severe industrial environments. This specific configuration includes a 40 mm standoff adapter and a 150 mm probe penetration sleeve with a 3/4-14 NPT mounting thread and a robust NPT fittings kit for conduit routing.

Features

• Integrated design embeds a 3300 XL Proximitor sensor directly into the housing lid to eliminate extension cables and junction boxes.
• Option BR provides INMETRO approvals for safe deployment in Brazilian hazardous areas.
• PPS thermoplastic housing is reinforced with glass and conductive fibers for electrostatic dissipation and mechanical strength.
• Environmental protection rated at Type 4X and IP66 for demanding plant locations.
• Sleeve and standoff design allows convenient external adjustment and access to the proximity probe without dismantling the machine casing.
• Double NPT conduit entry fittings with stainless steel reducers for robust mechanical conduit connection.

Applications

Common industrial installations include shaft vibration and axial position measurements on rotating machinery such as steam turbines, gas turbines, centrifugal compressors, gearboxes, pumps, and fans. The unified construction is especially effective in locations where traditional proximity system installation space is limited or where minimizing external cabling is desired to improve mechanical protection.

Ordering Information

Technical Specifications

Installation Guidelines

The transducer assembly must be mounted on a flat surface using the 3/4-14 NPT mounting thread (Option 02) which handles the physical engagement of the 40 mm standoff adapter. To avoid cross-talk, ensure the probe tips maintain a separation distance of at least 40 mm for axial position measurements and 38 mm for radial vibration measurements. Connect the field wiring using a 3-conductor twisted shielded cable with a drain wire (typically 1.0 mm2 or 18 AWG) between the internal terminal board and the associated monitor system. Shield grounding must be terminated at the monitor end, ensuring the shield remains isolated at the housing to prevent ground loops.

Compliance and Certifications

The unit complies with the European CE mark requirements, EMC Directive 2014/30/EU, and RoHS Directive 2011/65/EU. Additionally, the housing IP66 rating is verified by BASEEFA, and the Option BR configuration satisfies INMETRO hazardous area standards for intrinsic safety and non-incendive installations in Brazil.