Bently Nevada 330881-28-10-140-00-02 PROXPAC XL Proximity Transducer

Description

330881-28-10-140-00-02 specifies this metric PROXPAC XL Proximity Transducer assembly configuration, featuring a 3300 XL 8 mm proximity probe with multiple approvals, a 100 mm standoff adapter, a 140 mm probe penetration length, no conduit fittings, and a 3/4-14 NPT mounting thread.

This integrated assembly packages both the 3300 XL 8 mm probe and its matching 1-metre Proximitor sensor inside a single protective Polyphenylene Sulfide (PPS) thermoplastic housing cover. This structure removes the necessity for a traditional intermediate extension cable and separate Proximitor sensor housing. Field wiring is routed directly to the internal terminals, reducing signal losses and connector points. Unlike sibling variants that lack hazardous area approvals or utilize English dimensions, this metric configuration carries multiple hazardous area certifications and uses a 100 mm metric standoff adapter to meet specific mechanical offset requirements on classified machinery casings.

Features

• Integrated Design: Houses a 1-metre 3300 XL 8 mm proximity probe and Proximitor sensor in a single unit, eliminating extension cables.
• Metric Configuration: Built with metric options, including a 100 mm standoff adapter (Option 10) and a 140 mm probe penetration sleeve (Option 140).
• Corrosion-Resistant Housing: Molded from glass-reinforced Polyphenylene Sulfide (PPS) thermoplastic with conductive fibers to dissipate electrostatic charges.
• Ingress Protection: Rated Type 4X and IP66 for protection against dust and high-pressure water jets in severe environments.
• Multiple Approvals: Option 28 probe and approvals configuration provides intrinsically safe and non-incendive hazardous area ratings (ATEX, IECEx, and North American approvals).
• Standard Mounting: Uses a 3/4-14 NPT mounting thread (Option 02) for mechanical attachment to the machine casing.
• Plug and Washer Kit: Option 00 fittings option includes two plugs and two washers with no external conduit fittings.

Applications

This integrated transducer system is used for non-contact machinery vibration, shaft displacement, and axial position monitoring in industrial environments. Typical industries and equipment include:

• Steam and gas turbine shaft vibration and position monitoring
• Centrifugal and axial compressor protection systems
• Large industrial pumps, fans, and gearboxes
• Classified hazardous locations requiring intrinsically safe or non-incendive instrumentation
• Severe outdoor or washdown environments requiring IP66 and Type 4X enclosure protection

Ordering Information

Technical Specifications

Installation Guidelines

• Sleeve Alignment: Thread the probe sleeve into the machine casing using the 3/4-14 NPT thread. Ensure correct locknut torque is applied.
• Probe Gapping: Set the initial mechanical gap at the center of the linear range (typically 1.27 mm or 50 mils) to obtain the nominal -10 Vdc bias output prior to final tightening.
• Field Wiring: Connect standard 3-conductor shielded triaxial field wiring directly to the internal terminals of the Proximitor sensor inside the housing cover. Avoid tight bends or routing near high-voltage lines.
• Moisture Prevention: Take appropriate precautions to prevent moisture or condensation from traveling through the conduit run into the PPS enclosure. Seal all conduit entries appropriately.
• Grounding: Connect the internal grounding plate and liner according to Bently Nevada drawing 141092 or 140979 depending on the hazard classification.

Compliance and Certifications

• CE Mark: Compliant with applicable European Union directives.
• Hazardous Area Approvals: Complies with ATEX, IECEx, and North American (cNRTLus) standards for Class I, Zone 0/Class I, Division 1 intrinsically safe installations when used with zener barriers or galvanic isolators.
• Non-Incendive: Certified for Class I, Division 2 and Class I, Zone 2 (Ex nA / Ex ec) installations.
• Enclosure Performance: Housing certified to withstand a 4 Joule impact at temperature extremes (-39 degC and 115 degC) per BASEEFA specifications.