Bently Nevada 173687-01-50-12-05 3300 XL 8 mm Proximity Probes

Product Overview

When rotating machinery experiences unexpected vibration or shaft displacement, the Bently Nevada 173687-01-50-12-05 3300 XL 8 mm Proximity Probes deliver precise, real-time measurements. These probes form a critical part of your condition monitoring system, helping you detect faults before they cause costly downtime. Designed for harsh industrial environments, this model combines robust construction with proven sensing technology.

Technical Specifications Breakdown

The 173687-01-50-12-05 features a polyphenylene sulfide (PPS) probe tip material, offering chemical resistance and dimensional stability. The probe case is constructed from AISI 303 or 304 stainless steel (SST), ensuring durability in corrosive atmospheres. With a mounting thread of 1/2-14 NPT, installation into standard tapped holes is straightforward. The system length is 5.0 metres (16.4 feet), providing flexibility for routing cables to monitoring equipment. The unthreaded length option is 0.1 inches, and the overall case length is 5 inches. The connector and cable-type option is a miniature ClickLoc coaxial connector with FluidLoc cable, designed for reliable signal transmission in wet or oily conditions. The probe weighs 0.323 kg. Agency approvals include CSA, ATEX, and IECEx, making it suitable for hazardous area installations.

Industry Applications

In the oil and gas sector, the 173687-01-50-12-05 monitors shaft vibration and axial position in compressors and turbines. The ATEX and IECEx approvals allow safe operation in explosive atmospheres. In power generation, these probes track rotor dynamics in steam and gas turbines, enabling predictive maintenance. The PPS tip withstands high temperatures and aggressive media, reducing probe replacement frequency. By integrating these probes into your monitoring system, you gain early warning of bearing wear, imbalance, or misalignment.

Installation Guide

Mount the 173687-01-50-12-05 using the 1/2-14 NPT thread into a properly tapped hole in the machine casing. Ensure the probe tip is positioned at the correct gap from the target surface per manufacturer guidelines. Route the FluidLoc cable away from sharp edges and heat sources. The miniature ClickLoc coaxial connector simplifies connection to extension cables or monitors. Verify that the system length of 5.0 metres meets your installation distance requirements. After installation, perform a static calibration check to confirm proper operation.

Maintenance Tips

Periodically inspect the probe cable and connector for signs of wear, cuts, or corrosion. Clean the probe tip gently with a soft cloth if contaminants accumulate. The Viton O-ring seal maintains differential pressure between the tip and case; inspect for leakage during routine maintenance. Avoid applying excessive torque during installation or removal. Regular calibration verification ensures measurement accuracy over time. For pressure-critical applications, contact the custom design department for pressure testing options.

Selection Guide

When ordering the 173687-01-50-12-05, confirm that the system length, unthreaded length, and connector type match your application requirements. The FluidLoc cable option is not necessary for most 330105 and 330106 installations due to the probe sleeve; evaluate your environment before selecting this option. Verify agency approval compatibility with your site’s hazardous area classification before purchase.