Bently Nevada 330703-000-060-10-02-00 3300 XL 11 mm Proximity Probe

The Bently Nevada 330703-000-060-10-02-00, 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 an eddy-current sensing principle to generate position-dependent voltage signals for rotor monitoring, shaft vibration analysis, and gap measurement functions.

Suffix Breakdown & Model Matrix

• 330703: 3300 XL 11 mm Proximity Probe

• 000: Unthreaded Length Option = 0 mm

• 060: Overall Case Length Option = 60 mm

• 10: Total Length Option = 1.0 m (3.3 ft)

• 02: Miniature coaxial ClickLoc connector with standard cable

• 00: Agency Approval Option = Not required

Hardware Specifications

Eddy-Current Probe Scaling and Gap Voltage Verification

The 3300 XL 11 mm probe is designed as part of a matched transducer assembly consisting of a probe, extension cable, and Proximitor sensor. The system provides a scale factor of 3.94 V/mm (100 mV/mil) and supports a linear measurement range of 4.0 mm, enabling displacement measurements beyond those typically associated with standard 8 mm transducer systems.

During installation and commissioning, gap voltage verification is used to confirm that the probe operates within the specified linear measurement zone. Correct positioning ensures that shaft movement is converted into proportional voltage signals suitable for vibration and position monitoring applications.

The non-contact measurement principle eliminates mechanical wear between the sensing element and the rotating target surface while supporting continuous rotor dynamic analysis.

Rotor Dynamics and Cross-Talk Suppression

The 3300 XL 11 mm platform is intended for continuous monitoring of rotor displacement, radial vibration, and mechanical position. The eddy-current transducer responds to conductive target movement without physical contact, supporting dynamic measurements throughout machine startup, operation, and shutdown sequences.

Proper routing of probe and extension cables assists in minimizing electromagnetic coupling between adjacent transducer channels. Maintaining separation from high-current power conductors helps preserve signal quality and supports stable shaft vibration measurements.

Frequently Asked Questions

Q: Can the probe operate without a Proximitor sensor?
A: No. The probe is designed to function as part of a complete 3300 XL transducer system consisting of a probe, extension cable, and compatible Proximitor sensor.

Q: What measurement range does the probe support?
A: The specified linear measurement range is 4.0 mm (160 mils), with a gap operating range of 0.5 mm to 4.5 mm.

Q: What materials are used in the probe construction?
A: The probe tip is manufactured from polyphenylene sulfide (PPS), and the probe case is constructed from AISI 304 stainless steel.

Field Installation Guidelines

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

• Confirm the M14 x 1.5 threaded mounting arrangement matches the machine bracket design.

• Route transducer cables separately from motor feeders, inverter output cables, and other high-current conductors.

• Avoid excessive cable bending, twisting, or tensile loading during installation.

• Check connector engagement and locking integrity before system energization.

• Follow plant shielding and grounding requirements for machinery monitoring systems.

• Perform gap voltage validation and channel functional testing before returning the machine to service.