The Bently Nevada 330930-040-00-00 is a 4.0-meter (13.1-foot) extension cable designed for use with the 3300 NSv (Narrow Side-view) eddy current proximity transducer system. This non-armored cable facilitates the connection between the NSv proximity probe and the Proximitor sensor, ensuring reliable signal transmission in space-constrained industrial monitoring applications.

Features

• Designed for small target applications and machines with shaft diameters smaller than 51 mm (2 in).
• Compatible with 3300 NSv series probes and Proximitor sensors.
• Provides an average scale factor of 7.87 V/mm (200 mV/mil).
• Constructed with 75 Ohm coaxial cable and FEP insulation for durability in harsh environments.
• Compact design allows for installation in tight spaces, such as between thrust bearing pads.

Applications

• Radial vibration and radial position measurement on small-diameter shafts.
• Axial (thrust) position measurements on flat targets.
• Tachometer and zero speed measurements.
• Phase reference (Keyphasor) signal acquisition.
• Commonly used in centrifugal air compressors, refrigeration compressors, and process gas compressors.

Technical Specifications

Installation Guidelines

• Ensure the total system length (probe + extension cable) matches the configuration requirements of the Proximitor sensor.
• Handle coaxial cables with care; avoid sharp bends or kinks that may alter the impedance or damage the internal conductor.
• Ensure connectors are clean and free of debris before mating to prevent signal noise or ground loops.
• Route cables away from high-EMI sources, such as high-voltage power lines or variable frequency drives, to maintain signal integrity.
• Verify that the probe gap is set correctly (typically 1.0 mm or 40 mils) during system commissioning.
• Always power down the monitoring system before disconnecting or connecting transducer components.

FAQ

What is the 330930-040-00-00?

It is a 4.0-meter standard extension cable for the Bently Nevada 3300 NSv Proximity Transducer System, used to connect the probe to the Proximitor sensor.

Can this cable be used with standard 3300 XL 8mm probes?

No, the NSv system is specifically designed for the smaller 5mm probe tip diameter and has unique electrical characteristics; it must be used with compatible NSv components.

What is the required system length?

The total system length must match the Proximitor sensor configuration. For this 4.0m extension cable, it is typically paired with a 1.0m probe for a 5.0m total system length or a 5.0m probe for a 9.0m total system length.