Bently Nevada 330703-000-050-10-11-00 3300 XL 11 mm Proximity Probe

The Bently Nevada 330703-000-050-10-11-00, also cataloged as the 330703 3300 XL 11 mm Proximity Probe, operates as a dedicated hardware component for non-contact shaft displacement and vibration measurement within Bently Nevada 3300 XL transducer systems. The probe utilizes eddy-current sensing technology to generate electrical signals proportional to conductive target movement and is configured for extended measurement range applications in rotating machinery monitoring.

Suffix Breakdown & Model Matrix

• 330703: 3300 XL 11 mm Proximity Probe

• 000: Unthreaded length option, 0 mm

• 050: Overall case length option, 50 mm

• 10: Total cable length option, 1.0 m

• 11: ClickLoc connector and cable configuration

• 00: Standard agency approval option

Hardware Specifications

Eddy-Current Probe Scaling and Gap Voltage Validation

The 3300 XL 11 mm probe is designed for operation as part of a calibrated transducer assembly consisting of a proximity probe, extension cable, and Proximitor sensor. System performance depends on maintaining the specified component combination and cable configuration.

The probe provides a scale factor of 3.94 V/mm (100 mV/mil) and supports a 4.0 mm linear measurement range, which is greater than that of standard 8 mm proximity transducer systems. This extended linear range supports applications requiring increased shaft motion measurement capability.

During commissioning, gap voltage validation is commonly performed to confirm proper probe-to-target spacing. Correct gap positioning allows the eddy-current system to operate within its calibrated measurement range and supports accurate rotor dynamic data acquisition.

Frequently Asked Questions

Q: Can the probe operate as a standalone sensor?
A: No. The probe is intended to operate with a compatible extension cable and Proximitor sensor as a complete transducer system.

Q: What is the benefit of the 11 mm probe design?
A: The 11 mm system provides an extended 4.0 mm linear measurement range, allowing greater displacement measurement capability than standard 8 mm systems.

Q: Does the probe physically contact the rotating shaft?
A: No. The probe utilizes a non-contact eddy-current sensing principle and maintains a controlled gap from the target surface.

Field Installation Guidelines

• Verify probe, extension cable, and Proximitor sensor compatibility before installation.

• Confirm the specified 1.0 m cable configuration matches the installed transducer system.

• Route proximity probe cables separately from motor feeders and high-current conductors.

• Avoid excessive bending, twisting, or pulling forces on the cable assembly.

• Ensure the probe mounting arrangement provides stable positioning relative to the shaft surface.

• Apply shielding and grounding practices according to plant instrumentation standards.

• Perform gap voltage verification and channel functional testing before returning equipment to service.