Bently Nevada 330730-040-00-00 3300 XL 11 mm Extension Cable

Configured for signal transmission between proximity probes and Proximitor sensors in Bently Nevada machinery monitoring systems, the Bently Nevada 330730-040-00-00 (330730 3300 XL 11 mm Extension Cable) provides direct electrical interconnection within the 3300 XL 11 mm transducer architecture. The cable forms part of a calibrated eddy-current measurement system and maintains the signal characteristics required for shaft vibration, position, and gap monitoring functions.

Suffix Breakdown & Model Matrix

• Cable Length Option: 040 = 4.0 m (13.1 ft)

• Connector and Cable Option: 00 = Standard cable

• Agency Approval Option: 00 = Not required

Hardware Specifications

Eddy-Current Signal Integrity and System Calibration

The 330730 extension cable is engineered for operation as part of the 3300 XL 11 mm transducer assembly consisting of a proximity probe, extension cable, and Proximitor sensor. The electrical characteristics of the cable contribute directly to overall transducer calibration and measurement accuracy.

System performance depends on maintaining the specified cable length and compatible transducer components. Substitution with incorrect cable configurations may alter system scaling, linearity, and gap voltage characteristics.

The extension cable transfers high-frequency eddy-current signals between the sensing probe and Proximitor sensor while preserving the electrical parameters required for displacement and vibration measurements.

Cross-Talk Suppression and Rotor Monitoring Applications

The cable assembly supports monitoring functions including shaft vibration, shaft position, and gap measurement. Proper cable routing reduces susceptibility to electromagnetic interference and signal coupling between adjacent transducer channels.

The specified transducer system is designed for operation with targets having a minimum flat target diameter of 30.5 mm (1.2 in), supporting reliable eddy-current field development across the calibrated measurement range.

Maintaining proper separation from motor feeders, inverter outputs, and high-current conductors assists in preserving signal quality during machinery operation.

Frequently Asked Questions

Q: Can the extension cable be shortened in the field?
A: Field modification is not recommended because cable length is part of the calibrated transducer system configuration.

Q: Does the cable perform signal conditioning or amplification?
A: No. The extension cable is a passive component that transmits signals between the proximity probe and Proximitor sensor.

Q: Is the extension cable interchangeable with other 3300 XL cable lengths?
A: Cable substitution should only be performed with compatible transducer configurations approved for the installed proximity measurement system.

Field Installation Guidelines

• Verify cable length and transducer compatibility before installation.

• Inspect connectors and cable insulation for mechanical damage prior to use.

• Route extension cables separately from high-voltage and high-current wiring.

• Avoid sharp bends, compression, and excessive tensile loading.

• Secure cable runs to prevent vibration-induced movement.

• Follow plant shielding and grounding standards for proximity transducer systems.

• Perform channel verification and gap voltage validation after installation.