Product Overview

The 330902-05-30-10-02-05 is a specialized Narrow Side View (NSv) eddy current proximity probe developed by Bently Nevada. This transducer is engineered specifically for industrial machinery where standard 8 mm probes cannot be used due to severe spatial constraints, such as small shaft diameters or restricted side-view clearances. It provides precise, non-contacting displacement measurements, 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 air compressors, refrigeration units, and process gas equipment.

Technical Configuration

The alphanumeric designation 330902-05-30-10-02-05 indicates the following mechanical and electrical specifications:

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

• Unthreaded Length: 0.5 inches

• Overall Case Length: 3.0 inches

• Total System Length: 1.0 Meter (approx. 3.3 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

Engineering for Restricted Spaces

The 3300 NSv system overcomes the physical and magnetic limitations of standard probes through specialized design features:

• Small Target Precision: Optimized for radial vibration measurement on shafts with diameters smaller than 51 mm (2 inches) or axial position monitoring on flat targets as small as 15 mm (0.6 inches).

• Side-View Interference Shielding: The probe tip is uniquely shielded to ignore surrounding conductive material, allowing for accurate data acquisition within tight counterbores or compact machine housings.

• Mechanical Protection: The FEP-insulated coaxial lead is encased in flexible 304 stainless steel armor, shielding the signal path from mechanical abrasion and accidental impact within the machinery.

• Hermetic Reliability: Utilizing the patented TipLoc molding process, the probe tip is molecularly bonded to the stainless steel body to prevent oil and moisture wicking into the sensing coil.

Industrial Applications and System Integration

As a foundational element of machinery protection and diagnostic systems, this transducer offers:

• Comprehensive Monitoring: Ideal for measuring shaft dynamic motion in fluid-film bearings, thrust position, and Keyphasor phase reference signals.

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

• Hazardous Environment Readiness: Certified for deployment in Zone 0, 1, and 2 environments, making it suitable for global oil and gas and power generation sectors.

• Advanced RFI/EMI Immunity: Engineered to exceed CE mark standards for electromagnetic compatibility, ensuring stable signals in high-noise industrial environments.