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Bently Nevada 330709-000-050-50-02-00 3300 XL 11 mm Proximity Probe

The Bently Nevada 330709-000-050-50-02-00, also cataloged as the 330709 3300 XL 11 mm Proximity Probe, operates as a dedicated hardware component for shaft displacement and vibration measurement within 3300 XL Proximity Transducer System installations.

Hardware Specifications

Parameter	Specification
Model	330709-000-050-50-02-00
Brand	Bently Nevada
Product Series	3300 XL 11 mm Proximity Probe
Product Type	Eddy Current Proximity Sensor
Origin	USA
Weight	Approx. 0.2 kg
Dimensions	50 mm case length, 5.0 m total system length
Operating Temp	-35 deg C to +177 deg C
Power Consumption	Powered by compatible 3300 XL Proximitor Sensor module
Measurement Principle	Eddy current non-contact displacement measurement
Probe Tip Diameter	11 mm
Thread Size	M16 x 1.5 metric thread
Linear Range	4.0 mm
Average Scale Factor	3.94 V/mm (100 mV/mil) +/- 5%
Frequency Response	0 Hz to 8 kHz (+0 dB, -3 dB)
Cable Type	75 ohm coaxial cable with FEP insulation
Cable Length	5.0 meters (16.4 feet)
Connector Type	Miniature coaxial ClickLoc connector
Case Material	AISI 304 stainless steel
Probe Tip Material	Polyphenylene sulfide (PPS)
Pressure Resistance	Up to 34 bar differential pressure at probe tip sealing interface

Eddy Current Measurement and Rotor Dynamics Characteristics

The 330709-000-050-50-02-00 uses eddy-current probe scaling to convert shaft target movement into proportional electrical output signals. The probe operates with a 3300 XL Proximitor Sensor to provide a calibrated displacement signal for vibration monitoring and shaft position analysis.

The system uses gap voltage validation methods with typical -10 VDC target gap settings to confirm probe installation condition and measurement range. Therefore, technicians can verify mechanical clearance before commissioning rotating equipment monitoring loops.

Furthermore, the 11 mm probe geometry supports rotor dynamics analysis by providing displacement measurements required for shaft orbit monitoring, axial position detection, and Keyphasor speed reference applications. The probe design also minimizes signal distortion during dynamic shaft movement.

Frequently Asked Questions

Q: What measurement signals does the Bently Nevada 330709-000-050-50-02-00 provide?
A: The probe provides eddy-current displacement signals for radial vibration, axial position, differential expansion, and speed reference measurement when paired with a compatible 3300 XL Proximitor Sensor.

Q: Can this probe operate without a 3300 XL Proximitor Sensor?
A: No. The probe requires a compatible Proximitor Sensor to supply excitation power, process the eddy-current signal, and output the conditioned measurement signal.

Q: What installation factors affect measurement accuracy?
A: Probe gap setting, target material condition, cable routing, connector integrity, and proper shielding practices directly affect signal stability and measurement accuracy.

Field Installation Guidelines

Install the probe with the M16 x 1.5 threaded mounting interface according to the mechanical drawing requirements of the machine assembly.

Maintain correct probe-to-shaft target spacing during installation. Verify the gap voltage after mounting to confirm that the probe operates within the calibrated measurement range.

Route the coaxial cable away from high-current power conductors and strong electromagnetic interference sources. Avoid sharp cable bends and mechanical stress at the ClickLoc connector area.

Connect the cable shield according to the system grounding design. Improper grounding practices may introduce electrical noise into the vibration monitoring circuit.

Before operation, confirm probe polarity, cable connection integrity, Proximitor Sensor compatibility, and channel configuration within the monitoring system.

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