Product Overview

The 330930-040-04-CN is a high-durability extension cable designed for the Bently Nevada 3300 NSv (Narrow Side View) Proximity Transducer System. This critical link bridges the connection between an NSv proximity probe and a Proximitor sensor, facilitating the transmission of high-frequency eddy current signals. Specifically engineered for space-constrained machinery, the NSv series allows for precision vibration and position monitoring in environments where standard 8 mm probes cannot be installed due to tight counterbores or side-view interference. This cable features integrated stainless steel armor, providing the mechanical protection necessary for reliable operation in heavy industrial settings.

Technical Configuration

The model 330930-040-04-CN is defined by the following industrial specifications:

• Cable Length: 4.0 Meters (approx. 13.1 feet)

• Armor Option: 304 stainless steel flexible armor for superior crush and abrasion resistance

• Jacket Material: Fluorinated Ethylene Propylene (FEP) for chemical and oil resistance

• Connector Protection: Includes a factory-installed connector protector (04 option) to prevent moisture and fluid ingress

• Certification: CN-certified for specific regional and hazardous area requirements

• Impedance: 75 ohm coaxial design for low-loss signal propagation

• Operating Temperature: Maintains flexibility and electrical integrity from -52°C to +177°C

Engineering for Critical Assets

The 3300 NSv extension cable is optimized for high-reliability Turbine Supervisory Instrumentation (TSI) applications:

• Restricted Space Monitoring: Supports the NSv probe's unique ability to monitor shafts smaller than 51 mm (2 inches) and axial targets under 15 mm (0.6 inches) without magnetic side-loading errors.

• Miniature Coaxial Connectivity: Utilizes gold-plated ClickLoc connectors that provide a secure, vibration-proof electrical path. The self-locking mechanism ensures the cable remains connected even under intense machine vibration.

• Signal Integrity: The 75-ohm coaxial architecture is designed to minimize signal attenuation and phase shift, ensuring that the Proximitor sensor receives an accurate representation of shaft dynamic motion.

• Robust Shielding: The combination of braided shielding and stainless steel armor provides exceptional RFI/EMI immunity, protecting the measurement from electrical noise generated by nearby motors or high-voltage equipment.

Industrial Applications

As a core component of the 3300 XL NSv transducer family, this 4.0-meter extension cable is frequently deployed in:

• Centrifugal Compressors: Monitoring radial vibration and thrust position in compact air or process gas compressors.

• Refrigeration Units: Essential for protecting high-speed chilling equipment with limited internal clearances.

• Aeroderivative Turbines: Providing reliable data in the cramped, high-temperature housings of modern gas turbines.

• Fluid-Film Bearing Support: Tracking rotor dynamics to identify imbalance, misalignment, or bearing oil whirl before they lead to mechanical failure.