Product Overview

The 330902-00-30-05-02-00 is a high-performance eddy current proximity sensor from Bently Nevada’s Narrow Side View (NSv) series. This transducer is engineered specifically for industrial machinery where spatial constraints prevent the use of standard 8 mm probes. It is the primary solution for monitoring displacement in centrifugal air compressors, refrigeration units, and process gas compressors. By converting the physical gap between the probe tip and a conductive shaft into a proportional voltage signal, it allows for the precise tracking of radial vibration and axial thrust position in high-speed rotating equipment.

Technical Configuration

The model 330902-00-30-05-02-00 follows a specific mechanical build as defined by its part number:

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

• Unthreaded Length: 0.0 inches (Fully threaded housing)

• Overall Case Length: 3.0 inches

• Total System Length: 0.5 Meters (approx. 20 inches)

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

• Agency Approval: Standard non-hazardous area (00 option)

• Linear Range: 1.5 mm (60 mils)

• Scale Factor: 7.87 V/mm (200 mV/mil) when paired with 3300 NSv Proximitor

Specialized Design for Restricted Clearances

The 3300 NSv system is uniquely capable of operating in environments that suffer from "side-view" interference:

• Narrow Side View Capability: The probe tip is shielded to ignore surrounding conductive material, permitting installation in small counterbores or on shafts with diameters as small as 51 mm (2 inches).

• Target Precision: Optimized for axial position monitoring on flat targets as small as 15 mm (0.6 inches) in diameter.

• Stainless Steel Armor: The FEP-insulated coaxial lead is protected by flexible 304 stainless steel armor, preventing mechanical damage and abrasion within the machine housing.

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

Industrial Applications and Integration

As a critical element of Turbine Supervisory Instrumentation (TSI), the 330902-00-30-05-02-00 supports comprehensive asset protection:

• Dynamic Vibration Monitoring: Captures radial shaft motion in fluid-film bearings to detect rotor imbalance or misalignment.

• Keyphasor and Speed Sensing: Capable of providing phase reference signals for advanced machinery diagnostics and RPM tracking.

• System Interchangeability: Probes, extension cables, and Proximitor sensors of the same system length (0.5m) are fully interchangeable, eliminating the need for manual bench calibration.

• Operational Durability: Designed to maintain accuracy and stability across a wide temperature range, ensuring reliable performance in harsh process environments.