Bently Nevada 330730-040-11-CN Armored Extension Cable

Bently Nevada 330730-040-11-CN 3300 XL 11 mm Extension Cable

Product Introduction

The 330730-040-11-CN provides a robust connection solution for 3300 XL 11 mm proximity probe systems. This extension cable links the probe to the Proximitor Sensor, enabling precise vibration and position monitoring. Manufactured in the U.S.A., this model features a 4.0-meter length with an armored FluidLoc configuration. The "11" option indicates both stainless steel armor and the FluidLoc fluid sealing feature. Additionally, the "CN" suffix signifies country-specific agency approvals. Therefore, this cable excels in applications where fluid leakage prevention and mechanical protection are critical.

Technical Specifications

This 330730-040-11-CN cable uses a 75 Ω triaxial design with fluoroethylene propylene (FEP) insulation. The center conductor offers a DC resistance of 1.0 ± 0.25 ohms over the 4.0-meter length. Meanwhile, the coaxial conductor resistance measures 0.3 ± 0.1 ohms. Additionally, the typical capacitance is 69.9 pF/m (21.3 pF/ft), which minimizes signal degradation over the cable run. The connector is made from gold-plated brass, ensuring a secure and corrosion-resistant connection.

Furthermore, the cable's linear range spans 4.0 mm (160 mils). It begins at approximately 0.5 mm (20 mils) from the target and extends from 0.5 to 4.5 mm (20 to 180 mils). This range corresponds to a voltage output of approximately -1 to -17 Vdc. The extended Deviation from Straight Line (DSL) range reaches from 0.5 to 5.0 mm (20 to 200 mils), producing -1 to -19 Vdc. However, the extended DSL range does not apply when using zener barriers. The recommended gap setting for optimal performance is 2.5 mm (100 mils).

The Incremental Scale Factor (ISF) is 3.94 V/mm (100 mV/mil) with a ±10% tolerance. This includes interchangeability error when measured in 0.5 mm (20 mil) increments over the 4.0 mm linear range. Consequently, the 330730-040-11-CN delivers consistent and reliable measurement data across its operating range.

Mechanical and Environmental Parameters

The cable's construction emphasizes durability and fluid protection. The flexible AISI 302 SST armor provides excellent mechanical protection against crushing and abrasion. Additionally, the FEP outer jacket resists chemicals, moisture, and extreme temperatures. The FluidLoc feature is the key differentiator for this model. This option prevents oil and other liquids from leaking out of the machine through the cable's interior, which is essential for applications with pressurized lubrication systems.

The tensile strength rating is 330 N (75 pounds) from probe case to probe lead, and 270 N (60 pounds) from probe lead to extension cable connectors. These high ratings prevent accidental disconnections during operation or maintenance. The operating and storage temperature range extends from -52°C to +177°C (-62°F to +351°F), accommodating extreme industrial conditions.

The "CN" agency approval option indicates country-specific certifications for this model. This ensures compliance with regional regulatory requirements, facilitating installation in various international locations. The 3300 XL 11 mm probe also comes standard with a locknut featuring pre-drilled safety wire holes, enhancing installation security.

Installation Guidelines

Proper installation of the 330730-040-11-CN requires careful attention to system length requirements. The total length of the probe and extension cable must equal the specified Proximitor Sensor total length of 5 or 9 meters. This ensures accurate system calibration and optimal performance. For field wiring, we recommend using a three-conductor shielded triad cable. The maximum allowable distance between the 3300 XL Proximitor Sensor and the monitor is 305 meters (1,000 feet). However, please consult the frequency response graph for signal rolloff details when using longer field wiring lengths.

When installing the FluidLoc cable, ensure the sealing mechanism is properly engaged to prevent fluid leakage. The armored construction requires appropriate cable glands and fittings to maintain the protective seal. The cable weight is 140 g/m (1.5 oz/ft) for the armored version, with a total weight of 0.56 kg for the 4.0-meter length.

Packaging List

• 1 x Bently Nevada 330730-040-11-CN Extension Cable (4.0 meters, armored)

• FluidLoc sealing mechanism (integrated)

• 1 x Silicone tape (for alternative sealing, if needed)

• Cable is shipped with protective end caps

Shipping

All orders are shipped via FedEx, UPS, or DHL.

Frequently Asked Questions

1. What does the "11" option signify in the 330730-040-11-CN part number?
The "11" option indicates an armored cable with the FluidLoc feature, which prevents oil and liquid leakage through the cable interior.

2. What is the length of this 330730-040-11-CN cable?
This model has a length of exactly 4.0 meters, which is equivalent to 13.1 feet.

3. What does the "CN" suffix mean for the 330730-040-11-CN?
The "CN" suffix indicates country-specific agency approvals, ensuring compliance with regional regulatory requirements.

4. Can I use silicone tape instead of the FluidLoc feature on this cable?
Silicone tape is provided but is not recommended for turbine oil exposure applications. The FluidLoc feature provides superior fluid sealing protection.

5. What system lengths does the 330730-040-11-CN support?
This cable supports system lengths of 5 or 9 meters when combined with the appropriate probe and Proximitor Sensor.