Bently Nevada 330881-28-08-050-03-02 PROXPAC XL Proximity Transducer

Description

330881-28-08-050-03-02: PROXPAC XL Proximity Transducer with metric options, incorporating an integrated 3300 XL 8 mm proximity probe with multiple hazardous area approvals, an 80 mm standoff adapter, 50 mm probe penetration, an M20 fitting conduit arrangement, and a 3/4-14 NPT mounting thread.

This self-contained proximity transducer assembly combines the sensor probe sleeve and its associated Proximitor sensor inside the housing cover. This integrated design eliminates the need for an external extension cable and separate Proximitor sensor housing, allowing direct field wiring connections between the machinery protection monitors and the transducer assembly. The thermoplastic housing, manufactured from glass-reinforced polyphenylene sulfide (PPS) with conductive fibers, is rated for Type 4X and IP66 environments to withstand harsh, corrosive industrial applications.

Features

• Integrated Sensor and Housing: Combines the 3300 XL 8 mm proximity probe sleeve and its associated Proximitor sensor inside the housing lid, eliminating external extension cables.
• Corrosion-Resistant Housing: Molded thermoplastic construction made of glass-reinforced polyphenylene sulfide (PPS) with conductive fibers for optimal electrostatic dissipation and severe environment protection.
• Severe Environment Protection: Engineered and rated for Type 4X and IP66 sealing against high-pressure water jets and corrosive industrial atmospheres.
• Adjustable Probe Sleeve: Built-in threaded sleeve with 3/4-14 NPT mounting threads allows easy external adjustments and precise gapping from outside the machine case.
• Hazardous Area Classifications: Compliant with international explosion protection standards including ATEX, IECEx, and CSA certifications (Multiple Approvals package).

Applications

• Shaft vibration and axial position measurements on rotating machinery.
• Critical machinery monitoring in aggressive chemical, oil and gas, and petrochemical processes.
• Turbine, compressor, and pump protection where space constraints prevent separate Proximitor housing installations.

Ordering Information

Technical Specifications

Installation Guidelines

To ensure precise performance and long-term environmental protection, follow these industrial installation guidelines:

• Probe Sleeve Mounting: Thread the outer sleeve into the machine casing using the 3/4-14 NPT threads. Ensure proper thread sealant is applied to prevent lubrication oil leakage.
• Standoff Adapter: Connect the 80 mm standoff adapter to the outer sleeve. It provides the necessary mechanical clearance and axial rigidity.
• Gapping and Adjustment: Loosen the locknut and adjust the threaded sleeve externally to establish the correct probe gap (typically centered at -10.0 Vdc or 1.27 mm / 50 mils from target). Tighten the sleeve locknut to 39.3 N-m (350 in-lb) once set.
• Field Wiring Routing: Connect the field wiring cable directly to the integrated Proximitor terminal strip inside the housing cover. Use the M20 conduit entry fitting to route wires safely and maintain the IP66 seal.
• Grounding: Ensure the internal stainless steel grounding liner is connected to a clean, noise-free instrument ground. Do not ground the cable shield at both ends.

Compliance and Certifications

• CE Mark: Complies with European Union electromagnetic compatibility and low voltage directives.
• Hazardous Area Ratings: Certified for multiple global standards (Multiple Approvals package) including CSA, ATEX, and IECEx.
• Explosion Protection:
  • Ex ia IIC T4/T5 Ga (Intrinsically Safe when installed with approved zener barriers or galvanic isolators)
  • Ex nA IIC T4/T5 Gc (Non-sparking)
  • Ex ec IIC T4/T5 Gc (Increased safety)
  • Ex ia IIIC T90C/T105C Dc (Dust explosion protection)
• Mechanical Safety: Housing strength verified by BASEEFA to withstand 4 Joule impacts at extreme temperatures.