330104-03-07-05-02-05 Bently Nevada - 8mm Probe

Product Overview

The Bently Nevada 330104-03-07-05-02-05 is a high-performance 3300 XL 8mm Proximity Probe featuring a metric M10 x 1 thread and integrated stainless steel armor. Engineered for critical machinery protection systems, this sensor provides precise radial vibration and axial position measurements in demanding industrial environments. This specific configuration includes a 30 mm unthreaded length within a 70 mm case, offering specialized mounting flexibility for turbines, compressors, and pumps.

Technical Configuration

• Manufacturer: Bently Nevada (Baker Hughes)
• Part Number: 330104-03-07-05-02-05
• Unthreaded Length: 30 mm
• Overall Case Length: 70 mm
• Total Cable Length: 0.5 Meter (1.6 feet)
• Connector Type: ClickLoc Miniature Coaxial Connector
• Armor Option: Integrated Stainless Steel Armor
• Agency Approvals: CSA, ATEX, and IECEx Multi-certified (-05)

Technical Specifications

Mechanical & Environmental Protection

1. Specialized Metric Housing: This model features a 70 mm case length with a 30 mm unthreaded portion, designed to pass through non-threaded mounting brackets or machine case sections before engaging the M10 x 1 threads. With a standard build weight of 323 grams per meter, the probe maintains mechanical stability under the high-vibration conditions typical of rotating machinery.

2. Advanced Sealing and Durability: The probe tip is constructed from PPS (Polyphenylene sulfide), providing exceptional chemical stability and moisture resistance. A Viton® O-ring ensures a robust pressure seal between the tip and the stainless steel case. Note that exposing the probe to temperatures below -34°C (-30°F) may result in premature failure of the pressure seal.

3. Reliable Signal Transmission: The 330104-03-07-05-02-05 utilizes the gold-plated ClickLoc miniature coaxial connector. This connection system is specifically designed to resist the loosening effects of machine vibration while ensuring a low-resistance electrical path for the transducer signal.

Installation Guidelines

Gap Calibration: For optimal radial vibration monitoring, set the probe gap to a nominal -9 Vdc (approximately 1.27 mm or 50 mils). This ensures the probe operates in the center of its 2 mm linear range. Maximum thread engagement for the M10 x 1 threads is 15 mm.

Hazardous Area Safety: This probe is fully certified for use in intrinsically safe applications (Class I, Zone 0) when installed with approved zener barriers or galvanic isolators. It also carries ATEX and IECEx approvals for Zone 2 non-incendive circuit installations.

Wiring Best Practices: Use 3-conductor shielded triad cable for field wiring between the Proximitor Sensor and the monitor. To prevent high-frequency signal roll-off, ensure the total field wiring length does not exceed 305 meters (1,000 feet).

Technical FAQs

Q1: What is the purpose of the 30 mm unthreaded length?
A1: The unthreaded length allows the probe to be inserted through clearance holes in housings or brackets where threading is only required at a deeper point within the assembly.

Q2: Is the stainless steel armor necessary?
A2: Yes, the integrated armor provides vital protection against physical damage, abrasion, and crushing for the coaxial cable as it is routed through the machine environment.

Q3: Can this probe be used in high-temperature applications?
A3: This standard probe is rated up to +177°C. If your application exceeds this, Bently Nevada offers extended range versions where the tip can withstand up to +218°C.