Description

The Bently Nevada 330101-00-66-10-02-CN is a specialized 8 mm non-contact proximity probe designed to deliver precise displacement and vibration measurements within the 3300 XL Proximity Transducer System. This configuration features a 3/8-24 UNF fully threaded stainless steel case without protective armor, providing an overall case length of 6.6 inches and a 0.0-inch unthreaded length. It is equipped with a 1.0-meter standard coaxial cable terminated in a miniature coaxial ClickLoc connector. Engineered for critical industrial machinery diagnostics, this variant is certified with the -CN China hazardous area approval package, which includes NEPSI and CCC compliance safety markings for deployments in China.

Operating on the eddy-current principle, this probe measures the gap between the probe tip and a target shaft to produce a dynamic output voltage proportional to shaft vibration and position. This probe is highly optimized for direct calibration with the 330180 series Proximitor sensor and 3300 XL standard extension cables, providing rugged monitoring and machinery protection for critical machinery like steam turbines, gas turbines, high-pressure compressors, and process pumps.

Features

• Rugged 8 mm tip diameter optimized for non-contact eddy-current shaft displacement and vibration sensing.
• Fully threaded 3/8-24 UNF-2A stainless steel body with a 6.6-inch case length and 0.0-inch unthreaded length.
• Terminated with a miniature coaxial ClickLoc connector for reliable, tool-free coaxial connections.
• Equipped with a standard 1.0-meter coaxial cable designed for standard non-armored industrial installations.
• Specialized -CN package provides certified NEPSI and CCC explosion-proof protection for regional compliance.

Applications

This probe is ideal for rotating machinery protection and monitoring installations in hazardous areas requiring Chinese safety certifications. Typical applications include:

• Shaft radial vibration and axial position monitoring on large steam and gas turbines.
• Rotor displacement and thermal expansion diagnostics in high-speed compressors and pumps.
• Oil-film bearing clearance measurements in power generation, petrochemical, and heavy industrial machinery.

Ordering Information

Technical Specifications

Installation Guidelines

To ensure high machinery diagnostic accuracy, the probe must be installed with the following standard engineering guidelines:

• Adjust the mechanical probe gap to the nominal position (typically 1.27 mm or 50 mils) corresponding to the mid-point of the linear electrical calibration range before locking.
• Connect coaxial interfaces with a finger-tight torque setting to protect the precision-molded gold ClickLoc connector interface. Do not use pliers on gold ClickLoc connectors.
• Route the cable safely through designated conduit systems and maintain proper shield-to-ground isolation to avoid electromagnetic or ground-loop interference.
• Ensure that thread engagement does not exceed 0.563 inches (14.3 mm) in standard mounts to avoid mechanical binding.

Compliance and Certifications

This probe configuration complies with the following regional hazardous area requirements:

• NEPSI Approval: Ex ia IIC T5...T1 Ga for intrinsically safe applications; Ex nA IIC T5...T1 Gc / Ex ec IIC T5...T1 Gc for non-sparking/increased safety zones.
• CCC Certification: China Compulsory Certification for explosion-proof safety.
• Environmental: Compliant with applicable industrial RoHS standards.