330930-065-05-CN Bently Nevada 3300 XL NSv Proximity Extension Cable

Overview

The 330930-065-05-CN is a high-performance extension cable designed specifically for the Bently Nevada 3300 XL NSv (Narrow Side view) Proximity Transducer System. This specialized cable serves as the critical signal link between the proximity probe and the Proximitor Sensor, maintaining impedance matching and signal integrity in demanding industrial environments. The 330930-065-05-CN is engineered for applications with tight spatial constraints where standard proximity probes cannot be used, such as small centrifugal compressors, pumps, and motors. By ensuring precise transmission of eddy-current signals, this cable facilitates accurate vibration and position monitoring, directly contributing to the mechanical health and safety of high-speed rotating assets.

Suffix Breakdown

The model number 330930-065-05-CN is configured according to the following technical specifications:

• 330930: Base model for the 3300 XL NSv Extension Cable.

• 065 (Cable Length Option): 6.5 meters (21.3 feet). This length is specifically calibrated to match the system's electrical requirements for a total 7.0-meter or 9.0-meter system length.

• 05 (Connector and Cable Option): Equipped with heavy-duty stainless steel armor for superior mechanical protection; supplied without FEP jacket; includes factory-installed connector protectors.

• CN (Agency Approval Option): Certified for use in hazardous areas with ATEX/IECEx and Chinese NEPSI markings, ensuring compliance with global and regional safety standards.

Technical Specifications

Technical FAQs

Can this extension cable be used with a standard 3300 XL 8mm probe?No. The 330930-065-05-CN is designed exclusively for the NSv system. Using it with standard 5mm or 8mm systems will result in incorrect impedance matching and significant measurement errors.

What is the purpose of the stainless steel armor (Option 05)?The armor provides high physical durability against crushing, abrasion, and rodent damage in industrial environments. However, since this version lacks the FEP jacket, it is best suited for environments where chemical exposure is not the primary concern.

Are the connector protectors removable?The connector protectors are designed to prevent the connectors from being damaged or contaminated during the "pulling" process through conduit. They should be used during installation and can be removed for final mating.

Engineering & Installation Guide

Signal Integrity and Connector MaintenanceThe coaxial connectors on the 330930-065-05-CN are sensitive to moisture and oil. Always ensure connectors are clean and dry before mating. We recommend using a torque wrench specifically designed for proximity system connectors (0.45 N-m or 4 in-lb) to prevent over-tightening, which can deform the center pin and lead to intermittent signal loss or "spiking."

Installation in Hazardous AreasAs a NEPSI and ATEX certified component, this cable must be installed in accordance with the specific "Conditions of Safe Use" outlined in the certification documentation. Ensure that the stainless steel armor is properly bonded to the machine ground at the bulkhead or junction box to prevent electrostatic buildup or potential differences in hazardous atmospheres.

Cable Routing LimitsWhile the stainless steel armor is robust, observe the minimum bend radius of 25.4 mm (1.0 inch). Kinking the cable will change its coaxial capacitance, permanently altering the calibration of the entire proximity system and necessitating replacement of the cable to restore accuracy.