Description

The Bently Nevada 330101-00-40-10-01-05 is a high-precision, unarmored 3300 XL 8 mm proximity probe designed to perform continuous, non-contact shaft vibration and displacement measurements on critical industrial rotating machinery. This specific variant features a fully threaded 3/8-24 UNF body with a 0.0-inch unthreaded length and a 4.0-inch overall case length. Equipped with a 1.0-meter (3.3 feet) standard unarmored cable, it is terminated with a miniature coaxial ClickLoc connector and an integrated connector protector. This pre-installed protector provides a robust environmental seal at the junction, safeguarding the electrical connection against oil, moisture, and particulate contamination without requiring external conduit shielding.

As part of the Bently Nevada 3300 XL monitoring chain, this probe works seamlessly with a companion Proximitor sensor and extension cable to deliver highly accurate displacement signals. With its 05 agency approval configuration, this probe meets stringent global hazardous area standards, including CSA, ATEX, and IECEx approvals. This makes it an ideal fit for demanding environments like petrochemical installations, power plants, and gas turbine facilities where explosion-proof machinery protection is a strict operational mandate.

Features

• Standard 3/8-24 UNF threaded stainless steel body with a 4.0-inch case length and 0.0-inch unthreaded length (fully threaded case).
• Includes a factory-installed ClickLoc connector protector that acts as an environmental seal for the miniature coaxial connector.
• 1.0-meter (3.3 feet) standard unarmored cable engineered for stable signal transmission and minimal electrical loss.
• Rugged tip construction using advanced polyphenylene sulfide (PPS) to withstand harsh process media and extreme pressure differentials.
• Interchangeable within the Bently Nevada 3300 XL 8 mm proximity transducer series.
• Intrinsically safe and non-sparking certifications for deployment in hazardous areas worldwide.

Applications

This 3300 XL 8 mm proximity probe configuration is commonly deployed in critical rotating machinery protection schemes, including:

• Turbine shaft vibration and radial position monitoring in steam and gas turbines.
• Rotor axial displacement tracking in high-pressure industrial compressors.
• Oil film thickness and bearing wear measurement in heavy-duty pumps and generators.
• Machinery diagnostics and predictive maintenance in petrochemical, mining, and power generation sectors.

Ordering Information

Technical Specifications

Installation Guidelines

To secure precision measurements and prolong the system lifespan, the following industrial practices must be executed:

• Probe Calibration and Gapping: Set the initial mechanical gap using a digital voltmeter linked to the Proximitor sensor output. For standard AISI 4140 steel calibration, the gap is typically set to 1.27 mm (50 mils), which corresponds to -10 Vdc output at the nominal midpoint of the linear range.
• Thread Limits: Ensure that thread engagement does not exceed 0.563 inches (14.3 mm) during assembly to prevent thread damage or binding within the housing.
• Connector Protection: Maintain a hand-tight coaxial connection. The factory-provided connector protector must be properly seated over the joint to guarantee a water-tight, oil-resistant seal against localized industrial spray.
• Cable Shielding: Properly ground and shield probe cables to minimize electrical interference. Avoid routing proximity sensor lines close or parallel to high-current power cables.

Compliance and Certifications

This proximity probe is designed and certified to comply with international hazardous area requirements:

• CSA: Approved for Division 1 and Division 2 hazardous locations.
• ATEX/IECEx: Certified Ex ia IIC T5...T1 Ga for intrinsically safe applications, and Ex nA/ec IIC T5...T1 Gc for increased safety.
• RoHS: Compliant with environmental chemical restrictions.