330101-00-08-20-12-00 | Bently Nevada 8 mm Probe 3/8-24 UNF

Overview of the 330101-00-08-20-12-00 3300 XL 8 mm Probe

When machine reliability is non-negotiable, the 330101-00-08-20-12-00 from Bently Nevada delivers precise vibration measurements. This 3300 XL 8 mm probe features a 3/8-24 UNF thread and a 2.0 meter (6.6 feet) total length with a miniature coaxial ClickLoc connector and FluidLoc cable. Designed without armor, it is ideal for applications where oil leakage prevention and robust cable attachment are critical.

Key Features and Technical Specifications

• Probe Type: 3300 XL 8 mm probe, 3/8-24 UNF thread, without armor.
• Total Length: 2.0 meters (6.6 feet) with miniature coaxial ClickLoc connector and FluidLoc cable.
• Linear Range: 2 mm (80 mils), beginning at approximately 0.25 mm (10 mils) from target.
• Incremental Scale Factor (ISF): 7.87 V/mm (200 mV/mil) ±5% for standard 5 or 1 meter systems.
• Probe Tip Material: Polyphenylene sulfide (PPS) for enhanced durability.
• Probe Case Material: AISI 303 or 304 stainless steel (SST).
• Operating Temperature Range: -52°C to +177°C (-62°F to +350°F) for standard probe.
• Probe DC Resistance: 7.88 ± 0.50 Ω for 2.0 m probe length.

One standout feature is the patented TipLoc molding method, which creates a robust bond between the probe tip and body. Combined with the CableLoc design offering 330 N (75 lbf) pull strength, this probe withstands physical abuse while maintaining measurement accuracy.

Applications and Use Cases

In rotating machinery such as turbines, compressors, and pumps, the 330101-00-08-20-12-00 excels at radial vibration and position monitoring. Its 8 mm probe diameter provides a thicker PPS encapsulation, making it more rugged than smaller probes. The FluidLoc cable option prevents oil and other liquids from leaking out of the machine, a common pain point in industrial environments. For engineers seeking long-term reliability, this probe reduces unplanned downtime by delivering consistent performance over a wide temperature range.

Installation and Setup Guidance

When installing the 330101-00-08-20-12-00, ensure the recommended gap setting for radial vibration is -9 Vdc (approximately 1.27 mm or 50 mils). Field wiring should use 0.2 to 1.5 mm² (16 to 24 AWG) three-conductor shielded triad cable, with a maximum length of 305 meters (1,000 feet) between the Proximitor Sensor and the monitor. The miniature coaxial ClickLoc connector simplifies cable attachment, while the FluidLoc cable helps maintain a clean environment. Always follow the manufacturer's manual for proper mounting and torque specifications.

Maintenance and Reliability Tips

To maximize the service life of the 330101-00-08-20-12-00, inspect the probe and cable periodically for physical damage or wear. The stainless steel case and PPS tip resist corrosion and chemical exposure, but avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature pressure seal failure. Regular verification of the incremental scale factor ensures measurement accuracy remains within ±5% over the linear range. By following these simple steps, you can extend the operational life of the probe and reduce replacement costs.

Compatibility and Integration

The 330101-00-08-20-12-00 is designed for use with Bently Nevada 3300 XL Proximitor Sensors and compatible monitoring systems. It supports standard 5 or 1 meter system configurations, as well as 9 meter and extended temperature range systems. The probe’s output is a -1 to -17 Vdc signal over its linear range, making it straightforward to integrate with existing vibration monitoring setups. For systems requiring field wiring, the maximum cable length of 305 meters (1,000 feet) provides flexibility in large plant layouts.

Frequently Asked Questions

Q: What is the linear range of the 330101-00-08-20-12-00?

A: The linear range is 2 mm (80 mils), starting at approximately 0.25 mm (10 mils) from the target and extending to 2.3 mm (90 mils).

Q: What is the recommended gap setting for radial vibration?

A: The recommended gap setting is -9 Vdc, which corresponds to approximately 1.27 mm (50 mils).

Q: What is the operating temperature range for this probe?

A: For the standard probe, the operating and storage temperature range is -52°C to +177°C (-62°F to +350°F).

Q: What type of connector does the 330101-00-08-20-12-00 use?

A: It uses a miniature coaxial ClickLoc connector with FluidLoc cable.

Product Support and Availability

Petro Auto Tech stocks the 330101-00-08-20-12-00 Bently Nevada probe and is ready to ship. For current lifecycle status and ordering details, please contact our team. We provide genuine industrial automation parts to keep your operations running smoothly.