SKU: 330703-000-100-10-02-00

Bently Nevada 330703-000-100-10-02-00 3300 XL NSv Proximity Probe

The Bently Nevada 330703-000-100-10-02-00 is a 3300 XL NSv proximity probe designed for small-target vibration monitoring. Featuring a 100mm case length and 3/8-24 UNF threads, this 1.0m eddy-current sensor delivers precise data in confined mounting spaces and high-speed industrial applications.

Technical Overview

The Bently Nevada 330703-000-100-10-02-00 belongs to the 3300 XL NSv (Near Surface version) transducer line, engineered specifically for applications where standard probes cannot be used. Because the NSv system utilizes a unique transducer design, it effectively monitors vibration and position against small targets or in tight clearances where side-wall interference might otherwise distort readings. This probe enables high-precision shaft monitoring in small-bore pumps, high-speed compressors, and specialized industrial machinery.

Engineering Design and Configuration

This proximity probe utilizes a modular part-numbering system to ensure exact mechanical fitment. The 330703 series features a 3/8-24 UNF threaded body designed for standard mounting brackets or bearing housings. With the “000” and “100” configuration, this model specifies a 100mm (approximately 4 inches) unthreaded length and a total case length optimized for deep-reach installations. Furthermore, the unit incorporates a 1.0-meter (10) total length with a miniature coaxial connector (02), maintaining the electrical capacitance required for high-fidelity signal transmission.

Since the probe tip is manufactured from chemical-resistant polyphenylene sulfide (PPS), it operates reliably when submerged in lubrication oil or exposed to moisture. The NSv architecture differs from the standard 8mm system by providing a linear range of 1.5 mm (60 mils). Consequently, this hardware provides a stable scale factor of 7.87 V/mm (200 mV/mil) even when the probe is surrounded by metal surfaces that would typically cause “clamping” or error in standard eddy-current sensors.

Key Technical Characteristics

Brand: Bently Nevada
Model Code: 330703-000-100-10-02-00
System Type: 3300 XL NSv
Thread Size: 3/8-24 UNF
Unthreaded Length: 0.0 mm
Overall Case Length: 100 mm
Total Cable Length: 1.0 Meter
Connector Type: Miniature Coaxial (Click-Loc)
Linear Range: 1.5 mm (60 mils)
Operating Temperature: -52°C to +177°C

Primary Applications

Monitoring radial vibration in small-diameter centrifugal pumps.
Measuring axial displacement in high-speed turbochargers.
Providing speed and phase reference signals (Keyphasor) on small shafts.
Interfacing with machinery where mounting space restricts the use of 8mm or 11mm probes.
Managing vibration diagnostics for aero-derivative gas turbines.