Product Overview

The Bently Nevada 16699-03-02-02 is a precision 3300 XL 8mm Proximity Probe designed for non-contact measurement of shaft vibration and axial displacement. This probe utilizes eddy current technology to track the movement of rotating shafts without physical contact, providing essential data for the 3500 Machinery Protection System. Engineered for high-speed applications in turbines, compressors, and pumps, it translates physical distance into a stable voltage signal, allowing operators to detect mechanical wear or instability before catastrophic failure occurs.

Part Number Breakdown: 16699-AA-BB-CC

Bently Nevada uses a modular suffix system to define probe geometry and cable specifications:

• 16699-03 (Unthreaded/Thread Type): Indicates a 3/8-24 UNF English thread.

• -02 (Overall Case Length): Specifies a 20 mm (0.8 in) case length.

• -02 (Total Cable Length): Indicates a 0.2 meter (approx. 7.9 inches) cable length.

• Connector: Features a standard miniature coaxial connector for seamless integration with 3300 XL extension cables.

Technical Specifications

The 16699-03-02-02 meets rigorous industrial standards for linearity and thermal stability.

Engineering Advantages

• Precision Gap Control: The 3/8-24 UNF thread enables micro-adjustments during installation. This ensures the probe tip sits exactly within its linear range—crucial for maintaining a 200 mV/mil scale factor accuracy.

• Reduced Cable Clutter: The short 0.2m cable option (Option -02) solves the problem of "excess slack" inside narrow bearing housings. This prevents cable fatigue and minimizes electromagnetic interference (EMI) pickup within the machine casing.

• High-Temperature Resilience: The PPS (Polyphenylene Sulfide) tip and Tefzel® cable insulation withstand extreme operating temperatures up to +180 °C. This makes the probe suitable for use near steam turbine bearings and high-pressure compressor stages.

• Complete System Compatibility: The 16699-03-02-02 works interchangeably with all 3300 XL Proximitor® Sensors. This modularity simplifies spare parts inventory and ensures the sensor performs according to factory calibration without manual recalibration.

FAQs

Q: Is the 16699-03-02-02 supplied as 100% Brand New?

A: Yes. We supply only 100% Brand New and Original units in their original Bently Nevada factory-sealed packaging. Every probe includes a 12-month factory warranty against manufacturing defects.

Q: Can I use this probe with an older 3300 (non-XL) system?

A: While physical mounting is possible, we strongly recommend using the 3300 XL probe with a 3300 XL Proximitor. The XL series offers improved temperature stability and better linearity compared to legacy 3300 systems.

Q: What is the recommended gap setting for this 8mm probe?

A: For a standard 3300 XL 8mm system, the typical gap setting is approximately 1.27 mm (50 mils), which usually corresponds to a -10 VDC output from the Proximitor. Always verify the gap using a voltmeter during installation.

Q: How do I protect the coaxial connector inside the machine?

A: We recommend using Connector Protectors (Bently Nevada Part Number 40113-02) and silicone tape to prevent oil ingress or mechanical vibration from loosening the coaxial junction between the probe and the extension cable.