Bently Nevada 330881-28-11-214-00-02 PROXPAC XL Proximity Transducer

Description

330881-28-11-214-00-02 specifies a metric PROXPAC XL integrated transducer configured with a 3300 XL 8 mm proximity probe with multiple hazardous area approvals (Option 28), a 110 mm standoff adapter (Option 11), a 214 mm probe penetration length (Option 214), no conduit fittings (Option 00), and a 3/4-14 NPT mounting thread (Option 02).

The PROXPAC XL Proximity Transducer Assembly integrates a 3300 XL 8 mm proximity probe and a 1-meter Proximitor sensor into a single, self-contained, protective housing. This design eliminates the need for an extension cable between the probe and Proximitor, as well as a separate external Proximitor enclosure, allowing field wiring to connect directly from the monitor to the PROXPAC XL terminal blocks.

Unlike other configurations in the 330881 metric series which may use non-approved probes (Option 16) or contain no probe at all (Option 00 or 01), this variant comes standard with the multiple-approval certified 3300 XL 8 mm probe. While alternative designs may omit the standoff adapter (Option 00) or feature customized conduit fittings such as PG21 or M25 options, this assembly is configured with a 110 mm standoff length, standard 3/4-14 NPT thread, and blanking plugs to seal the housing when external fittings are not required. The housing cover of the PROXPAC XL is made of glass-reinforced polyphenylene sulfide (PPS) thermoplastic containing conductive fibers to strengthen the assembly and dissipate electrostatic charge, offering Type 4X and IP66 environmental protection.

Features

• Option 28: Integrated 3300 XL 8 mm proximity probe with multiple international hazardous area certifications (ATEX, IECEx, and North American approvals).
• Option 11: 110 mm standoff adapter provides precise offset positioning from the machine casing.
• Option 214: 214 mm probe penetration length accommodates deep installation requirements in large-diameter shafts or thick casings.
• Option 00: Fittings kit with no active conduit fittings, supplied with two washers and two blanking plugs to protect open ports.
• Option 02: 3/4-14 NPT mounting thread ensures robust mechanical connection for the standoff adapter.
• Glass-reinforced polyphenylene sulfide (PPS) thermoplastic housing containing conductive fibers to withstand mechanical impact and dissipate electrostatic charge.
• Self-contained design combines both the probe and Proximitor sensor to eliminate extension cables and separate enclosures.
• Type 4X and IP66 environmental ratings provide robust protection in harsh, wet, or corrosive environments.

Applications

• Hydroelectric, steam, and gas turbine shaft vibration and position monitoring.
• Industrial pumps, compressors, and fans in petrochemical and oil and gas installations.
• Machinery protection systems requiring simplified wiring setups without auxiliary junction boxes.
• Wet or corrosive industrial applications requiring Type 4X and IP66 environmental protection.

Ordering Information

Technical Specifications

Installation Guidelines

• Grounding: Ensure the internal grounding liner and retaining plate are properly connected to prevent ground loop interference.
• Moisture Prevention: Use proper conduit seals and routing loops to prevent moisture from traveling through the conduit and accumulating in the PPS housing.
• Probe Gap: Use the recommended gap setting of 1.27 mm (50 mils) corresponding to approximately -9 Vdc terminal output when configuring the system.
• Standoff Stiffening: Assemblies with a combined standoff adapter and probe penetration length (B + C dimensions) exceeding 305 mm require additional sleeve support near the probe tip to prevent mechanical resonance.
• Torque Limits: Tighten the probe sleeve locknut to 39.3 N-m (350 in-lb) and the outer housing retaining nut to 29.5 N-m (260 in-lb). Do not over-torque to prevent thread damage.

Compliance and Certifications

• ATEX/IECEx: Ex ia IIC T5...T1 Ga, Ex ia IIIC T90C...T280C Dc (for hazardous dust atmospheres), Ex nA IIC T5...T1 Gc, Ex ec IIC T5...T1 Gc.
• CSA/North America: 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, Zone 2: AEx/Ex ec IIC T5...T1 Gc.
• CE Mark: Complies with applicable European Union directives.
• Ingress Protection: IP66 housing rating (verified by BASEEFA report T07/0709) and Type 4X environment rating.