Configured for signal transmission in 3300 XL proximity monitoring systems, the Bently Nevada 330854-080-25-00 (330854-080-25-00 Extension Cable) provides direct physical/electrical execution for connecting probes to remote Proximitor sensors.

Part Number Configuration

The 330854 extension cable is designed to maintain the impedance matching requirements of the 3300 XL system. The specific ordering configuration is:

• 080: Cable length (8.0 meters).

• 25: Connector/Cable configuration (Standard).

• 00: Agency approval (None).

Hardware Specifications

Mechanical Monitoring & TSI Technical Attributes

The 330854 cable ensures signal integrity between the transducer and the Proximitor. In machinery protection applications, this cable is calibrated as part of the total probe-cable-Proximitor system, where eddy-current probe scaling is maintained across the entire loop. Correct installation is necessary to prevent signal distortion; specifically, the cable must be routed to avoid electromagnetic interference that could affect gap voltage validation (-10 VDC targets). Proper cable management contributes to cross-talk suppression by preventing capacitive coupling between parallel signal loops in the machinery housing.

Ordering info

• 1 x 330854-080-25-00 Extension Cable

• 2 x Connector protective boots

• 1 x Technical installation instruction sheet

Field Installation Guidelines

• Cable Routing:

  Maintain a minimum bend radius of 25 mm to prevent stress on the coaxial center conductor. Avoid routing near high-current motor leads or VFD cabling.

• Connector Seating:

  Ensure ClickLoc connectors are fully engaged. A tactile and audible click confirms the mechanical lock and electrical continuity.

• Grounding:

  The cable shield must remain isolated from the machine housing unless the specific application design mandates a single-point ground connection at the junction box.

• Environmental Protection:

  Use the provided connector boots to seal interfaces against moisture and oil ingress in the terminal housing.

Frequently Asked Questions

• Can I splice this cable if it is too long?

  No. Splicing or cutting the coaxial cable alters the characteristic impedance, which invalidates the system calibration and accuracy of the rotor dynamics data.

• Is this cable compatible with 3300 NSv systems?

  No. The 330854 extension cable is specific to the 3300 XL system and uses different impedance characteristics than the NSv-specific cables.

• What is the impact of excessive cable length?

  The total system length (probe + extension cable) is strictly calibrated. Exceeding specified length limits will cause signal attenuation and calibration errors.

• Can I use this cable in high-temperature zones?

  The cable is rated for operation up to +177 deg C. Ensure the routing path does not expose the cable to temperatures exceeding this limit.

• Are the connectors waterproof?

  The connectors are designed for industrial use with protective boots. They are not intended for direct immersion in liquid.

• How do I identify a faulty extension cable?

  Use a digital multimeter to verify continuity and check for high resistance or shorts between the center conductor and the shield.

• Does this cable require a specific mounting orientation?

  No, the cable is flexible, but it must be secured using appropriate cable ties to prevent fatigue caused by machine vibration.

• Is the 330854 cable agency-rated?

  The -00 suffix indicates no hazardous area approvals. Always verify the site safety requirements before installation in explosive atmospheres.