Product Overview

The 330902-00-95-05-02-05 is a specialized Narrow Side View (NSv) eddy current proximity sensor engineered by Bently Nevada. This transducer is specifically designed for industrial machinery where standard 8 mm probes cannot be installed due to extreme spatial constraints, such as small shaft diameters or restricted side-view clearances. It provides precise, non-contacting displacement measurements by converting the physical gap between the probe tip and a conductive target into a linear voltage signal. This armored version is primarily utilized for monitoring radial vibration and axial position in high-speed centrifugal compressors, refrigeration units, and process gas equipment.

Technical Configuration

The alphanumeric designation 330902-00-95-05-02-05 indicates the following mechanical and electrical specifications:

• Model Series: 330902 (1/4-28 UNF thread with Stainless Steel Armor)

• Unthreaded Length: 0.0 inches (Fully threaded housing)

• Overall Case Length: 9.5 inches

• Total System Length: 0.5 Meters (approx. 1.6 feet)

• Connector Type: Miniature coaxial ClickLoc connector (02 option)

• Agency Approvals: Multi-certified for hazardous areas including ATEX, IECEx, and CSA (05 option)

• Linear Range: 1.5 mm (60 mils)

• Target Calibration: Standard AISI 4140 steel (factory calibrated)

Advanced Mechanical Engineering

To ensure reliable performance on critical assets, the 3300 NSv series incorporates several proprietary Bently Nevada technologies:

• Restricted Clearance Optimization: The probe tip is uniquely shielded to ignore surrounding conductive material, allowing for accurate data acquisition on shafts smaller than 51 mm (2 inches) or within tight counterbores.

• Flexible Stainless Steel Armor: The coaxial lead is encased in a protective stainless steel sleeve, shielding the internal FEP insulation from mechanical abrasion, fluid exposure, and accidental severing during machine assembly.

• TipLoc Molding: A chemical bonding process creates a molecular seal between the PPS (polyphenylene sulfide) tip and the probe body, preventing the wicking of oil or moisture into the internal sensing coil.

• CableLoc Anchoring: This design provides an internal pull strength of 220 N (50 lb), ensuring the electrical lead remains securely attached to the probe body under high-vibration conditions.

• ClickLoc Connectivity: Equipped with gold-plated brass connectors that provide an audible "click" when locked, ensuring a corrosion-resistant and vibration-proof electrical path without tools.

Industrial Applications and Compliance

The 330902-00-95-05-02-05 is a foundational element for comprehensive machinery protection and condition monitoring:

• Turbine Supervisory Instrumentation (TSI): Ideal for monitoring shaft motion in fluid-film bearings where installation depth requires a long case length (9.5 inches).

• System Interchangeability: Probes, extension cables, and 3300 NSv Proximitor sensors of the same system length are fully interchangeable without manual bench calibration.

• Hazardous Environment Deployment: Certified for use in Zone 0, 1, and 2 environments, making it suitable for global oil and gas and power generation facilities.

• Standard Compliance: Meets API 670 requirements for machinery protection systems, ensuring high accuracy and temperature stability.