Bently Nevada 330881-28-05-080-00-02 PROXPAC XL Proximity Transducer

Description

330881-28-05-080-00-02 specifies a metric PROXPAC XL integrated proximity transducer assembly, incorporating a 3300 XL 8 mm probe with Multiple Approvals, a 50 mm standoff adapter, and an 80 mm probe penetration sleeve. This design integrates both the proximity probe and its associated 3300 XL Proximitor sensor directly within the housing lid. By co-locating the sensor and probe, this self-contained system eliminates the need for intermediate extension cables and separate remote Proximitor housings, significantly simplifying field wiring and reducing installation footprint on rotating machinery.

The rugged housing is constructed from glass-reinforced, ultraviolet-resistant Polyphenylene Sulfide (PPS) thermoplastic embedded with conductive fibers to safely dissipate electrostatic charges. Providing Type 4X and IP66 ingress protection, this assembly is engineered to withstand harsh industrial environments. Unlike standard English-thread models, this metric-configured variant uses 3/4-14 NPT mounting threads (Option 02) to match standard metric process connections and supports a dual-plug, dual-washer configuration without conduit fittings (Option 00) for clean field integration.

Features

• Self-Contained Design: Built-in 3300 XL Proximitor sensor within the housing cover eliminates extension cables and remote junction enclosures.
• Rugged Material: Molded Polyphenylene Sulfide (PPS) body with conductive fibers protects against mechanical impacts and electrostatic discharge.
• Hazardous Area Certified: Option 28 probe and approvals provide comprehensive ATEX, IECEx, and North American hazardous location compliance.
• Metric Dimensions: Configured with a 50 mm standoff adapter and 80 mm probe penetration length for exact mechanical fit.
• NEMA 4X and IP66: High-integrity sealing protects internal transducer components from hose-directed water and highly corrosive environments.

Applications

The integrated transducer assembly is ideal for continuous vibration and position monitoring of machinery in severe service applications. Common installations include:

• Steam and gas turbine axial position and shaft vibration monitoring.
• Centrifugal compressor radial shaft displacement measurement.
• Heavy industrial pumps and gearbox shaft movement protection.
• Petrochemical, power generation, and water treatment facility rotating equipment.

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Sleeve Alignment: Position and secure the 12.7 mm diameter probe sleeve through the machine case, verifying proper axial or radial gap relative to the shaft.
• Torque Limits: Tighten the retaining nut to 29.5 N-m (260 in-lb) and the probe sleeve locknut to 39.3 N-m (350 in-lb) to maintain structural sealing.
• Conduit Sealing: Install sealing plugs in unused conduit entry holes. Ensure the housing is properly sealed to prevent condensation or process fluids from running along field conduit lines into the enclosure.
• Grounding: Connect the internal stainless steel grounding liner to local field ground to prevent noise interference.

Compliance and Certifications

• ATEX / IECEx: Ex ia IIC T4/T5 Ga; Ex ia IIIC T90C/T105C Dc. Ex nA IIC T4/T5 Gc; Ex ec IIC T4/T5 Gc.
• North American (cNRTLus): Class I, Zone 0: AEx/Ex ia IIC T4/T5 Ga; Class I, Groups A, B, C, D; Class II, Groups E, F, G; Class III. Class I, Zone 2: AEx/Ex nA IIC T5...T1 Gc; Class I, Division 2, Groups A, B, C, D.
• Ingress Protection: Rated IP66 (verified under BASEEFA report T07/0709) and Type 4X.
• CE Mark: Complies with European electromagnetic compatibility standards.