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Bently Nevada 330901-00-41-05-02-CN 3300 NSv Proximity Probe

The Bently Nevada 330901-00-41-05-02-CN, also cataloged as the 330901 3300 NSv Proximity Probe, operates as a dedicated hardware component for non-contact shaft displacement measurement within the 3300 NSv Proximity Transducer System.

Hardware Specifications

Parameter	Specification
Model	330901-00-41-05-02-CN
Brand	Bently Nevada
Origin	USA
Product Type	3300 NSv Proximity Probe
Transducer System	3300 NSv Proximity Transducer System
Sensing Method	Non-contact eddy current measurement
Scale Factor	7.87 V/mm (200 mV/mil) with matching 3300 NSv Proximitor Sensor
Thread Type	1/4-28 UNF
Unthreaded Length	0.0 in
Overall Case Length	4.1 in
Probe Cable Length	0.5 m (20 in)
Connector Type	Miniature coaxial ClickLoc connector
Construction Material	Stainless steel body with PPS probe tip
Weight	Approx. 350 g
Dimensions	4.1 in case length, 0.5 m cable length
Operating Temp	-51 deg C to +177 deg C
Power Consumption	Supplied through compatible 3300 NSv Proximitor Sensor
Target Application	Shafts smaller than 51 mm (2 in) or flat targets smaller than 15 mm (0.6 in)
Hazardous Area Certification	-CN configuration with applicable China hazardous area approvals

Eddy-Current Measurement and Rotor Dynamics Characteristics

The 330901-00-41-05-02-CN uses an eddy-current sensing principle to convert shaft displacement into an electrical signal. The 3300 NSv probe geometry directs the electromagnetic field toward the target surface and reduces side-view interference from surrounding metallic structures.

Furthermore, the probe supports rotor dynamics monitoring by providing stable vibration and axial position signals for machinery protection systems. The narrow side view design allows installation in restricted mechanical clearances where standard proximity probes may experience target distortion or signal interference.

The matched Proximitor Sensor applies eddy-current probe scaling at 7.87 V/mm (200 mV/mil). In addition, the system supports gap voltage validation procedures using the typical -10 VDC target reference for correct probe-to-target positioning.

Frequently Asked Questions

Q: What type of target does the 330901-00-41-05-02-CN measure?
A: The probe measures conductive shaft or target displacement through non-contact eddy-current technology. It is optimized for small diameter shafts and limited installation spaces.

Q: Can the 330901-00-41-05-02-CN operate without a Proximitor Sensor?
A: No. The probe requires a compatible 3300 NSv Proximitor Sensor to provide excitation, signal conditioning, and displacement output conversion.

Q: What installation factors affect measurement accuracy?
A: Proper probe gap setting, correct target material, cable routing, and avoidance of metallic interference near the sensing tip affect signal stability.

Field Installation Guidelines

Install the probe with the sensing tip aligned directly toward the measured shaft or target surface. Maintain the specified mechanical clearance to prevent side metal influence on the eddy-current field.

Connect the ClickLoc miniature coaxial connector securely and route the cable away from high-current power conductors to reduce electrical interference. Use proper cable shielding and grounding practices according to the machinery monitoring system installation requirements.

Before commissioning, verify the probe gap voltage and confirm the output signal from the connected Proximitor Sensor. Check the probe mounting thread engagement and ensure that mechanical vibration does not introduce movement at the probe mounting point.

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