Bently Nevada 330881-28-06-155-00-02 PROXPAC XL Proximity Transducer

Description

Option 28 (3300 XL 8 mm probe with Multiple Approvals), Option 06 (60 mm standoff), and Option 155 (155 mm penetration) specify this metric PROXPAC XL integrated transducer configuration — 330881-28-06-155-00-02.

This integrated design houses a 3300 XL 8 mm proximity probe and its matching 3300 XL Proximitor sensor directly in the same Polyphenylene Sulfide (PPS) molded housing cover. By combining these elements, the assembly eliminates the need for an extension cable between the probe and Proximitor sensor, as well as a separate remote Proximitor enclosure, which simplifies field installation and reduces wiring complexity. The housing is molded from thermoplastic with glass and conductive fibers to strengthen the outer assembly and dissipate electrostatic charges in industrial environments.

Features

• Option 28 integration pairs the 3300 XL 8 mm probe with multiple hazardous area approvals inside the assembly.
• Option 06 standoff adapter provides a 60 mm standoff dimension for external transducer adjustments.
• Option 155 probe penetration length provides a 155 mm metric sleeve length to bridge the machine case to target shaft.
• Option 00 fittings option supplies two blanking plugs and two washers without external conduit fittings.
• Option 02 mounting thread specifies a 3/4-14 NPT connection for the sleeve assembly.
• Polyphenylene Sulfide (PPS) thermoplastic housing cover protects against severe atmospheric environments.
• Rated for IP66 and Type 4X environments to prevent humidity and moisture ingress when properly sealed.

Applications

This integrated proximity transducer assembly is used for shaft vibration and axial position measurement on rotating machinery where space or routing prevents remote Proximitor placement. Typical industries include oil and gas, power generation, and petrochemicals. It mounts on machinery such as:

• Steam and gas turbines
• Centrifugal and axial compressors
• Industrial gearboxes
• Generators and large electric pumps

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Ensure target shaft diameter is a minimum of 76.2 mm (3.0 in) to maintain standard scale calibration.
• Adjust physical gap using the threaded sleeve until the nominal output matches 1.27 mm (50 mils) physical gap.
• Use recommended field wiring consisting of 3-conductor shielded triaxial or twisted-pair cable, size 0.2 to 1.5 mm2 (16 to 24 AWG).
• Ensure the sleeve retaining nut is torqued to 29.5 N-m and the probe sleeve locknut is torqued to 39.3 N-m to maintain sealing.
• Seal the conduit paths to prevent moisture from traveling through the conduit and settling in the plastic housing cover.

Compliance and Certifications

• CE Mark compliant
• BASEEFA certified IP66 ingress protection rating for the housing assembly
• Hazardous Area Approvals: Class I, Zone 0, Ex ia IIC T4/T5 Ga intrinsically safe when wired with barriers
• Hazardous Area Approvals: Class I, Zone 2, Ex nA/Ex ec IIC T4/T5 Gc non-sparking/increased safety for Division 2 areas