Bently Nevada 330881-28-04-080-03-02 PROXPAC XL Proximity Transducer

Description

Option 28 (3300 XL 8 mm probe with multiple approvals) and Option 04 (40 mm standoff adapter) define the specific physical profile of this metric 330881-28-04-080-03-02 integrated transducer assembly. By packaging both the 3300 XL 8 mm proximity probe and the Proximitor sensor into a single, self-contained protective housing, this configuration eliminates the requirement for an external extension cable and separate Proximitor junction box. The field wiring connects directly from the monitoring system to the integrated terminal strip inside the housing, greatly simplifying installation and reducing mechanical failure points.

The 330881-28-04-080-03-02 features a robust housing constructed of glass-reinforced polyphenylene sulfide (PPS) thermoplastic with integrated conductive fibers. This advanced material effectively dissipates electrostatic charges and delivers exceptional chemical resistance in severe operating environments. Rated for Type 4X and IP66 sealing, the housing defends internal electronics against dust, moisture, and low-pressure water jets, making it suitable for hazardous area deployment and critical rotating machinery protection.

Features

• Option 28 integrated 3300 XL 8 mm proximity probe pre-installed with multiple international safety certifications.
• Option 04 provides a 40 mm metric standoff adapter (B dimension) for precise axial adjustments.
• Option 080 specifies an 80 mm probe penetration length (C dimension) inside the stainless steel sleeve.
• Option 03 supplies one M20 fitting and two plugs to streamline robust field wiring connections.
• Option 02 utilizes a 3/4-14 NPT mounting thread, providing secure mechanical attachment for standoff-configured applications.
• Advanced PPS thermoplastic housing containing glass and conductive fibers provides Type 4X and IP66 ingress protection.
• Self-contained design eliminates intermediate extension cables and dedicated proximity sensor enclosures.

Applications

• Continuous radial vibration and axial position monitoring on utility turbines and industrial gearboxes.
• Machinery protection inside hazardous locations requiring ATEX, IECEx, and North American certifications.
• Severe environmental installations exposed to chemical spray, condensing humidity, or ambient moisture.
• Simplified field installations where minimizing external terminal boxes and conduit runs is a priority.

Ordering Information

Technical Specifications

Installation Guidelines

• Verify that the total B plus C dimensions do not exceed 305 mm (12.0 in) without additional sleeve support near the probe to prevent mechanical resonance.
• Ensure all field wiring terminals inside the housing are clean and dry before securing the cover to maintain IP66 and Type 4X ratings.
• Use a high-quality thread sealant on the 3/4-14 NPT mounting threads (Option 02) to maintain a robust environmental seal with the machine case.
• Route field cabling through the provided M20 fitting (Option 03), installing a cable gland or conduit seal to prevent external moisture from traveling into the housing.
• Set the initial probe physical gap at the electrical center of the linear range to ensure proper scale factor accuracy.

Compliance and Certifications

• ATEX/IECEx: Ex ia IIC T4/T5 Ga, Ex ia IIIC T90C/T105C Dc (with appropriate intrinsic safety barriers)
• cNRTLus: Class I, Zone 0: AEx/Ex ia IIC T4/T5 Ga; Class I, Division 1, Groups A, B, C, D; Class II, Groups E, F, G; Class III
• Zone 2 / Division 2: Ex nA IIC T4/T5 Gc, Ex ec IIC T4/T5 Gc; Class I, Division 2, Groups A, B, C, D
• CE Mark: Complies with European Union electromagnetic and environmental safety requirements