Bently Nevada 330881-28-15-122-03-02 PROXPAC XL Proximity Transducer

Description

Option 28 (multiple approvals 3300 XL 8 mm probe) and Option 15 (150 mm metric standoff adapter) specify this PROXPAC XL integrated proximity transducer configuration — 330881-28-15-122-03-02. Unlike generic proximity setups requiring separate housings and extension cables, this unit houses a 3300 XL Proximitor sensor directly in its cover. This self-contained design allows direct field wiring from the monitoring system to the transducer, simplifying installation and eliminating potential point-of-failure cable connections in demanding environments.

The 330881-28-15-122-03-02 features a robust housing molded from glass-reinforced and conductive-fiber Polyphenylene Sulfide (PPS) thermoplastic. This material provides structural strength and static dissipation, replacing traditional heavy steel and aluminum enclosures. Engineered for harsh industrial machinery, the assembly achieves Type 4X and IP66 protection, resisting corrosion, hot water, and condensing steam while housing the 3300 XL 8 mm probe and Proximitor in a single adjustable unit.

Features

• Integration: Combines a 3300 XL 8 mm probe and Proximitor sensor within a single, self-contained IP66 and Type 4X housing.
• Probe and Approvals Option: Includes a 3300 XL 8 mm proximity probe with multiple hazardous area approvals (Option 28).
• Standoff Adapter: Configured with a 150 mm standoff adapter length (Option 15).
• Probe Penetration: Features a 122 mm probe penetration length (Option 122).
• Conduit Fittings: Equipped with one M20 conduit fitting and two blanking plugs (Option 03).
• Mounting Thread: Utilizes 3/4-14 NPT mounting threads, required for standoff adapter compatibility (Option 02).
• Direct Field Wiring: No extension cable needed; field wiring links directly to the integrated Proximitor sensor.
• Advanced PPS Housing: Glass-reinforced thermoplastic construction resists environmental degradation and dissipates electrostatic charges.

Applications

This integrated proximity transducer is suitable for machinery protection and condition monitoring in critical industrial settings. Typical uses include:

• Shaft vibration and axial position measurement on large rotating machinery.
• Turbine, compressor, and pump shaft motion monitoring.
• Environments with space constraints where separate Proximitor housings cannot be installed.
• Locations where elimination of intermediate extension cables reduces risk of cable damage or signal loss.

Ordering Information

Technical Specifications

Installation Guidelines

To ensure proper mechanical fit and performance of the integrated transducer system, follow these practices:

• Mounting Alignment: Ensure the 3/4-14 NPT thread is clean and undamaged. The standoff adapter must be tight to prevent machine case leakage.
• Conduit Routing: Connect flexible or rigid conduit to the M20 fitting (Option 03) to prevent moisture ingress. If moisture is present in the conduit run, seal the entry point using conduit compound.
• Grounding: Ensure the housing grounding liner and retaining plate are clean and have a low-resistance path to machine ground to minimize electrostatic charge accumulation.
• Probe Clearance: To avoid side-view or rear-view effects, maintain adequate machine case counterbore clearance. A minimum target size of 15.2 mm is required for calibrated output.

Compliance and Certifications

• CE Mark: Complies with European Community EMC Directive 2014/30/EU and RoHS Directive 2011/65/EU.
• Hazardous Area Approvals: Intrinsically safe (Ex ia IIC T4/T5 Ga) and non-incendive/non-sparking (Ex nA/Ex ec IIC T4/T5 Gc) certifications (Option 28).
• Enclosure Protection: IP66 and NEMA Type 4X certified housing.