Bently Nevada 330881-16-05-035-01-02 PROXPAC XL Proximity Transducer

Description

Bently Nevada 330881-16-05-035-01-02 specifies a metric PROXPAC XL integrated proximity transducer assembly configured with a 3300 XL 8 mm probe (without approvals), a 50 mm standoff adapter, a 35 mm probe penetration depth, one M25 cable conduit fitting (accompanied by two plugs), and a 3/4-14 NPT mounting thread. This specific integration combines both the non-contact eddy-current probe and the 3300 XL Proximitor sensor into a single Polyphenylene Sulfide (PPS) housing cover, completely eliminating the need for an extension cable and separate Proximitor housing. By routing field wiring directly from the monitor to the PROXPAC XL enclosure, installation footprint and connection failure points are significantly minimized.

The robust thermoplastic housing is glass and conductive fiber-reinforced PPS, providing excellent dissipation of electrostatic charges, structural strength, and Type 4X / IP66 environmental protection. This configuration utilizes a 1-meter 75 ohm triaxial, FEP-insulated cable with a gold-plated ClickLoc connector internally. It is designed to operate seamlessly under severe conditions, providing a direct connection to Bently Nevada 3300 XL machinery protection monitors for continuous shaft vibration, axial position, and speed monitoring on rotating machinery.

Features

• Option 16 integration includes a 3300 XL 8 mm proximity probe without hazardous area approvals for standard industrial environments.
• Option 05 provides a 50 mm standoff adapter length for precise probe positioning on machine casings.
• Option 035 specifies a 35 mm probe penetration length, adjustable within a narrow envelope to optimize target gapping.
• Option 01 fitting package includes one M25 conduit fitting and two plugs, ensuring a clean and secure direct field wire entrance.
• Option 02 mounting thread option provides a rugged 3/4-14 NPT thread, required for proper standoff adapter installation and casing attachment.
• Polyphenylene Sulfide (PPS) thermoplastic housing cover incorporates glass and conductive fibers to strengthen the assembly and dissipate electrostatic charges.
• Direct-to-monitor field wiring capability eliminates external extension cables, separate housings, and auxiliary connectors.
• IP66 and Type 4X ratings ensure protection against severe environments, moisture ingress, and corrosive atmospheres.

Applications

The integrated transducer design is ideal for fluid-film bearing machines where space is restricted, and a simplified wiring topology is required. Typical applications include:

• Radial vibration and axial position measurements on steam turbines, gas turbines, and industrial compressors.
• Shaft dynamic displacement monitoring on high-speed pumps and gearboxes.
• Casing-mounted non-contact proximity measurements where external Proximitor housing space is unavailable.
• Machinery protection systems requiring Type 4X / IP66 environmental enclosures.

Ordering Information

Technical Specifications

Installation Guidelines

For successful commissioning of the PROXPAC XL transducer system, follow these standard guidelines:

• Maintain a minimum spacing of 40 mm (1.6 in) between adjacent transducer tips for axial measurements, and 38 mm (1.5 in) for radial vibration measurements to restrict cross-talk to 50 mV or less.
• Avoid mounting on shafts with diameters less than 76.2 mm (3.0 in) without considering potential scale factor changes.
• Apply a torque of 29.5 N-m (260 in-lb) to the retaining nut, and 39.3 N-m (350 in-lb) to the probe sleeve locknut to ensure proper physical retention and mechanical seal.
• Ensure field conduit runs are properly sealed to prevent external moisture and condensation from traveling through the conduit piping into the PPS housing.

Compliance and Certifications

• CE Mark: Complies with European CE electromagnetic and industrial requirements.
• Housing IP66 Rating: Verified by BASEEFA report number T07/0709.
• Housing Mechanical Integrity: Certified by BASEEFA to withstand two separate 4 Joule impacts at -39 degC and +115 degC.