Product Overview
In critical rotating machinery monitoring, signal integrity under extreme conditions is paramount. The Bently Nevada 330730-040-01-CN is a 3300 XL 11 mm Extension Cable designed to deliver reliable performance in demanding industrial environments. This 4.0-meter (13.1 feet) armored cable connects 3300 XL proximity probes to Proximitor sensors, maintaining accurate vibration and position measurements even in high-temperature, moisture-laden, or physically harsh settings. Part of the trusted Bently Nevada 3300 XL series, the 330730-040-01-CN ensures robust data transmission for predictive maintenance and process safety.
Technical Specifications
The Bently Nevada 330730-040-01-CN meets stringent specifications to support precision monitoring. Below are its key parameters derived from factory data:
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Cable Length: 4.0 meters (13.1 feet) – option code 040
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Connector and Cable Option: 01 Armored cable
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Extension Cable Capacitance: 69.9 pF/m (21.3 pF/ft) typical
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Extension Cable Material: 75 Ω triaxial, fluoroethylene propylene (FEP) insulated
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Extension Cable Armor: Flexible AISI 302 SST with FEP outer jacket
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Operating and Storage Temperature: -51°C to +177°C (-60°F to +351°F) [Note: another source states -52°C to +177°C, use -51°C as primary? In data we have -51°C and -52°C; we'll use -51°C as per short description, but also mention -52°C? To avoid confusion, we'll stick to -51°C from the short description since it's listed first. However the full spec says -52°C in another table. We must not invent; we have both. The rule: use the value from the data exactly. The short description says -51°C; the other table says -52°C. Since the short description is the main provided data, we use -51°C. We'll note that the exact range is verified per documentation.]
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DC Resistance (for 8.0 m cable, reference): Center conductor 2.0 ± 0.5 Ω; Coaxial conductor 0.6 ± 0.2 Ω
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Agency Approval: CN Country Specific
These specifications ensure the 330730-040-01-CN maintains signal fidelity over its 4.0-meter length, with armored protection for rugged installations.
Industry Applications
The Bently Nevada 330730-040-01-CN excels in applications where consistent measurement is critical. In power generation turbines, the armored cable withstands high vibration and temperature swings, preventing signal degradation. In oil and gas compressor trains, its FEP insulation resists chemical exposure and moisture ingress. The CN country-specific approval means it meets local regulatory requirements for industrial safety. Whether used in steam turbine shaft vibration monitoring or centrifugal compressor thrust position sensing, this extension cable preserves the accuracy of the 3300 XL probe system.
Installation and Setup
Installing the Bently Nevada 330730-040-01-CN requires careful routing to avoid sharp bends and physical stress on the armored jacket. Ensure the cable length is adequate for the distance between probe and Proximitor sensor, with no splicing. The gold-plated brass ClickLoc connectors lock securely – listen for an audible click. For environments with turbine oil, use the provided silicone tape on the connection instead of connector protectors. Pre-drilled safety wire holes on the locknut allow mechanical retention. Route cable away from high-EMI sources and secure with appropriate clamps.
Maintenance and Reliability
The 330730-040-01-CN is designed for long service life. Inspect the armored jacket periodically for cuts or corrosion – flexible AISI 302 SST resists most environments but check at bends. The FEP outer jacket remains stable from -51°C to +177°C, so thermal cycling is not a concern. Verify connector tightness during routine shutdowns. If damaged, replace the entire cable; field repair is not recommended. Regular maintenance ensures the extension cable continues to deliver reliable performance, reducing unplanned downtime.
Selection Guide
Before purchasing the Bently Nevada 330730-040-01-CN, verify that your 3300 XL probe requires a 4.0-meter extension cable with armored construction. This part number is specific to the CN country code – ensure compatibility with your local agency requirements. For other lengths or non-armored options, refer to the 3300 XL series catalog. UBEST Automation (ubest101) stocks genuine Bently Nevada spare parts; when ordering, confirm the complete part number – 330730-040-01-CN – matches your system configuration.