330930-040-00-00 | Bently Nevada 3300 NSv Extension Cable

Product Introduction

The Bently Nevada 330930-040-00-00 functions as a critical component within the 3300 NSv proximity monitoring system. This extension cable connects a proximity probe to a Proximitor Sensor, completing the transducer circuit for accurate vibration and position measurements. Manufactured in the U.S.A., this cable maintains signal integrity over its 4.0-meter length. Consequently, it plays an essential role in protecting rotating machinery such as turbines, compressors, and pumps.

Technical Specifications

The model number clearly defines the key characteristics of this cable. The 330930-040-00-00 offers a 4.0-metre (13.1 feet) length, suitable for many standard installation configurations. The "00" option indicates that this cable comes without stainless steel armor, making it lighter and more flexible for applications where mechanical protection is unnecessary.

This cable features a 75 Ω coaxial design with fluoroethylene propylene (FEP) insulation, ensuring excellent signal quality. Its typical capacitance measures 69.9 pF/m (21.3 pF/ft) . The DC resistance from the center conductor is 0.220 Ω/m (0.067 Ω/ft) , while the shield resistance is 0.066 Ω/m (0.020 Ω/ft) . Additionally, the system's linear range begins at approximately 0.25 mm from the target and extends to 1.75 mm. We recommend a gap setting of 1.0 mm (40 mils) for optimal performance.

Compatibility Requirements

Proper system configuration requires attention to total length calculations. You must ensure that the extension cable length and the probe length, when added together, equal the Proximitor Sensor total length. This matching requirement guarantees accurate calibration and reliable measurements. The 330930-040-00-00 works seamlessly with all 3300 NSv probes and sensors that support this total length specification.

Mechanical & Environmental Durability

The 330930-040-00-00 withstands demanding industrial conditions effectively. It offers a wide operating and storage temperature range of -51°C to +177°C (-60°F to +351°F) . The cable material consists of a robust 75 Ω coaxial, FEP-insulated design. For applications requiring additional mechanical protection, an optional flexible AISI 302 stainless steel armor with or without an FEP outer jacket is available.

The cable features gold-plated brass connectors that resist corrosion and ensure reliable electrical contact. The rated tensile strength reaches 220 N (50 lb) at three critical points: probe case to probe lead, probe lead to extension cable connectors, and probe case to stainless steel armor. This robust mechanical construction ensures dependable performance throughout the cable's service life.

Field Wiring Guidelines

For field wiring, we recommend using a three-conductor shielded triad cable with a conductor size of 0.2 to 1.5 mm² (16 to 24 AWG). With ferrules, the recommended size ranges from 0.25 to 0.75 mm² (18 to 23 AWG). The maximum allowable length between the 3300 XL NSv Proximitor Sensor and the monitor reaches 305 meters (1,000 feet) . However, you should consult the frequency response graphs (Figure 16 and Figure 17) for signal rolloff characteristics when using longer field wiring lengths. These graphs provide valuable guidance for maintaining signal quality over extended distances.

Packaging List

Each unit of the 330930-040-00-00 arrives in secure packaging to ensure safe delivery. The package includes the following items:

• 1 x Bently Nevada 330930-040-00-00 3300 NSv Extension Cable (4.0 meters)

• 1 x Connector protector (for moisture protection)

Please note that this product package does not include probes, Proximitor Sensors, mounting hardware, or any documentation such as certificates or warranty cards. You must order these items separately if required.

Shipping Information

We ship all orders for the 330930-040-00-00 using premium express services to ensure timely and secure delivery. We partner with leading global carriers, including FedEx, UPS, and DHL. The specific carrier for your order will depend on your location and the shipping method you select at checkout. All shipments carry full traceability, and we will provide tracking information to you promptly.

Frequently Asked Questions (FAQ)

1. What does the "040" in the model number 330930-040-00-00 signify?
The "040" in the model number specifies the cable length. In this case, it indicates that the extension cable measures 4.0 metres (13.1 feet) long. This represents a standard length option for the 3300 NSv series.

2. What is the difference between the 330930-040-00-00 and armored versions?
The "00" option indicates that this cable comes without stainless steel armor. Armored versions offer additional mechanical protection against crushing or abrasion. The unarmored version like the 330930-040-00-00 provides greater flexibility and lighter weight, making it suitable for installations where physical protection is not a primary concern.

3. How do I determine the correct total length for my system?
You must ensure that the extension cable length and the probe length, when added together, equal the Proximitor Sensor total length. This matching requirement ensures accurate calibration. Always check your Proximitor Sensor specifications for the supported total length before ordering.

4. Can I use this cable with other Bently Nevada systems?
The 330930-040-00-00 is specifically designed for the 3300 NSv proximity monitoring system. While it may physically connect to other systems, we recommend using it only with compatible 3300 NSv components to ensure proper calibration and performance.

5. What is the operating temperature range for the 330930-040-00-00?
This extension cable handles extreme conditions effectively. Its operating and storage temperature range spans from -51°C to +177°C (-60°F to +351°F) . This makes it suitable for a wide variety of industrial settings, from cold outdoor installations to high-temperature machinery environments.