Bently Nevada 330930-040-02-CN Extension Cable 4m

Bently Nevada 330930-040-02-CN 3300 NSv Extension Cable

Product Introduction

The Bently Nevada 330930-040-02-CN belongs to the trusted 3300 NSv series of proximity cable systems. This extension cable measures 4.0 meters (13.1 feet) in length and includes stainless steel armor for enhanced mechanical protection. Unlike standard versions, this cable omits the FEP outer jacket, offering a streamlined design for specific installation environments.

Manufactured in the U.S.A., this 3300 NSv extension cable ensures precise signal transfer between the probe and the Proximitor Sensor. Its 75Ω coaxial construction with FEP insulation maintains signal integrity over the entire operating temperature range. Additionally, the gold-plated brass connectors resist corrosion and provide secure, low-resistance connections. For critical rotating machinery, this Bently Nevada cable delivers the reliability that maintenance professionals expect.

Technical Specifications

The 330930-040-02-CN cable features a 75 Ω coaxial design with fluoroethylene propylene (FEP) insulation. Its center conductor exhibits a DC resistance of 0.220 Ω/m (0.067 Ω/ft), while the shield measures 0.066 Ω/m (0.020 Ω/ft). Moreover, the typical capacitance is 69.9 pF/m (21.3 pF/ft), ensuring minimal signal degradation over the 4.0-meter run.

For system compatibility, remember that the extension cable length and the probe length must add up to the Proximitor Sensor total length. The linear range starts at approximately 0.25 mm (10 mils) from the target and extends to 1.75 mm (70 mils), corresponding to -1 to -13 Vdc. Specifically, Bently Nevada recommends a gap setting of 1.0 mm (40 mils) for optimal performance.

Mechanical and Environmental Data

This 3300 NSv cable incorporates flexible AISI 302 stainless steel armor. The armor provides robust protection without adding excessive stiffness, which simplifies routing in tight machine compartments. Furthermore, the connector material is gold-plated brass, offering excellent conductivity and oxidation resistance.

The tensile strength rating reaches 220 N (50 lb) at three critical points: the probe case to probe lead, the probe lead to extension cable connectors, and the probe case to stainless steel armor. This ensures the cable withstands normal handling and installation stresses. The operating and storage temperature range spans from -52°C to +177°C (-62°F to +351°F), slightly wider than the standard option, which enhances its versatility in extreme environments.

Installation Guidelines

When installing the Bently Nevada 330930-040-02-CN, first verify the total system length by adding the probe length and the extension cable length to match the Proximitor Sensor specification. For field wiring, use 0.2 to 1.5 mm² (16 to 24 AWG) conductors, or 0.25 to 0.75 mm² (18 to 23 AWG) when using ferrules. Bently Nevada strongly recommends using three-conductor shielded triad cable for optimal noise rejection.

Additionally, the maximum field wiring length between the 3300 XL NSv Proximitor Sensor and the monitor is 305 meters (1,000 feet). However, consult the frequency response graphs (Figure 16 and Figure 17) for signal rolloff details at high frequencies when extending longer runs. During installation, avoid sharp bends that could damage the stainless steel armor, and secure the cable at regular intervals to prevent mechanical strain.

Packaging List

• Bently Nevada 330930-040-02-CN extension cable (4.0 meters, armored)

• Protective end caps for connectors

• Installation instruction sheet (quick reference)

• Cable tie mounts for routing organization

Note: Certificates and warranty documents are not included in this package.

Shipping and Delivery

We ship all orders via FedEx, UPS, or DHL with tracking numbers provided upon dispatch. The gross weight for this item is 1.5 kg, and standard packaging ensures safe transit. Expedited shipping options are available upon request.

Frequently Asked Questions (FAQ)

1. Can I use this cable with non-Bently Nevada probes?
This 330930-040-02-CN cable is specifically engineered for Bently Nevada 3300 NSv Proximitor Sensor systems. While the connector may physically mate with other brands, we strongly advise using it only with genuine Bently Nevada probes to guarantee accurate measurements and system linearity.

2. What is the difference between the "-02" and other connector options?
The "-02" option indicates stainless steel armor without an FEP outer jacket. This configuration reduces overall cable diameter and weight while maintaining excellent mechanical protection. Other options may include FEP jacketing for additional chemical resistance or different armor materials.

3. How do I clean the connector contacts?
Use isopropyl alcohol and a lint-free swab to gently clean the gold-plated brass contacts. Allow the connector to dry completely before mating. Avoid abrasive materials that could damage the plating, as this may increase contact resistance and degrade signal quality.

4. Is this cable suitable for subsea or underwater applications?
No, the Bently Nevada 330930-040-02-CN is not rated for submersible use. Its stainless steel armor and connectors are designed for industrial machinery environments with exposure to oil, vibration, and temperature extremes, but continuous immersion in liquids is not recommended.

5. What happens if I exceed the 220 N tensile strength limit?
Exceeding the 220 N (50 lb) tensile rating may permanently damage the internal coaxial conductor or the connector solder joints. This damage often manifests as intermittent signals, increased noise, or complete open circuits. Always handle the cable carefully and use strain relief where possible.