Product Overview

The 330902-00-15-10-02-05 is a specialized Narrow Side View (NSv) eddy current proximity probe manufactured by Bently Nevada. This sensor is specifically engineered for machinery where standard 8 mm probes cannot be installed due to physical space constraints or magnetic interference from adjacent metal surfaces. It provides non-contacting displacement measurements, converting the distance between the probe tip and a conductive target into a linear voltage signal. This armored version is widely deployed for monitoring radial vibration and axial position in high-speed centrifugal compressors, small turbines, and refrigeration units.

Technical Configuration

The specific model 330902-00-15-10-02-05 indicates the following mechanical and electrical profile:

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

• Unthreaded Length: 0.0 inches (Fully threaded housing)

• Overall Case Length: 1.5 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)

• Operating Temperature: -52°C to +177°C (-62°F to +350°F)

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

Core Engineering Characteristics

The 3300 NSv series incorporates advanced material science to ensure survivability in demanding process environments:

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

• Integrated Stainless Steel Armor: The FEP-insulated coaxial lead is protected by a flexible 304 stainless steel sleeve, shielding the internal wiring from mechanical abrasion, crushing, and exposure to corrosive lubricants.

• Hermetic Sealing: Utilizing the patented TipLoc process, the Polyphenylene Sulfide (PPS) tip is chemically bonded to the stainless steel body. This creates a vacuum-tight seal that prevents the wicking of oil or moisture into the internal sensing coil.

• High-Strength Anchoring: The CableLoc design provides up to 220 N (50 lb) of pull strength at the cable-to-probe junction, ensuring electrical continuity under high-vibration operation.

Industrial Applications and Installation

As a foundational component of Turbine Supervisory Instrumentation (TSI), this transducer offers:

• Critical Asset Protection: Ideal for monitoring shaft dynamic motion in fluid-film bearings and thrust position in compact rotating machinery.

• Superior EMI/RFI Immunity: Engineered to exceed CE standards for electromagnetic compatibility, eliminating the requirement for shielded conduit in many installations.

• Standardized Mounting: Installs via 1/4-28 UNF threading with a recommended torque of 5.1 N·m, ensuring a stable mechanical reference for precision measurements.

• Total Interchangeability: All 1.0-meter 3300 NSv components (probes, extension cables, and Proximitor sensors) are interchangeable without manual bench calibration, reducing maintenance downtime.