Product Overview
The Bently Nevada 330172-00-08-50-02-CN is a 5mm proximity probe with a 1/4-28 UNF thread and robust armor, designed for precision vibration monitoring in rotating machinery. This Industrial Automation Module is part of the proven 3300 series and is manufactured in the USA. Its polyphenylene sulfide (PPS) tip and AISI 304 stainless steel case ensure durability in demanding industrial settings. With a total length of 5.0 meters (16.4 feet) and a miniature coaxial ClickLoc connector, the 330172-00-08-50-02-CN delivers reliable performance for critical asset protection.
Key Technical Specifications
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Power Supply: Requires -17.5 Vdc to -26 Vdc at 12 mA maximum consumption. Operation above -23.5 Vdc may reduce linear range.
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Supply Sensitivity: Less than 2 mV change in output voltage per volt change in input voltage.
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Output Resistance: 50 W (as specified).
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Probe DC Resistance: 8.73 ± 0.70 Ω (for 5.0 m probe).
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Probe Tip Material: Polyphenylene sulfide (PPS).
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Probe Case Material: AISI 304 stainless steel (SST) or AISI 303/304.
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Cable: 75 Ω triaxial, FEP insulated, available in 0.5, 1, 2, 5, or 9 meters.
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Temperature Range: -35°C to +177°C (-31°F to +351°F). Exposing below -34°C may cause premature failure.
Installation and Mounting Guidance
Proper installation of the Bently Nevada 330172-00-08-50-02-CN is critical for accurate readings. The probe case thread is 1/4-28 with a maximum thread engagement of 0.375 inches. When drilling and tapping, use a #3 or larger tap drill. Recommended probe case torque is 5.1 N·m (45 in·lb) with a maximum of 7.3 N·m (65 in·lb). The connector-to-connector torque should not exceed 0.565 N·m (0.42 ft·lbf). Maintain a minimum cable bend radius of 25.4 mm (1.0 in) to avoid damage.
Common Issues and Troubleshooting
The 330172-00-08-50-02-CN is designed to mitigate common failure modes. Its temperature classification covers T1 through T5 for EPL Ga/Gc and T90 through T280 for EPL Dc, ensuring safe operation across a wide ambient range. Exposure to 60 Hz magnetic fields up to 300 Gauss is accounted for; the output voltage variation at 50 mil gap is 0.0131 mil pp/gauss for the XL Proximitor Sensor, 0.0014 for the probe, and 0.0014 for the XL Ext. Cable. To avoid signal degradation, verify that the gap is set correctly (default at 1.27 mm / 50 mils). Overtightening the probe or exceeding temperature limits can cause premature seal failure.
Maintenance and Reliability Considerations
Regular inspection of the Bently Nevada 330172-00-08-50-02-CN should focus on connector integrity and cable condition. Do not operate below -34°C as this may compromise the pressure seal. The probe's tensile strength is 222 N (50 lbf) for both probe case to lead and lead to extension cable connectors. Connector material is gold-plated brass or beryllium copper for corrosion resistance. For prolonged life, adhere to the recommended torque values and avoid bending the cable beyond its minimum radius.
Selection Guide and Purchasing Advice
When ordering the Bently Nevada 330172-00-08-50-02-CN, verify that your system requires a 5mm probe with 1/4-28 UNF thread and a 5.0-meter overall length. Ensure compatibility with your proximity transducer system, typically requiring a -24 Vdc supply and 10 kW load. For genuine replacement parts and expert support, PLC Source PRO offers this exact model with fast shipping and quality assurance. Contact our team for assistance with cross-referencing or system integration.