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Bently Nevada 330703-000-100-10-02-CN 3300 XL 11 mm Proximity Probe

The Bently Nevada 330703-000-100-10-02-CN, also cataloged as the 330703 3300 XL 11 mm Proximity Probe, operates as a dedicated hardware component for eddy-current displacement measurement and rotor position monitoring within Bently Nevada 3300 XL Transducer System platforms.

Suffix Breakdown & Model Matrix

Code Segment	Specification
Base Model	330703
Probe Series	3300 XL 11 mm Proximity Probe
Thread Configuration	M14 x 1.5 metric thread
Unthreaded Length	0 mm
Case Length	100 mm
Cable Length	1.0 meter
Cable Type	Standard unarmored cable
Connector Type	Miniature coaxial ClickLoc connector
Approval Code	CN country-specific approval

Hardware Specifications

Parameter	Specification
Model	330703-000-100-10-02-CN
Brand	Bently Nevada
Origin	USA
Dimensions	11 mm probe tip diameter, 100 mm case length
Operating Temp	Probe: -52 deg C to +177 deg C; System: -51 deg C to +177 deg C
Power Consumption	Supplied through compatible Proximitor Sensor system
Product Type	3300 XL 11 mm Proximity Probe
Measurement Principle	Eddy-current non-contact displacement measurement
Linear Range	4.0 mm nominal
Scale Factor	3.94 V/mm (100 mV/mil)
Frequency Response	0 Hz to 8.0 kHz (+0, -3 dB)
Target Material	4140 Steel calibration target
Cable Impedance	75 ohm triaxial cable
Probe Tip Material	Polyphenylene sulfide (PPS)
Probe Case Material	300-series stainless steel
Relative Humidity	100% condensing, non-submerged
Mounting Torque	Recommended 21.1 N m, maximum 63.3 N m

Eddy-Current Measurement and Rotor Dynamics

The 3300 XL 11 mm probe uses eddy-current sensing technology to convert shaft displacement into proportional electrical output signals. Therefore, the probe provides continuous gap measurement feedback for machinery monitoring applications.

The 11 mm sensing tip provides a 4.0 mm linear measurement range and supports axial position, differential expansion, rod position, speed, and phase reference measurements. Additionally, the system uses calibrated scaling characteristics to maintain measurement accuracy between the probe, extension cable, and Proximitor Sensor.

The probe installation requires gap voltage validation during commissioning. Bently Nevada systems typically verify probe operation using gap voltage targets near -10 VDC to confirm correct mechanical positioning and electrical output conditions.

Frequently Asked Questions

Q: What measurement signals can the Bently Nevada 330703-000-100-10-02-CN provide?
A: The probe provides non-contact displacement signals for axial position, differential expansion, rod position, Keyphasor phase reference, and speed measurement applications.

Q: Does the 330703 probe require direct contact with the monitored shaft?
A: No. The probe operates through eddy-current technology and measures shaft position without mechanical contact.

Q: What installation factors affect measurement accuracy?
A: Proper probe gap setting, target material compatibility, cable connection integrity, and correct shield grounding affect signal stability and measurement performance.

Field Installation Guidelines

• Install the probe using the specified M14 x 1.5 metric mounting thread and verify mechanical alignment before operation.
• Adjust probe position according to the required electrical gap range and validate the output gap voltage during commissioning.
• Connect the ClickLoc miniature coaxial connector securely to the compatible Proximitor Sensor input.
• Maintain separation between probe cables and high-voltage power conductors to reduce electromagnetic interference.
• Ground cable shields according to the monitoring system installation requirements and avoid multiple grounding points.
• Inspect the PPS probe tip and stainless steel housing for mechanical damage before installation.

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