Bently Nevada 330106-05-30-20-02-CN 3300 XL 8 mm Reverse Mount Proximity Probe

Description

330106-05-30-20-02-CN is a 3300 XL 8 mm reverse mount proximity probe featuring metric M10 x 1 threads, an unthreaded length of 5.0 mm (Option 05), a case length of 30 mm (Option 30), a total length of 2.0 meters (Option 20), a miniature ClickLoc coaxial connector (Option 02), and the China hazardous area approval package (Suffix -CN).

This configuration is designed for installation inside machine casings, typically utilizing a protective probe sleeve or housing. The reverse-mount configuration protects the probe body and cable connections from the surrounding machine environment, while the metric thread configuration provides compatibility with metric standard machinery installations. Unlike standard threaded probes, the reverse mount design allows installation and removal from outside the machine casing when a sleeve is used, minimizing downtime during maintenance. This variant includes the -CN suffix, which indicates compliance with China hazardous area standards including NEPSI and CCC certifications, distinguishing it from standard international options such as the option -05 (CSA/ATEX/IECEx).

Features

• M10 x 1 Metric Thread Case: Specifies the mechanical interface for reverse-mount installation.
• 5.0 mm Unthreaded Length (Option 05): Predetermined unthreaded spacing to align the probe within its sleeve.
• 30 mm Case Length (Option 30): Standard housing case depth for optimal stability.
• 2.0 m Total Cable Length (Option 20): Coaxial FEP insulated probe lead with integrated ClickLoc coaxial connector.
• Miniature Coaxial ClickLoc Connector (Option 02): Gold-plated brass connector without connector protector.
• China Certification Package (Suffix -CN): Certified for hazardous area applications requiring NEPSI and CCC markings.

Applications

• Shaft vibration and axial position measurements in rotating machinery.
• Keyphasor reference and speed measurement systems.
• Fluid-film bearing monitoring on steam turbines, gas turbines, compressors, and pumps.
• Industrial installations in China requiring NEPSI or CCC certified machinery protection systems.

Ordering Information

Technical Specifications

Installation Guidelines

The 3300 XL 8 mm reverse mount probe is intended for installation within a protective sleeve or housing mounted directly to the machine casing. Follow these guidelines during installation:

• Verify that the thread engagement class matches external M10 x 1 threads up to a maximum thread engagement of 15 mm to avoid binding.
• Ensure the probe tip has adequate side view clearance of at least 8.0 mm (one probe tip diameter) from surrounding metal components other than the observed shaft target to prevent false readings.
• Use caution when coiling the 2.0-meter cable to avoid exceeding the minimum bend radius of 25.4 mm (1.0 in).
• Hand-tighten the miniature ClickLoc coaxial connector to ensure stable contact resistance. Do not overtighten or use tools on ClickLoc connectors.
• Implement correct grounding of the shield wire on the extension cable to mitigate noise interference in the proximity transducer loop.

Compliance and Certifications

This product configuration is specifically certified for hazardous location applications in the Chinese industrial market. Compliance includes:

• NEPSI Certification: Intrinsically safe and non-incendive hazardous area ratings in China.
• CCC (China Compulsory Certification): Compliance with national safety standards for machinery explosion protection.
• CE Mark: Direct compliance with European Union electromagnetic compatibility and safety directives when part of an approved loop.