Bently Nevada 330730-040-12-CN 11 mm Extension Cable

Bently Nevada 330730-040-12-CN: A Robust Extension Cable for Critical Machinery

The Bently Nevada 330730-040-12-CN is a high-performance extension cable. It is specifically engineered for the 3300 XL 11 mm proximity probe system. This component connects the probe to the Proximitor Sensor. It ensures reliable signal transmission in demanding applications. Steam and gas turbines are common use cases. Its robust construction includes a FluidLoc cable. It also features a connector protector. These make it ideal for environments with oil leaks. Moisture ingress is another primary concern. Choosing this genuine part ensures system integrity. It also extends the operational lifespan of your monitoring assets.

Technical Specifications and Performance

Key Electrical Parameters and Compliance

The 3300 XL 11 mm Extension Cable maintains signal fidelity over its length. This specific model, 330730-040-12-CN , has a length of 4.0 meters (13.1 feet) . Its typical capacitance is 69.9 pF/m (21.3 pF/ft) . The center conductor resistance is 1.0 ± 0.25 ohms. The coaxial conductor resistance is 0.3 ± 0.1 ohms. These values ensure consistent performance. For optimal system operation, use a three-conductor shielded triad cable. The maximum length between the sensor and the monitor is 305 meters (1,000 feet) .

Superior Materials for Durability and Protection

The cable uses 75 Ω triaxial, fluoroethylene propylene (FEP) insulation. This provides excellent dielectric strength. It also resists high temperatures. The operating and storage range is -52°C to +177°C (-62°F to +351°F) . This suits extreme thermal conditions. Gold-plated brass ClickLoc connectors lock securely into place. They prevent accidental disconnection from vibration. Additionally, the patented TipLoc and CableLoc designs offer a robust bond. They provide a pull strength of 330 N (75 lb) . This ensures long-term mechanical reliability.

FluidLoc and Connector Protector Options

This specific cable variant includes the FluidLoc option. It prevents oil from leaking out through the cable's interior. The connector protector option offers extra protection. It guards against humidity and moisture. This is valuable in wet or corrosive environments. Silicone tape is provided as an alternative. However, Bently Nevada advises against using it in turbine oil applications. The connector protector is the superior choice for such installations.

Installation and Mechanical Details

Cable Weight and Handling

The unarmored extension cable weighs 45 g/m (0.5 oz/ft) . This makes it lightweight and easy to route. An armored version is available for extra physical protection. It uses a flexible AISI 302 SST jacket with an FEP outer layer. However, this specific model comes in the standard configuration. The triaxial design and FEP insulation ensure signal integrity. This holds true even in electrically noisy environments.

Installation Guidelines and System Integration

Follow the recommended gap setting of 2.5 mm (100 mils) during installation. The system's linear range spans 0.5 mm to 4.5 mm (20 to 180 mils) . This corresponds to an output of -1 to -17 Vdc. For longer field wiring, consult the frequency response graph. This helps you understand potential signal rolloff at high frequencies. The Proximitor Sensors ship calibrated to AISI 4140 steel by default. Recalibration for other target materials is available upon request.

Packaging and Logistics

Packaging List

• 1 x Bently Nevada 330730-040-12-CN 3300 XL 11 mm Extension Cable (4.0 meters)

• 1 x Connector protector (pre-installed)

• 1 x Silicone tape (for optional sealing)

• 1 x Installation instruction sheet

Shipping Information

We ship all orders via premium international carriers. This ensures fast and secure delivery. We typically use FedEx, UPS, or DHL. The choice depends on your location and shipping preference. We provide tracking information once we dispatch your order.

Frequently Asked Questions

1. What is the exact length of the Bently Nevada 330730-040-12-CN cable?
This extension cable measures exactly 4.0 meters (13.1 feet) . The "040" in the product number indicates this length.

2. Can I use this 3300 XL 11 mm Extension Cable with probes from other manufacturers?
Bently Nevada strongly recommends using genuine components. This ensures optimal system performance. While the connector fits other 11 mm probes, non-Bently cables may compromise accuracy and calibration.

3. What is the purpose of the FluidLoc option on this cable?
The FluidLoc option prevents oil from leaking out of the machine. It stops leaks through the cable's interior. This feature is critical for oil-filled housing applications.

4. Is the connector protector required for all installations?
Bently Nevada recommends the connector protector for all installations. It is especially valuable in humid, moist, or oil-laden environments. It provides better protection than silicone tape.

5. What is the temperature range for this extension cable?
The 330730-040-12-CN operates within -52°C to +177°C (-62°F to +351°F) . This makes it suitable for most industrial turbine and compressor applications.