Description

The Bently Nevada 330101-40-60-05-02-CN is a high-precision, unarmored 8 mm proximity probe belonging to the industry-standard 3300 XL series of eddy-current transducer systems. This specific configuration features a 3/8-24 UNF threaded body, an extended 4.0-inch unthreaded length, a 6.0-inch overall case length, and a 0.5-meter (1.6 feet) total cable length terminated with a standard miniature coaxial ClickLoc connector. Certified under the -CN China hazardous area approval package, this probe is specifically marked and certified with NEPSI and CCC approvals for hazardous industrial zones in China. It is designed to perform non-contact shaft vibration, position, and displacement measurements on critical rotating machinery operating in demanding environments.

Compared to armored or shorter-case variants, this unarmored configuration offers excellent flexibility for installations where probe casing protection is provided by a mounting sleeve or conduit, and where deep insertion into machine housings is required. The 0.5-meter cable is optimized for coupling with a 3300 XL extension cable in 5-meter or 9-meter overall system configurations, delivering linear eddy-current measurement to a paired 3300 XL Proximitor sensor.

Features

• Eddy-Current Measurement Principle: Delivers non-contact displacement measurement with high accuracy and repeatability.
• Optimized Probe Geometry: Features a 4.0-inch unthreaded section and a 6.0-inch overall case length, ideal for recessed or deep-well installations.
• Unarmored Design: Provides a lightweight, flexible cable profile suited for routing through protective conduit or guide tubes.
• Standard Miniature Coaxial ClickLoc Connector: Ensures reliable, vibration-resistant electrical connection with standard extension cables.
• China Hazardous Area Approval (-CN): Explicitly certified under NEPSI and CCC standards for deployment in explosive and hazardous atmospheres within mainland China.
• Rugged System Integration: Offers full compatibility with Bently Nevada 3300 XL Proximitor sensors and 3500 rack monitoring channels.

Applications

The 330101-40-60-05-02-CN probe is deployed in heavy-duty machinery monitoring systems across industries such as petrochemicals, power generation, and natural gas transmission. Typical applications include:

• Radial shaft vibration monitoring on steam and gas turbines.
• Axial thrust position and rotor displacement measurement in high-speed compressors and turbocompressors.
• Casing expansion and differential expansion monitoring.
• Shaft orbit, eccentricity, and speed sensing on generator and pump bearings.
• Critical rotating asset protection in hazardous areas requiring CCC and NEPSI compliance.

Ordering Information

The Bently Nevada 3300 XL 8 mm proximity probe part numbers represent a configured assembly. The segment breakdown for this specific SKU is detailed in the table below:

Technical Specifications

Installation Guidelines

Proper installation of the 3300 XL 8 mm proximity probe is essential for achieving calibrated measurement performance and maintaining machinery protection:

• Probe Gap Calibration: Mount the probe with the appropriate physical gap between the probe tip and the target shaft surface. Typically, this is set using the DC voltage output of the Proximitor sensor (nominally -10 VDC at the center of the linear range).
• Thread Engagement and Locknut: Secure the probe body into the bracket or housing using the recommended thread torque. Ensure the locknut is securely tightened to prevent movement during machine operation.
• Cable Protection: Route the unarmored coaxial cable through a dedicated, grounded metal conduit or tray system to protect it from mechanical wear, cutting, and electromagnetic interference (EMI).
• Minimum Bend Radius: Do not bend the coaxial cable tighter than the minimum recommended bend radius of 25.4 mm (1.0 inch) to prevent internal core damage.
• Connector Handshake: Ensure ClickLoc connectors are fully clean and dry before mating. Use silicone tape or connector protectors if the junction is exposed to oil or moisture.

Compliance and Certifications

This configuration carries specific hazard classifications and compliance marks suitable for global and regional operations:

• China Certifications (NEPSI & CCC): Certified for safe operation in explosive gas and dust atmospheres in mainland China, meeting CCC (China Compulsory Certification) and NEPSI standards under the -CN approval package.
• General Industrial Compliance: Designed in accordance with international machinery protection standard API 670 for eddy-current transducer systems.
• RoHS Compliant: Manufactured using materials compliant with standard European and global hazardous substance restrictions.