Bently Nevada 330730-040-10-CN 3300 XL 11 mm Extension Cable

Product Introduction

The Bently Nevada 330730-040-10-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 features the FluidLoc option to prevent oil leakage and is approved for country-specific use (CN). It ensures reliable signal transmission between the probe and proximitor in critical rotating machinery monitoring applications.

Technical Parameters

• Model: 330730-040-10-CN
• Length: 4.0 meters (13.1 feet)
• Capacitance: 69.9 pF/m (21.3 pF/ft) typical
• DC Resistance (center conductor): 1.0 ± 0.25 ohms
• DC Resistance (coaxial conductor): 0.3 ± 0.1 ohms
• Operating/Storage Temperature: -51°C to +177°C (-60°F to +351°F)
• Weight: 0.18 kg (unarmored), 0.56 kg (armored optional)
• Connector Material: Gold-plated brass
• Cable Material: 75 Ω triaxial, FEP insulated

Parameter Analysis

The 330730-040-10-CN offers a 4.0 mm linear range with an incremental scale factor of 3.94 V/mm (100 mV/mil) ±10%. The recommended gap setting is 2.5 mm (100 mils). The cable is designed for system lengths of 5 or 9 meters including extension cable, ensuring compatibility with standard 3300 XL configurations. The FluidLoc option prevents liquid ingress, enhancing reliability in oil-rich environments.

Application Scenarios

This extension cable is ideal for vibration and position monitoring in turbines, compressors, pumps, and other rotating machinery. It is commonly used in oil, gas, power generation, and petrochemical industries where precise shaft vibration and thrust measurements are critical for predictive maintenance and machine protection.

Installation Guide

Install the 330730-040-10-CN between the 3300 XL probe and the Proximitor sensor. Ensure the connectors are clean and properly tightened. Use the provided silicone tape or connector protectors for environmental sealing, especially in humid or moist conditions. Avoid exposing the connection to turbine oil unless using connector protectors. Route the cable away from high-temperature surfaces and sharp edges to prevent damage.

Compatibility

This cable is compatible with Bently Nevada 3300 XL 11 mm probes and 3300 XL Proximitor sensors. It supports system lengths of 5 or 9 meters. Field wiring between the Proximitor and monitor can be up to 305 meters (1,000 feet) using three-conductor shielded triad cable (0.2 to 1.5 mm² / 16 to 24 AWG).

Maintenance Advice

Periodically inspect the cable for cuts, abrasions, or chemical damage. Check connector integrity and ensure protective caps or tape are intact. If the cable is exposed to oil or moisture, clean and dry connectors before reuse. Replace the cable if any damage is detected to maintain measurement accuracy.

Procurement Advice

When ordering, verify the model number 330730-040-10-CN to ensure correct length and options. Confirm compatibility with your existing 3300 XL system. Consider purchasing spare cables for critical machinery to minimize downtime. For armored versions, specify the optional flexible AISI 302 SST armor if additional mechanical protection is needed.

FAQ

1. What is the length of the 330730-040-10-CN cable?

The cable length is 4.0 meters (13.1 feet), as indicated by the ‘040’ in the model number.

2. Can this cable be used with standard 3300 XL probes?

Yes, the 330730-040-10-CN is designed for 3300 XL 11 mm probes and is part of the 3300 XL system.

3. What is the FluidLoc option?

FluidLoc prevents oil and other liquids from leaking out of the machine through the cable’s interior, enhancing reliability in oil-wetted environments.

4. What is the temperature range for this cable?

The operating and storage temperature range is -51°C to +177°C (-60°F to +351°F).

5. Is an armored version available?

Yes, optional armor is available with flexible AISI 302 SST and FEP outer jacket, increasing weight to 0.56 kg.