Description

Bently Nevada 330904-04-14-05-02-00 3300 XL NSv Proximity Probe

The Bently Nevada 330904-04-14-05-02-00, also cataloged as the 330904 3300 XL NSv Proximity Probe, operates as a dedicated hardware component for non-contact shaft displacement measurement and vibration monitoring within Bently Nevada TSI monitoring systems.

Hardware Specifications

Parameter	Specification
Model	330904-04-14-05-02-00
Brand	Bently Nevada
Product Type	Proximity Sensors
Series	3300 XL NSv Proximity Probe
Origin	USA
Dimensions	40 mm unthreaded length, 140 mm overall case length, 0.5 m cable length
Operating Temp	-52 deg C to +177 deg C
Power Consumption	Supplied by compatible Bently Nevada Proximitor sensor system
Linear Range	1.5 mm (60 mils)
Average Scale Factor	7.87 V/mm (200 mV/mil)
Linearity Deviation	Less than or equal to +/- 0.06 mm (+/- 2.3 mils) from best fit straight line
Frequency Response	0 Hz to 10 kHz (+0, -3 dB)
Probe Tip Material	Polyphenylene sulfide (PPS)
Probe Body Material	300 series stainless steel
Cable Type	75 ohm coaxial cable with FEP insulation
Connector Type	Miniature coaxial ClickLoc connector
Target Diameter Requirement	Minimum 8.9 mm (0.35 inch) flat target

Eddy-Current Scaling and Rotor Dynamics Measurement

The 3300 XL NSv proximity probe uses eddy-current technology to convert shaft movement into proportional electrical signals. The probe maintains a defined scale factor of 7.87 V/mm, which allows the connected Proximitor sensor to calculate shaft displacement and vibration values.

Additionally, the NSv probe design supports rotor dynamics analysis by providing stable gap voltage behavior and repeatable displacement output. The measurement chain validates the probe operating gap through the negative DC gap voltage range, including standard Bently Nevada -10 VDC target conditions for proper probe calibration.

The narrow side-view construction reduces installation interference in applications with restricted mounting space. Furthermore, the probe supports vibration monitoring, radial position measurement, Keyphasor reference signals, and zero-speed detection functions when integrated with compatible monitoring hardware.

Frequently Asked Questions

Q: Can the 330904-04-14-05-02-00 probe operate without a compatible Proximitor sensor?
A: No. The probe requires a compatible Bently Nevada Proximitor sensor to provide excitation, signal conditioning, and displacement output conversion.

Q: What installation factors affect measurement accuracy?
A: Proper probe gap adjustment, target surface condition, cable routing, and electromagnetic noise control affect the accuracy of eddy-current measurement.

Q: Does the NSv probe require recalibration when replacing another 3300 XL NSv component?
A: The 3300 XL NSv probe maintains interchangeability with compatible 3300 XL NSv system components when installed according to Bently Nevada configuration requirements.

Field Installation Guidelines

• Install the probe perpendicular to the monitored shaft target surface to maintain correct eddy-current measurement geometry.
• Adjust the probe gap according to the connected Proximitor sensor calibration requirements and verify the operating gap voltage.
• Route the coaxial cable away from high-current power cables and strong electromagnetic interference sources.
• Maintain proper cable shielding practices and connect grounding according to the monitoring system installation manual.
• Inspect the target surface condition before commissioning because scratches, uneven surfaces, or contamination can influence displacement measurement.
• Secure the ClickLoc connector connection to prevent signal interruption caused by mechanical vibration.

Specifications

• Brand: Bently Nevada

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems