Bently Nevada 330901-00-18-70-02-CN 3300 NSv Proximity Probes

Description

Option 00 (0.0 in unthreaded length), Option 18 (1.8 in overall case length), Option 70 (7.0 m total length), and Option 02 (standard coaxial cable with miniature coaxial ClickLoc connector) specify this 330901-00-18-70-02-CN configuration — an eddy-current 3300 NSv proximity probe featuring the -CN China hazardous area approval package.

Unlike the armored 330902 variant, this unarmored 330901 configuration is used in installations where routing space is tight and direct mechanical protection is not required. The standard ClickLoc coaxial connector on this model does not include a connector protector, offering a compact and lightweight terminating connection profile. Crucially, the -CN suffix designates NEPSI and CCC certifications, meeting specific Chinese hazardous area directives and making it suitable for industrial machinery protection in regulated environments.

Features

• Option 00 unthreaded length (0.0 inches / 0 mm) provides a fully threaded body for deep insertion or flexible positioning.
• Option 18 case length specifies a 1.8-inch overall body length, compatible with standard mounting environments.
• Option 70 total length delivers a 7.0-meter integral cable, allowing direct connection to extension cables or transmitters without mid-route junctions.
• Option 02 connector designates a miniature coaxial ClickLoc termination on standard 75 ohm FEP-insulated cable without an integrated connector protector.
• Suffix -CN incorporates China-specific hazardous area certifications including NEPSI and CCC.
• 1/4-28 UNF-2A thread design ensures straightforward mechanical mounting on standard industrial ports.

Applications

• Non-contact shaft vibration and position monitoring in small-bore rotating machinery.
• Aeroderivative gas turbine casing and internal bearing monitoring where target clearance and geometry are highly restricted.
• High-speed machinery requiring radial vibration or axial position feedback within tight spaces.
• Process compressor vibration monitoring requiring high chemical resistance.

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Probe Thread Mounting: Thread the 1/4-28 UNF-2A probe body into the bracket or mounting port. Recommended maximum torque is 5.1 N m (45 in lb). Do not exceed 7.3 N m (65 in lb) to avoid damaging the case.
• Target Gap Calibration: Set the mechanical gap between the probe tip and target to 1.0 mm (40 mils), which corresponds to the center of the 1.5 mm (60 mils) linear operating range.
• Connector Security: Ensure ClickLoc coaxial connectors are fully seated and clicked. For environmental sealing against moisture and oil, use self-fusing silicone tape (part number 03200006) on the connections.
• Cable Bend Radius: Maintain a minimum cable bend radius of 25.4 mm (1.0 in) for the unarmored coaxial cable during routing.
• Hazardous Areas: For compliance in regulated zones, install following drawing 141092 and local certification instructions.

Compliance and Certifications

• NEPSI: Explosion protection certified for Chinese hazardous areas (via -CN suffix package).
• CCC: China Compulsory Certificate compliant for explosive atmospheres.
• ATEX / IECEx: Intrinsic safety (Ex ia IIC T5...T1 Ga) and non-sparking/increased safety (Ex nA/ec IIC) when used in approved system configurations.
• CSA: Certified for Canadian and US standards (Class I, Div 1, Groups A, B, C, D).