Bently Nevada 330901-14-43-10-02-05 3300 NSv Proximity Probe

Description

Option 14 (1.4 inches unthreaded length) and Option 43 (4.3 inches overall case length) specify this 3300 NSv unarmored proximity probe configuration — 330901-14-43-10-02-05, an eddy-current proximity probe with a 1/4-28 UNF thread suitable for restricted target spaces. This specific build features a 1.0 meter total cable length (Option 10) terminated with a miniature coaxial ClickLoc connector on standard unarmored cable (Option 02) and is certified for multiple hazardous area approvals (Option 05).

Unlike armored options like the 330902 model or configurations with integrated connector protectors (Option 01), this configuration utilizes a streamlined, unarmored FEP insulated cable design for applications where external protective conduit or mechanical shielding is already provided. The 3300 NSv transducer system operates on a 1.5 mm (60 mils) linear range and is optimized for small-bore machinery or tight sideview clearances where standard 8 mm or 5 mm probes are limited by electromagnetic crosstalk and boundary restrictions.

Features

• Option 14 unthreaded length provides 1.4 inches of non-contact clearance.
• Option 43 overall case length provides 4.3 inches of thread reach using a standard 1/4-28 UNF-2A thread.
• Option 10 specifies a 1.0 meter (39 inches) probe total length, compatible with 3300 XL NSv Proximitor sensors and extension cables.
• Option 02 miniature coaxial ClickLoc connector locks securely into place without a bulky silicone connector protector.
• Option 05 multiple agency approvals package provides hazardous area certification including ATEX, IECEx, and CSA.
• Unarmored coaxial cable construction utilizes 75 ohm fluoroethylene propylene (FEP) insulation for high chemical resistance.
• TipLoc molding method forms a robust bond between the polyphenylene sulfide (PPS) probe tip and the stainless steel case.
• CableLoc design provides up to 220 N (50 lb) of pull strength between the probe lead and the probe case.

Applications

• Radial vibration and radial position measurements on high-speed turbo-expanders or centrifugal air compressors.
• Axial thrust position measurements on aeroderivative gas turbines.
• Speed and tachometer phase reference measurements (Keyphasor) on small shaft geometries under 51 mm (2.0 inches) in diameter.
• Machinery protection in tight casing clearances or deep counterbore restrictions.

Ordering Information

Technical Specifications

Installation Guidelines

• Tap Drill Selection: Use a #3 or larger tap drill when preparing mounting holes for 1/4-28 UNF probe installations.
• Case Torque Limit: Tighten the probe case to a recommended torque of 5.1 N-m (45 in-lb). Do not exceed the maximum limit of 7.3 N-m (65 in-lb) to prevent damage.
• Bend Radius: Maintain a minimum bend radius of 25.4 mm (1.0 inch) along the coaxial probe lead and any connected extension cables.
• Connector Care: Finger-tighten the ClickLoc connectors. The maximum recommended torque is 0.56 N-m (5 in-lb). Use silicone tape or connector protectors to exclude ambient moisture.
• Thread Engagement: Keep thread engagement within the 0.375-inch limit for 1/4-28 UNF probe cases to avoid binding during installation.

Compliance and Certifications

• EMC Directive: 2014/30/EU (EN 61000-6-2, EN 61000-6-4)
• RoHS Directive: 2011/65/EU
• Functional Safety: SIL 2 certified (HFT = 0), SIL 3 capable (HFT = 1)
• Hazardous Area Approvals (Option 05): CSA, ATEX, and IECEx certifications for Class I Zone 0/Zone 2, Groups A, B, C, D (Ex ia IIC T5...T1 Ga and Ex nA/Ex ec IIC T5...T1 Gc)