Bently Nevada 330101-00-18-10-12-00 3300 XL 8 mm Proximity Probe

Description

The Bently Nevada 330101-00-18-10-12-00 is an unarmored 8 mm proximity probe belonging to the 3300 XL 8 mm Proximity Transducer System. This specific configuration features an unthreaded length of 0.0 inches (fully threaded), an overall case length of 1.8 inches, and a total length of 1.0 meter (3.3 feet). It is equipped with a miniature coaxial ClickLoc connector and is designed with a specialty FluidLoc cable (Option 12), which provides robust oil and moisture sealing along the cable length to prevent fluid migration. This variant is ordered without hazardous area agency approvals (Option 00), offering a specialized, cost-effective solution for non-hazardous heavy industrial machinery applications.

Using the physical principle of eddy-current measurement, the probe enables continuous, non-contact measurement of static (shaft position) and dynamic (shaft vibration) displacement. It is ideal for monitoring radial vibration, axial position, and keyphasor reference inputs on high-speed rotating machinery like steam turbines, gas turbines, compressors, and large pumps, ensuring critical machinery protection and preventing costly unplanned outages.

Features

• Featuring an 8 mm tip diameter for standard high-resolution eddy-current displacement measurement
• Specially designed with FluidLoc cable (Option 12) that prevents oil, moisture, or gas leakage through the internal strands of the cable
• Fully threaded case (0.0 in unthreaded length) with a 1.8 in overall case length utilizing a 3/8-24 UNF thread design without armor
• Equipped with a miniature gold-plated ClickLoc coaxial connector for low-attenuation signal transmission
• Provides dependable non-contact vibration and shaft position measurements in critical rotating machinery
• Sealed differential pressure barrier between the probe tip and case using a Viton O-ring

Applications

The Bently Nevada 330101-00-18-10-12-00 is primarily utilized in heavy industrial environments where monitoring rotating machinery shafts is essential and fluid leakage through cabling must be prevented. Typical applications include:

• Steam turbine and gas turbine shaft vibration monitoring and axial displacement tracking
• Compressor and high-pressure pump rotor displacement measurement
• Fluid-film bearing performance monitoring in power plants and petrochemical facilities
• Industrial machinery where oil-mist or cooling liquids are present and could migrate along standard cables
• General-purpose rotating machine protection systems where hazardous area certifications are not required

Ordering Information

Technical Specifications

Installation Guidelines

To ensure high measurement accuracy and long-term reliability when installing the Bently Nevada 330101-00-18-10-12-00 proximity probe, follow these engineering recommendations:

• Mount the probe with the appropriate probe gap as specified during system calibration (typically around 1.27 mm or 50 mils for a 200 mV/mil system) against an AISI 4140 steel target.
• Ensure that probe case thread engagement does not exceed 0.563 inches (14.3 mm) to avoid binding during installation.
• Always route the probe cable using proper shielding, mechanical protective conduits, and ground them correctly at the monitor end in accordance with local vibration monitoring installation standards.
• Do not expose the probe's pressure-sealing Viton O-ring to temperatures below -34 degC (-30 degF), as extreme cold can cause sealing integrity loss.