Bently Nevada 3300 NSv 1m Proximity Probe 330903-00-02-10-02-00

Bently Nevada 330903-00-02-10-02-00 Overview

The Bently Nevada 330903-00-02-10-02-00 is a high-precision 3300 NSv eddy current proximity probe designed for constrained mechanical spaces and aggressive process compressor applications. Featuring an unarmored M8X1 threaded design, a 20mm case length, and a 1.0-meter integrated standard FEP coaxial cable, this compact transducer delivers exceptional non-contact measurement stability. Weighing approximately 0.15 kg, this sensor is engineered to provide superior chemical immunity and minimal cross-talk for micro-gap monitoring on high-speed rotating assets.

Core Technical Advantages

Advanced Chemical & Case Geometries

Equipped with a polyphenylene sulfide (PPS) tip molded into an AISI 304 stainless steel housing, the probe body exhibits exceptional resistance to chemical degradation in sour gas environments. The compact 20mm case length facilitates mounting inside low-clearance machine brackets.

FEP Coaxial Insulation & Signal Integrity

The integrated 1-meter 75 Ω standard coaxial cable is insulated with rugged fluoroethylene propylene (FEP), featuring a precise center conductor resistance of 0.220 Ω/m. Terminated with a standard miniature coaxial connector, it maintains a -3dB frequency response up to 10kHz.

Linear Telemetry Precision

Provides a reliable 1.5mm measurement range corresponding to a clear -1V to -13V DC voltage output. It operates with a low deviation from linearity (±0.06mm), ensuring dependable shaft displacement tracking under extreme temperature changes.

Technical Specifications

Installation & Engineering Guide

Thread Engagement Depth Constraints

When installing this probe into an internal adapter bracket, do not exceed the maximum allowable M8X1 thread engagement depth of 12mm. Over-tightening beyond standard finger-tight parameters can lead to stress fractures in the stainless steel case; avoid high-torque drivers.

Target Area & Field Calibration

To ensure maximum scale factor accuracy, the target surface face must have a minimum diameter of 13mm. Surfaces smaller than 13mm can alter the incremental scale factor, requiring micro-adjustments to the static gap calibration settings during final setup.

Coaxial Cable Handling & Routing

Maintain a strict minimum bend radius of 25.4mm (1.0 in) along all sections of the FEP coaxial cable run. Avoid tight kinks or zip-tie pressure spikes that can distort the internal dielectric material and cause signal attenuation or phase shifts.

Technical FAQs

Q1: What is the estimated physical weight of this unarmored 3300 NSv proximity probe assembly?
A1: The net assembly weight of this specific 1.0-meter configuration is approximately 0.15 kg (0.33 lbs), making it suitable for low-mass sensor tracking setups.

Q2: Can this probe handle direct oil-mist or wet chemical environments inside a compressor?
A2: Yes. The 3300 NSv is built with a rugged PPS tip and has an integrated Viton O-ring designed to seal differential pressure between the tip and case, offering high chemical resistance compared to legacy RAM probes.

Q3: Why is the 25.4mm bend radius critical for standard FEP coaxial cables?
A3: Violating the 25.4mm bend radius can permanently damage the internal FEP insulation layer or center conductor, changing the cable impedance and degrading high-frequency signal transmission up to 10kHz.