Bently Nevada 330901-00-32-05-02-05 3300 NSv Proximity Probe

Description

Option 00 (0.0 in unthreaded length) and Option 32 (3.2 in case length) specify this 3300 NSv proximity probe configuration — 330901-00-32-05-02-05. This unarmored, 1/4-28 UNF threaded probe has a 0.5 m (20 in) total length (Option 05) and a standard coaxial cable with a miniature coaxial ClickLoc connector (Option 02) without a connector protector. Certified under Option 05, it is approved for multiple hazardous area installations including CSA, ATEX, and IECEx. The probe is engineered for non-contact eddy-current displacement measurement on rotating machinery with tight installation limits.

Compared to armored variants (such as the 330902 series) or configurations with pre-installed connector protectors (Option 01), this unarmored standard-cable probe is optimized for tight industrial envelopes where physical conduit or alternative cable routing provides mechanical protection. The 3.2 in fully threaded case allows precise gap positioning in small-bore machinery housing, making it highly compatible with 3300 XL NSv Proximitor Sensors and extension cables in critical vibration monitoring chains.

Features

• Thread configuration: 1/4-28 UNF-2A thread, without armor (unarmored)
• Case geometry: 3.2 inches overall case length with 0.0 inches unthreaded length (fully threaded case)
• System length: 0.5 meter (20 inches) total length
• Connection type: Miniature coaxial ClickLoc connector, standard cable (Option 02, no connector protector)
• Hazardous area compliance: Option 05 multiple agency approvals (CSA, ATEX, IECEx)
• Mechanical interface: Rugged TipLoc molding provides a secure bond between the probe tip and the body
• Cable retention: CableLoc design ensures up to 220 N (50 lb) of pull strength

Applications

• Radial vibration and radial position measurements in small-bore machinery
• Axial (thrust) position measurements on flat targets smaller than 15 mm (0.6 inches)
• Centrifugal air compressors, refrigeration compressors, and process gas compressors
• Tachometer, zero speed, and phase reference (Keyphasor) applications with tight installation clearances

Ordering Information

Technical Specifications

Installation Guidelines

To ensure proper electrical operation and system integrity, mount the probe with a 1.0 mm (40 mils) initial gap. Ensure that the unthreaded length (0.0 in) and case length (3.2 in) match the local machine bracket depth to avoid thread binding or over-penetration. Standard coaxial ClickLoc connectors should be joined securely; if the connection is subject to liquid exposure or high humidity, installing a connector protector kit is recommended. Route the standard coaxial cable inside protective conduit to guard against mechanical damage and minimize electromagnetic interference (EMI). Grounding should follow Bently Nevada drawing 140979 for non-incendive or drawing 141092 for intrinsically safe systems.

Compliance and Certifications