Bently Nevada 330901-10-20-10-02-05 3300 NSv Proximity Probe

Description

Unarmored 1/4-28 UNF threaded probe body with 1.0 in unthreaded length (Option 10), 2.0 in overall case length (Option 20), and a 1.0 m total standard cable length (Option 10) specifies this 3300 NSv proximity probe configuration — 330901-10-20-10-02-05 3300 NSv Proximity Probe.

This non-contacting eddy-current transducer is engineered for reduced target area and tight clearance environments, offering critical shaft vibration and position measurements on small-bore rotating machinery. Option 02 provides a miniature coaxial ClickLoc connector with standard cable, and Option 05 equips the assembly with Multiple Approvals for hazardous area installations.

Designed to operate seamlessly within the 3300 XL NSv Proximity Transducer System, this probe pairs directly with the 330930 NSv extension cable and the 330980 NSv Proximitor Sensor. Compared to standard 8 mm probe variants, the NSv design is optimized for applications with limited shaft geometry or close spacing requirements, utilizing its small tip size to prevent cross-talk and maintain measurement linear range up to 1.5 mm (60 mils).

Features

• Option 10 unthreaded length provides a 1.0 in (25.4 mm) unthreaded section for specific installation depth requirements.
• Option 20 overall case length provides a 2.0 in (50.8 mm) total case length with 1/4-28 UNF thread.
• Option 10 total length designates a 1.0 m (39 in) probe cable with a miniature coaxial ClickLoc connector.
• Option 02 connector type features a miniature male ClickLoc coaxial connector on standard unarmored coaxial cable.
• Option 05 multiple approvals deliver CSA, ATEX, and IECEx hazardous area certifications for intrinsically safe and non-sparking zones.
• Unarmored AISI 304 stainless steel case material stands up to demanding industrial environments.
• Polyphenylene sulfide (PPS) probe tip ensures robust chemical resistance and high-temperature performance.

Applications

• Small-bore rotating machinery shaft monitoring
• Shaft vibration and axial position measurements on aeroderivative gas turbines
• High-speed equipment with restricted target areas or limited radial clearances
• Radial vibration or position measurements where close sensor spacing is necessary

Ordering Information

Technical Specifications

Connections and Interfaces

The probe lead terminates in a miniature male coaxial ClickLoc connector, designed for quick, secure connection to the 330930 extension cable without requiring specialized assembly tools.

Installation Guidelines

• Ensure a minimum probe tip clearance of at least 25 mm (1.0 in) for axial position measurements to prevent electromagnetic cross-talk with adjacent sensors.
• For radial vibration measurements on shafts smaller than 20 mm (0.8 in), expect a potential scale factor change up to 10%.
• Recommended case torque must not exceed 5.1 N m (45 in lb) during installation into a 1/4-28 UNF threaded hole.
• Protect coaxial connectors using self-fusing silicone tape or a connector protector kit to prevent liquid ingress.

Compliance and Certifications

• CSA: Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga; Class I, Div 1, Groups A, B, C, D
• ATEX/IECEx: Ex ia IIC T5...T1 Ga; Ex ia IIIC T90C...T280C Dc; Ex nA IIC T5...T1 Gc; Ex ec IIC T5...T1 Gc
• RoHS: Compliant with European Community Directive 2011/65/EU and China RoHS (15-year EFUP)
• Functional Safety: SIL 2 certified (HFT=0), SIL 3 capable (HFT=1)
• CE: Compliant with European Community Directive EMC 2014/30/EU