Bently Nevada 330901-00-90-05-02-00 3300 NSv Proximity Probe

Description

Option 00 (0.0 in unthreaded length) and Option 90 (9.0 in case length) specify this 1/4-28 UNF threaded proximity probe configuration — 330901-00-90-05-02-00. This non-armored 3300 NSv proximity probe is engineered for non-contact eddy-current displacement measurements in tight clearances and reduced target areas. It features a 0.5 meter (20 in) total probe length terminated in a miniature coaxial ClickLoc connector on a standard cable (Option 02), with no agency approval package (Option 00) selected.

The 3300 NSv system is optimized for machinery with small target geometry, such as aeroderivative gas turbines and centrifugal turbocompressors, where standard 5 mm or 8 mm probes cannot fit or would experience severe side-view interference. The probe pairs directly with the 330930 series extension cable and a 330980 Proximitor sensor to provide a linear range of 1.5 mm (60 mils) and a nominal scale factor of 7.87 V/mm (200 mV/mil) over a smaller target footprint.

Features

• Option 00 specifies a fully threaded 0.0 in unthreaded length for maximum thread depth versatility.
• Option 90 provides an overall case length of 9.0 in, accommodating deep tap depth installations.
• Option 05 designates a 0.5 meter (20 in) total length of 75-ohm coaxial cable, preventing excessive excess slack.
• Option 02 includes a miniature coaxial ClickLoc connector on standard, non-armored FEP insulated cable.
• Optimized side-view response prevents side-wall interference in narrow boreholes and counterbores.
• Polyphenylene sulfide (PPS) probe tip with AISI 304 stainless steel case ensures structural and chemical resistance.

Applications

• Radial vibration and axial position measurement on shaft diameters smaller than 20 mm.
• Aeroderivative gas turbines and centrifugal compressor bearing housings.
• Small-bore machinery and high-speed machinery with limited radial clearance.
• Fluid film bearing monitoring in tight spatial envelopes.

Ordering Information

Technical Specifications

Installation Guidelines

• Maintain thread engagement limits (maximum 0.375 in for 1/4-28 threads) to prevent binding during installation.
• Ensure minimum case-to-target spacing is maintained to avoid side-view calibration errors.
• Do not exceed recommended case installation torque of 5.1 N-m (45 in-lb).
• Keep minimum bend radius of 25.4 mm (1.0 in) for standard coaxial cable routing.
• Protect coaxial connection with a connector protector or silicone self-fusing tape to prevent moisture ingress.