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Bently Nevada 165844-14 3300 XL 8mm Proximity Probe

The Bently Nevada 165844-14, also cataloged as the 165844-14 Proximity Probe, operates as a dedicated hardware component for shaft displacement measurement within the 3300 XL 8 mm Proximity Transducer System.

Hardware Specifications

Parameter	Specification
Model	165844-14
Brand	Bently Nevada (Baker Hughes)
Product Type	Eddy Current Proximity Sensors
Series	3300 XL 8 mm Proximity Transducer System
Operating Principle	Eddy current sensing technology
Scale Factor / Sensitivity	7.87 V/mm (200 mV/mil)
Frequency Response	0 to 10 kHz
Integrated Cable Length	1.4 m
Tip Material	Polyphenylene Sulfide (PPS)
Output Interface	Analog voltage proportional to probe gap
System Compatibility	3300 XL Proximitor sensors with matching extension cables
Origin	USA
Weight	Approximately 0.3 kg to 0.8 kg depending on mounting assembly
Operating Temp	-35 deg C to +85 deg C
Power Consumption	Passive probe element; powered through connected Proximitor sensor

Eddy Current Probe Scaling and Rotor Dynamics Monitoring

The 165844-14 uses eddy current probe scaling to convert shaft displacement changes into proportional electrical signals. Moreover, the probe maintains a nominal sensitivity of 200 mV/mil for compatibility with the 3300 XL monitoring architecture.

The sensor detects dynamic shaft movement without mechanical contact. Therefore, it supports rotor dynamics analysis by providing continuous displacement information for vibration monitoring, axial position measurement, and mechanical clearance evaluation.

In addition, the probe design incorporates signal conditioning characteristics that support cross-talk suppression when installed with adjacent proximity measurement channels. The PPS probe tip material maintains electrical stability under exposure to industrial lubricants and operating environments.

Frequently Asked Questions

Q: Does the 165844-14 require direct electrical power at the probe tip?
A: No. The proximity probe receives excitation through the connected 3300 XL Proximitor sensor. The probe itself functions as a passive eddy current sensing element.

Q: What type of measurement signal does the 165844-14 provide?
A: The probe provides a voltage output proportional to the physical gap between the probe tip and the rotating shaft target surface through the connected signal conditioning module.

Q: Can the 165844-14 measure shaft vibration without physical contact?
A: Yes. The probe measures shaft displacement through an electromagnetic eddy current field and maintains a non-contact sensing distance during operation.

Field Installation Guidelines

Install the 165844-14 with the probe tip aligned toward the conductive shaft target surface according to the 3300 XL system installation requirements.

Maintain proper cable routing practices to reduce electromagnetic interference. Furthermore, separate probe cables from high-current power conductors and use appropriate grounding methods at the monitoring system side.

Verify the probe gap voltage during commissioning to confirm correct mechanical positioning. For Bently Nevada proximity systems, technicians commonly validate the operating gap near the -10 VDC target value when configuring the Proximitor measurement loop.

Inspect the integrated cable and connector interface before installation. Avoid sharp bending, excessive mechanical stress, or contact with moving machine components.

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