Bently Nevada 330881-28-6-155-03-02 PROXPAC XL Proximity Transducer

Description

Option 28 (3300 XL 8 mm probe with Multiple Approvals), Option 6 (60 mm standoff adapter), Option 155 (155 mm probe penetration), Option 03 (one M20 fitting, two plugs), and Option 02 (3/4-14 NPT mounting thread) specify this integrated metric proximity transducer configuration — 330881-28-6-155-03-02. The PROXPAC XL Proximity Transducer assembly functions as a completely self-contained proximity probe system, integrating both a 3300 XL 8 mm proximity probe and a 3300 XL Proximitor sensor directly into a single molded thermoplastic housing. This integration removes the need for an external extension cable between the probe and Proximitor sensor, allowing field wiring to connect directly from the monitoring system to the assembly cover terminals.

Unlike non-approved configurations or English thread variants such as the 330880 series, the 330881-28-6-155-03-02 configuration features a metric-focused layout with a 3/4-14 NPT mounting thread required for its 60 mm standoff adapter. The integrated housing cover contains a Proximitor sensor with multiple international approvals, meeting intrinsically safe and non-incendive parameters for hazardous areas. The body is molded from ultraviolet-resistant, glass-reinforced polyphenylene sulfide (PPS) thermoplastic with conductive fibers to dissipate electrostatic charges, providing a Type 4X and IP66 rating for severe industrial environments.

Features

• Option 28 integration includes a 3300 XL 8 mm proximity probe with Multiple Approvals.
• Option 6 provides a 60 mm standoff adapter for mounting adjustment.
• Option 155 specifies a 155 mm metric probe penetration length.
• Option 03 supplies one M20 conduit fitting and two plugs.
• Option 02 utilizes a 3/4-14 NPT mounting thread, required when using the standoff adapter.
• Self-contained design contains both the probe and Proximitor sensor in one housing, eliminating separate extension cabling.
• Polyphenylene sulfide (PPS) thermoplastic housing is glass-reinforced and conductive-fiber filled to withstand harsh chemical contact and electrostatic buildup.
• IP66 and Type 4X environmental ratings seal against dust and hose-directed water.

Applications

The 330881-28-6-155-03-02 is used for rotating machinery protection, particularly where space constraints or harsh outdoor conditions make running long extension cables impractical. Typical applications include shaft vibration and axial position measurements on steam turbines, gas turbines, compressors, pumps, and gearboxes in power generation, chemical processing, and oil and gas facilities. It is suitable for hazardous environments where intrinsically safe or non-incendive certifications are required.

Ordering Information

Technical Specifications

Installation Guidelines

The integrated design of the PROXPAC XL series simplifies wiring. Field wiring connections must be routed through the conduit entry. Utilize the supplied M20 fitting (Option 03) to maintain proper housing seals. Field wire size of 0.2 to 1.5 mm2 (16 to 24 AWG) is recommended, using a 3-conductor shielded triaxial cable. For grounding, ensure the internal grounding liner is securely connected, and route the drain wire according to the system's wiring layout. Take proper precautions to prevent moisture ingress through the conduit into the PPS housing.

Compliance and Certifications

The 330881-28-6-155-03-02 features multiple international hazardous area certifications (Option A = 28):

• cNRTLus: Class I, Zone 0: AEx/Ex ia IIC T4/T5 Ga; Class I, Groups A, B, C, and D; Class II, Groups E, F, and G; Class III. Non-incendive Class I, Division 2, Groups A, B, C, and D; Class I, Zone 2: AEx/Ex nA/ec IIC T4/T5 Gc.
• ATEX/IECEx: Intrinsically safe II 1 G Ex ia IIC T4/T5 Ga, Ex ia IIIC T90C/T105C Dc. Non-sparking/ec II 3 G Ex nA IIC T4/T5 Gc, Ex ec IIC T4/T5 Gc.
• CE Mark: Compliant with European electromagnetic compatibility and electrical safety directives.
• Environmental Protection: Enclosure certified for IP66 and Type 4X.