The Bently Nevada 330730-040-030-00 3300 XL 11 mm Extension Cable is a precision-engineered component designed to extend the connection between a 3300 XL 11 mm proximity probe and its associated Proximitor® sensor. It forms an essential part of the complete Bently Nevada vibration-monitoring chain, ensuring that the dynamic signals generated by the probe reach the monitoring system without distortion or loss. Built to operate in the demanding conditions of power generation, oil & gas, and heavy industrial environments, this extension cable provides robust shielding, exceptional mechanical durability, and stable electrical characteristics that preserve the accuracy of critical machinery protection data.

Product Parameters

Applications

• Turbomachinery Monitoring – Extends probe-to-driver connections for steam, gas, and hydro turbines.

• Compressors & Pumps – Supports accurate shaft vibration and axial position monitoring across long installation paths.

• Generators & Motors – Maintains stable signal quality for rotor vibration and position measurement in high-temperature machine halls.

• Industrial Fans & Blowers – Ensures reliable signal transmission in areas subject to strong vibration and mechanical stress.

• Petrochemical Plants – Withstands corrosive atmospheres while carrying high-integrity displacement signals.

• Power Generation Facilities – Provides flexibility for complex cable routing without sacrificing signal accuracy.

Advantages

• High Signal Integrity – Controlled impedance and low capacitance preserve the full bandwidth of proximity probe signals.

• Robust Mechanical Design – Armored, abrasion-resistant jacket protects against crushing, bending, and chemical exposure.

• Temperature Resilience – Wide operating and storage ranges enable use near hot machinery or in cold outdoor installations.

• Seamless Integration – Fully compatible with 3300 XL probes and Proximitor drivers for simple system assembly or replacement.

• Superior EMI Protection – Multi-layer shielding minimizes electromagnetic interference for dependable vibration diagnostics.

• Low Maintenance – Durable materials and secure connectors reduce inspection frequency and replacement costs.

FAQ

1. What is the characteristic impedance of this extension cable?

   It is designed for a nominal 50 Ω characteristic impedance to ensure impedance matching and minimal signal reflection.

2. How does the cable prevent electromagnetic interference?

   A coaxial construction with grounded braided shielding provides excellent rejection of external noise sources.

3. Is the cable specifically calibrated for use with 11 mm proximity probes?

   Yes, it is factory-matched for the 3300 XL 11 mm series to maintain system accuracy.

4. What type of connectors are provided on each end of the cable?

   Precision high-frequency coaxial connectors with environmental sealing for reliable attachment to probes and drivers.

5. Does installation require additional calibration?

   No, as long as the specified length is maintained, the cable is factory-calibrated and ready for use.

6. How is signal loss minimized over the full operating frequency range?

   Tight impedance control and low capacitance preserve high-frequency components of the vibration signal.

7. Can the cable withstand continuous mechanical vibration?

   Yes, the armored design ensures stable operation in areas of persistent vibration.

8. What is the dielectric material inside the cable?

   A low-loss PTFE-based dielectric maintains consistent electrical properties across temperature extremes.

9. How is moisture ingress prevented?

   The connectors include sealed gaskets and the jacket meets IP67 protection when properly installed.

10. Is the cable approved for use in hazardous or classified areas?

    Yes, when installed following Bently Nevada hazardous-area guidelines and paired with approved hardware.