330101-00-20-90-02-RU 3300 XL 8 mm Proximity Probe Bently Nevada

The Bently Nevada 330101-00-20-90-02-RU, also cataloged as the 330101 3300 XL 8 mm Proximity Probe, operates as a dedicated sensing component for non-contact shaft displacement measurement within Bently Nevada 3300 XL machinery monitoring systems. The probe uses an eddy-current sensing principle and includes a 3/8-24 UNF threaded body with armor. This configuration provides a 9.0 m system cable arrangement with a Miniature Coaxial ClickLoc connector.

Suffix Breakdown & Model Matrix

Hardware Specifications

Eddy-Current Probe Scaling and Gap Voltage Validation

The 330101-00-20-90-02-RU operates as part of an eddy-current proximity measurement system. The probe, extension cable, and Proximitor sensor must maintain the specified system configuration to preserve probe scaling characteristics.

During installation, technicians should validate the mechanical target condition and probe gap voltage according to the applicable Bently Nevada system procedure. A typical machinery monitoring setup uses gap voltage information, including nominal -10 VDC target conditions where applicable, to verify the installed probe position.

Correct probe positioning also supports rotor dynamics measurement by maintaining the required sensing range and reducing measurement errors caused by improper mechanical clearance. In addition, armored cable routing should separate the probe signal path from high-current conductors to reduce external electrical interference and cross-talk.

Frequently Asked Questions

Q: Can the 330101-00-20-90-02-RU probe operate as a standalone sensor?
A: No separate standalone measurement output is specified. The probe operates as part of a compatible Bently Nevada proximity measurement system with the corresponding signal conditioning components.

Q: What mechanical mounting thread does this probe use?
A: The probe uses a 3/8-24 UNF threaded body. The installation must maintain correct thread engagement and mechanical alignment with the monitored target.

Q: Does the 330101-00-20-90-02-RU require a separate electrical power connection?
A: The provided data does not specify separate probe power consumption. The probe functions with the associated proximity measurement system and its signal conditioning hardware.

Field Installation Guidelines

Install the 330101-00-20-90-02-RU in a clean mounting location with sufficient clearance for the probe body, armored cable, and connector assembly.

Verify the 3/8-24 UNF mounting thread before installation. Do not force the probe into damaged or contaminated threads. Maintain correct mechanical alignment between the probe tip and the monitored shaft or target surface.

Route the armored cable away from high-current power wiring, motor leads, and switching devices. Maintain separation between low-level probe signals and electrical noise sources.

Avoid sharp cable bends, excessive pulling force, and mechanical stress on the ClickLoc connector. Secure the cable so machine vibration does not transfer unnecessary force to the connector or probe body.

After installation, perform system-level gap voltage validation according to the applicable Bently Nevada machinery monitoring procedure. Confirm that the target material, surface condition, probe gap, cable configuration, and signal conditioning components match the approved system configuration.