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Bently Nevada 330104-00-08-50-12-00 3300 XL 8 mm Proximity Probe

The Bently Nevada 330104-00-08-50-12-00, also cataloged as the 330104 3300 XL 8 mm Proximity Probe, operates as a dedicated eddy-current measurement component for shaft displacement and vibration monitoring within the 3300 XL Transducer System.

Hardware Specifications

Parameter	Specification
Model	330104-00-08-50-12-00
Brand	Bently Nevada
Dimensions	Overall case length: 80 mm; total cable length: 5.0 m
Operating Temp	-51 deg C to +177 deg C
Power Consumption	Supplied through compatible Proximitor sensor system; probe is a passive sensing element
Product Series	3300 XL 8 mm Proximity Transducer System
Probe Diameter	8 mm
Thread Type	M10 x 1 metric thread
Unthreaded Length	00 option; fully threaded case
Case Material	AISI 303 or 304 stainless steel
Tip Material	Polyphenylene Sulfide (PPS)
Cable Type	FluidLoc cable with flexible stainless steel armor
Connector Type	Miniature coaxial ClickLoc connector
Linear Range	2 mm (80 mils)
Scale Factor	7.87 V/mm (200 mV/mil) nominal
Pressure Seal	Viton O-ring between probe tip and case
Agency Approval	Standard configuration; no agency approval option

Eddy-Current Measurement and Rotor Dynamics Characteristics

The 330104-00-08-50-12-00 uses an eddy-current sensing principle to measure shaft position changes without mechanical contact. Therefore, the probe provides proportional output changes according to the target surface displacement relative to the probe tip.

The 3300 XL system applies calibrated eddy-current probe scaling with a nominal scale factor of 7.87 V/mm (200 mV/mil). In addition, the measurement circuit supports gap voltage validation by maintaining probe operating conditions around the standard -10 VDC target range used for Bently Nevada proximity monitoring systems.

The armored FluidLoc cable construction reduces mechanical damage risks during installation. Furthermore, the ClickLoc connector provides a controlled coaxial connection path to maintain signal integrity in rotating machinery monitoring applications.

The probe configuration supports rotor dynamics analysis by providing displacement feedback for vibration amplitude, shaft position, and mechanical movement evaluation. The sensor installation should maintain proper probe orientation and cable routing to reduce external interference and signal distortion.

Frequently Asked Questions

Q: What measurement principle does the 330104-00-08-50-12-00 use?
A: The probe uses eddy-current technology to measure shaft displacement and vibration through a non-contact electromagnetic field.

Q: Can the probe be directly connected to a monitoring system input?
A: No. The probe requires a compatible 3300 XL Proximitor sensor module to generate the conditioned monitoring signal.

Q: Does the armored cable affect probe installation requirements?
A: The armored cable improves mechanical protection, but installers must still maintain proper routing, grounding, and separation from high-noise electrical conductors.

Field Installation Guidelines

• Install the M10 x 1 threaded probe into the prepared mounting location using the specified mechanical interface.
• Verify probe tip clearance and target surface condition before commissioning the measurement loop.
• Maintain cable routing practices that separate the probe cable from high-current power wiring and electromagnetic noise sources.
• Connect the miniature coaxial ClickLoc connector securely to maintain signal continuity.
• Verify the operating gap voltage after installation. The standard Bently Nevada commissioning practice uses gap voltage checks near the -10 VDC target range.
• Ensure the stainless steel armor does not create unintended mechanical stress at the connector or probe body.
• Confirm the probe output response with the associated Proximitor module before placing the machinery protection channel into service.

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