Bently Nevada 330730-040-02-CN 3300 XL 11 mm Extension Cable

Product Introduction

The Bently Nevada 330730-040-02-CN is a 3300 XL 11 mm Extension Cable designed for use with 3300 XL proximity transducers. This 4.0-meter (13.1 feet) cable ensures reliable signal transmission between the probe and the Proximitor sensor. Manufactured in the U.S.A., it features a standard cable with connector protector and a country-specific approval option (CN). The 330730-040-02-CN is an essential component for accurate vibration and position monitoring in critical rotating machinery.

Technical Parameters

• Model: 330730-040-02-CN
• Product Type: 3300 XL 11 mm Extension Cable
• Cable Length: 4.0 meters (13.1 feet)
• Connector Option: Standard cable with connector protector
• Agency Approval: Country Specific (CN)
• Extension Cable Capacitance: 69.9 pF/m (21.3 pF/ft) typical
• Extension Cable Material: 75 Ω triaxial, fluoroethylene propylene (FEP) insulated
• Operating and Storage Temperature: -52°C to +177°C (-62°F to +351°F)
• Weight (unarmored): 0.18 kg (45 g/m)
• Weight (armored): 0.56 kg (140 g/m)
• DC Resistance (center conductor): 1.0 ± 0.25 ohms
• DC Resistance (coaxial conductor): 0.3 ± 0.1 ohms
• Connector Material: Gold-plated brass

Parameter Analysis

The 330730-040-02-CN extension cable is engineered for low capacitance (69.9 pF/m) to maintain signal integrity over its length. With a system length of 5 or 9 meters including the extension cable, it supports standard proximity probe configurations. The cable’s FEP insulation provides excellent dielectric properties and high-temperature resistance. The optional armored version offers additional mechanical protection with AISI 302 SST armor and FEP outer jacket. The gold-plated brass connectors ensure corrosion resistance and reliable electrical contact.

Application Scenarios

This extension cable is widely used in industrial rotating machinery monitoring, including turbines, compressors, pumps, and other critical equipment. It connects 3300 XL 8 mm and 11 mm proximity probes to Proximitor sensors, enabling measurement of shaft vibration and axial position. The 330730-040-02-CN is suitable for applications requiring high reliability in harsh environments, such as power generation, oil and gas, and petrochemical plants.

Installation Guide

When installing the 330730-040-02-CN, ensure the cable is routed away from high-temperature surfaces and sharp edges. Use the provided silicone tape or connector protectors to seal the probe-to-extension cable connection, especially in humid or moist environments. For turbine oil exposure, connector protectors are recommended over silicone tape. The cable can be used with field wiring of 0.2 to 1.5 mm² (16 to 24 AWG), and the maximum field wiring length between the Proximitor and monitor is 305 meters (1,000 feet).

Compatibility

The 330730-040-02-CN is compatible with Bently Nevada 3300 XL 11 mm proximity probes and 3300 XL Proximitor sensors. It is designed for use with 5 or 9 meter system lengths. The cable is part of the 3300 XL series and works with 3500 monitoring systems when used with appropriate Proximitors. Always verify system length and connector compatibility before installation.

Maintenance Advice

Regularly inspect the cable and connectors for damage, wear, or contamination. Keep connectors clean and dry. If the cable is exposed to oil or moisture, clean it with a suitable solvent and ensure connector protectors are intact. Periodically check the cable’s electrical characteristics, such as capacitance and resistance, to ensure they remain within specified tolerances. Replace any damaged cable immediately to avoid signal degradation.

Procurement Advice

When ordering the 330730-040-02-CN, confirm the required cable length and connector options. This model includes a connector protector and country-specific approval (CN). For armored versions, specify the armored option. Ensure that the system length (probe + extension cable) matches your application requirements (5 or 9 meters). Purchase from authorized Bently Nevada distributors to guarantee genuine parts and technical support.

FAQ

1. What is the length of the 330730-040-02-CN extension cable?

The cable length is 4.0 meters (13.1 feet).

2. What is the temperature range for this extension cable?

The operating and storage temperature range is -52°C to +177°C (-62°F to +351°F).

3. Can this cable be used with armored versions?

Yes, the extension cable can be ordered with optional armor (flexible AISI 302 SST with FEP outer jacket).

4. Is the 330730-040-02-CN compatible with all 3300 XL probes?

It is designed for use with 3300 XL 11 mm probes, but it can also be used with 8 mm probes if the system length is appropriate. Always check compatibility with your specific probe model.

5. What is the capacitance of this cable?

The typical capacitance is 69.9 pF/m (21.3 pF/ft).