Bently Nevada 330881-28-11-265-00-02 PROXPAC XL Proximity Transducer

Description

Option 28 (3300 XL 8 mm probe with Multiple Approvals), Option 11 (110 mm standoff adapter), and Option 265 (265 mm probe penetration) specify this metric integrated transducer configuration — 330881-28-11-265-00-02. This PROXPAC XL Proximity Transducer serves as a self-contained eddy-current measurement system, integrating both the proximity probe and the Proximitor sensor within a single durable housing.

Unlike standard non-integrated proximity probe systems, this configuration eliminates the requirement for an extension cable and a separate remote sensor enclosure. It simplifies installation by routing field wiring directly from the monitor to the local PPS housing. The integrated 3300 XL 8 mm probe is protected inside an adjustable sleeve with a 265 mm penetration length, supported by a 110 mm standoff adapter, and mounts securely via a 3/4-14 NPT mounting thread.

Features

• Option 28 integration of a 3300 XL 8 mm proximity probe featuring hazardous area multiple approvals.
• Option 11 provides a 110 mm metric standoff adapter to position the housing away from the machine case.
• Option 265 specifies a 265 mm probe penetration length for exact deep-reach positioning.
• Option 00 includes no conduit fittings, supplying instead two blanking plugs and two sealing washers.
• Option 02 provides a 3/4-14 NPT mounting thread interface.
• Glass and conductive fiber-reinforced Polyphenylene Sulfide (PPS) housing material protects internal electronics and dissipates electrostatic charges.
• Direct terminal connection design removes the need for probe-to-sensor extension cables.
• Type 4X and IP66 rated enclosure seals against severe industrial environments.

Applications

This integrated transducer assembly is used in industrial rotating machinery protection environments where standard split-component proximity systems present wiring or routing difficulties. Typical applications include:

• Radial vibration and axial position measurement on industrial turbines, compressors, and pumps.
• Casing-mounted non-contact displacement monitoring.
• Harsh environments demanding Type 4X and IP66 direct-exposure chemical and moisture resistance.
• Installations where reducing the quantity of components, enclosures, and intermediate cables is required.

Ordering Information

Technical Specifications

Installation Guidelines

To ensure proper installation of the PROXPAC XL assembly, observe the following engineering recommendations:

• Gap Setting: Standard recommended target gap is 1.27 mm (50 mils), which corresponds to the midpoint of the linear calibration range.
• Sleeve Support: When the sum of Dimension B (standoff) and Dimension C (penetration) exceeds 305 mm (12.0 in), apply an additional sleeve support near the probe to stiffen the assembly and avoid resonant vibrations.
• Torque Limits: Tighten the housing retaining nut to 29.5 N-m (260 in-lb) and the probe sleeve locknut to 39.3 N-m (350 in-lb).
• Field Wiring: Use 3-conductor shielded twisted-pair (16 to 24 AWG) field wire for runs up to 305 meters (1000 feet) between the transducer and the monitoring system. Keep the shield isolated until reaching the monitoring rack common ground.

Compliance and Certifications

The integrated components inside the assembly comply with the following safety and electrical standards:

• EMC Standards: EN 61000-6-2 (Immunity for Industrial Environments) and EN 61000-6-4 (Emissions for Industrial Environments).
• Enclosure Rating: IP66 and NEMA Type 4X verified rating for moisture and hose-directed water resistance.
• Hazardous Area Approvals (Option 28): Certified for intrinsically safe (Ex ia IIC T4/T5 Ga) and non-sparking/increased safety (Ex nA/ec IIC T4/T5 Gc) applications when installed with appropriate barriers or isolators.