Bently Nevada 330730-040-00-05 3300 XL NSv Extension Cable

Technical Overview

The Bently Nevada 330730-040-00-05 is a high-performance extension cable designed specifically for the 3300 XL NSv (Near Surface version) proximity transducer system. This cable acts as the vital link between a proximity probe and a Proximitor sensor, facilitating the transmission of high-frequency eddy current signals. Because the NSv system specializes in measuring vibration and position in confined spaces or against small targets, this cable maintains the strict electrical impedance required to prevent signal distortion over distance.

Configuration and Construction

This module follows a precise configuration defined by its part number suffixes. The “040” designation indicates a total length of 4.0 meters, while the “00” option specifies a standard cable without stainless steel armor. By utilizing a “05” connector option, this unit features a miniature coaxial connector with a connector protector. Consequently, the assembly provides an environmentally sealed connection that resists moisture and oil contamination common in industrial sumps and bearing housings.

The cable is engineered with high-quality FEP (Fluorinated Ethylene Propylene) insulation, which allows it to operate reliably in extreme temperature environments. Furthermore, the 3300 XL NSv architecture manages the “cross-talk” issues often found when sensors are mounted in close proximity. Since the system provides a linear range of 1.5 mm (60 mils), the extension cable must maintain precise capacitance to ensure the Proximitor sensor delivers an accurate scale factor.

Key Technical Characteristics

• Brand: Bently Nevada
• Model Number: 330730-040-00-05
• Cable Type: 3300 XL NSv Extension Cable
• Total Length: 4.0 Meters (13.1 feet)
• Armor Option: Standard Cable
• Connector Option: Miniature coaxial with connector protector
• Operating Temperature: -51°C to +177°C
• System Compatibility: 3300 XL NSv 5mm and 7mm Probes
• Insulation Material: High-performance FEP jacket
• Application Focus: Small targets and narrow mounting clearances

Primary Applications

• Linking NSv proximity probes to Proximitor sensors in centrifugal pumps.
• Monitoring radial vibration in small-diameter industrial fans and blowers.
• Tracking axial position in high-speed compressors with limited probe access.
• Providing vibration data for gearboxes and aero-derivative gas turbines.