
The Bently Nevada 3300 XL 8mm Proximity Transducer system is a standard measurement solution for rotating machinery monitoring across turbines, compressors, pumps, motors, fans, and gearboxes. Amikon stocks probes, extension cables, and Proximitor Sensors to support active installations and urgent replacement needs.
The system uses eddy-current technology to detect gap changes between the probe tip and a conductive shaft surface without physical contact. This non-contact principle makes it reliable for continuous operation in demanding industrial environments.
The complete measurement chain consists of three matched components:
All three components must be compatible with the required system configuration. Probe type, extension cable length, total system length, Proximitor Sensor specification, connector style, and temperature or approval requirements should be confirmed before replacement. Using components with incorrect system length or incompatible specifications can introduce measurement error and compromise system accuracy.
The 8mm probe diameter is a common OEM specification across steam turbines, gas turbines, centrifugal compressors, pumps, industrial fans, gearboxes, and generators. This is why the series appears extensively in installed base inventories across power generation, oil and gas, and petrochemical facilities.
The transducer system integrates with:
Signal compatibility between the transducer output and the monitor input card must be confirmed, particularly when replacing components across different generations of the platform.
Some older, special, or less common configurations in this series may now be end-of-life, superseded, or difficult to source through standard channels. Amikon sources these parts through surplus stock and global procurement channels. Representative part numbers available for inquiry include 330101-00-52-05-01-05, 330180-X1-05 MOD 161255-02, and 330104-01-04-15-02-05, among others.
Replacing a failed probe or Proximitor Sensor within the existing system is faster and lower in cost than upgrading the entire monitoring rack. The part number must match the original specification exactly. Cable length, system length, temperature class, connector option, and Proximitor Sensor specification can all affect compatibility and measurement accuracy.
Before replacement, confirm the full part number, cable length, thread type, connector option, temperature rating, approval code, and required system length. The replacement probe must be compatible with the installed extension cable and Proximitor Sensor.
The part number identifies key probe configurations, including probe style, thread type, case length, cable length, connector option, temperature rating, and approval code. These details determine whether the probe fits the existing installation.
These probe series differ mainly in mechanical construction, thread configuration, mounting style, and cable or connector arrangement. The correct choice depends on the bearing housing design and the original machinery specification.

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