Description

The Bently Nevada 330101-00-08-20-02-CN is an 8 mm proximity probe belonging to the industry-standard 3300 XL 8 mm Proximity Transducer System. This specific configuration is engineered with a fully threaded case (0.0 inches unthreaded length) and a short overall case length of 0.8 inches, making it ideal for compact installations where mounting clearance is minimal. Equipped with a 2.0-meter (6.6 feet) non-armored standard cable and terminated with a miniature coaxial ClickLoc connector (without connector protector), this probe is designed to pair seamlessly with 3300 XL Proximitor sensors and extension cables. It features the specialized -CN suffix package, which provides certified compliance for China hazardous area approvals including NEPSI and CCC markings.

Operating on the eddy-current principle, this non-contacting sensor provides highly precise, dynamic measurements of shaft vibration and position. It is widely used in critical turbomachinery protection systems to monitor radial vibration, axial position, and keyphasor reference signals on high-speed rotating machinery. The rugged design ensures stable performance in harsh industrial environments containing moisture, oil, and extreme temperatures.

Features

• Precise Eddy-Current Measurement: High-accuracy, non-contact measurement of shaft dynamic vibration and static position.
• Fully Threaded Body: 0.0 inches of unthreaded length provides maximum adjustment flexibility within the bracket or housing.
• Short Case Design: Compact 0.8-inch case length for restricted installation areas.
• Standard Non-Armored Cable: Includes a 2.0-meter flexible coaxial cable without mechanical armor, suitable for standard conduit installations.
• ClickLoc Connector: Terminated with a miniature coaxial ClickLoc connector for reliable, secure connections.
• China Hazardous Area Approval (-CN): Compliance package including NEPSI and CCC certifications for operation in explosive environments.
• Excellent Thermal Stability: Maintains high accuracy across a wide range of operating temperatures on bearing casings.

Applications

The 330101-00-08-20-02-CN proximity probe is designed for machinery protection and condition monitoring in heavy rotating machinery across various industries such as power generation, oil and gas, and chemical processing. Key applications include:

• Radial vibration and shaft position monitoring in steam and gas turbines.
• Axial thrust displacement measurement on high-pressure compressors and pumps.
• Rotor dynamic analysis and machine speed (Keyphasor) measurements.
• Bearing oil film clearance and casing thermal expansion monitoring.
• Integration into 3500 series machinery protection systems.

Ordering Information

Technical Specifications

Installation Guidelines

For optimal performance and to prevent signal interference or mechanical damage during operation, please adhere to the following installation guidelines:

• Probe Gapping: Mount the probe with the appropriate probe gap (typically calibrated to -10.0 VDC or approximately 1.27 mm / 50 mils) corresponding to the linear range of the 3300 XL Proximitor sensor.
• Thread Care: Use hand tools to thread the probe into the mounting bracket or bearing casing. Avoid over-tightening to prevent damage to the 3/8-24 UNF threads.
• Cable Routing: Ensure the coaxial cable is routed away from high-voltage lines and rotating parts. Utilize conduit or protective tubing where appropriate.
• Shielding and Grounding: Maintain proper shielding and grounding practices across the monitor loop. Ensure the shield is grounded only at the monitor end of the chain to prevent ground loops.
• Connector Protection: Ensure the ClickLoc connection is kept clean and dry. Avoid sharp bends near the connector interface.

Compliance and Certifications

The 330101-00-08-20-02-CN is manufactured in compliance with international standards and incorporates regional safety approvals specifically for the Chinese market:

• NEPSI: Certified for use in hazardous locations in China.
• CCC: China Compulsory Certificate for electrical safety and explosion protection.
• CE: European Conformity compliant.
• RoHS: Restriction of Hazardous Substances compliant.