Bently Nevada 330901-00-40-05-02-05 3300 NSv Proximity Probe

Description

330901-00-40-05-02-05: 3300 NSv proximity probe configured with 0.0 in of unthreaded length, a 4.0 in overall case length, a 0.5 m (20 in) total length, a standard coaxial cable with a miniature ClickLoc connector, and multiple hazardous area approvals. This sensor operates as a non-contact eddy-current transducer to measure shaft vibration and axial position in applications with restricted target geometry or tight installation clearance. It belongs to the 3300 XL NSv Proximity Transducer System and works in tandem with the 330980 Proximitor sensor and 330930 extension cable.

Unlike alternative configurations such as the 330902 armored probe series or variants equipped with integrated connector protectors (Option 01), this specific configuration features a standard unarmored FEP-insulated coaxial cable and a bare ClickLoc connector (Option 02) to maximize routing flexibility in small-bore machinery. Additionally, the 0.0-inch unthreaded length (Option 00) provides a fully threaded probe case, allowing maximum thread engagement adjustment in shallow mounting ports compared to partially unthreaded options.

Features

• 1/4-28 UNF-2A thread design on a fully threaded probe body (Option 00) for versatile depth tuning in tight ports.
• 4.0-inch overall case length (Option 40) providing intermediate reach for internal mounting configurations.
• 0.5-meter total length (Option 05) offering a short integrated lead length to minimize cable excess near the machine casing.
• Miniature ClickLoc coaxial connector (Option 02) without a pre-installed connector protector, enabling easy conduit pulling.
• Multiple hazardous area certifications (Option 05) including ATEX, IECEx, and CSA approvals for intrinsically safe environments.
• High-durability polyphenylene sulfide (PPS) probe tip and AISI 304 stainless steel case for robust wear resistance.

Applications

The 3300 NSv proximity probe is ideal for high-speed, tight-clearance industrial environments, including:

• Small-bore rotating machinery where standard 8 mm probes are too large.
• Aeroderivative gas turbines and high-speed turbocompressors.
• Radial vibration and axial position monitoring in tight-clearance bearings.
• Limited target area installations with shaft diameters smaller than 20 mm (0.8 in).

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Cable Routing: Maintain a minimum bend radius of 25.4 mm (1.0 in) for both probe cable and extension cable to prevent signal distortion or physical damage.
• Probe Torque: Apply recommended torque of 5.1 N-m (45 in-lb) when installing the 1/4-28 UNF probe case; do not exceed the maximum rated torque of 7.3 N-m (65 in-lb) to avoid stripping or thread deformation.
• Thread Engagement: Ensure thread engagement does not exceed the maximum limit of 0.375 inches for 1/4-28 threads to prevent mechanical interference or binding.
• Connector Maintenance: Ensure ClickLoc connectors are clean and dry before mating. If exposed to environmental moisture or fluids, use self-fusing silicone tape to seal the connector junction. Do not use silicone tape inside the machine casing.
• Calibration: The system is factory-calibrated to AISI 4140 steel. Calibrating to other target metals requires specific system re-calibration.

Compliance and Certifications

• ATEX/IECEx: Intrinsically Safe (Ex ia IIC T5...T1 Ga, Ex ia IIIC T90degC...T280degC Dc)
• ATEX/IECEx: Non-sparking/Increased Safety (Ex nA/ec IIC T5...T1 Gc)
• North American Certifications (CSA/cULus): Intrinsically safe for Class I, Division 1, Groups A, B, C, and D; Class II, Groups E, F, and G; Class III