What Is the 146054-08-20-00-05?
When rotating machinery vibration threatens uptime, the Bently Nevada 146054-08-20-00-05 provides reliable measurement. This 3300 Ceramic Capped Proximity Probe is designed for non-contact displacement sensing in critical turbomachinery, compressors, and pumps. Part of the proven 3300 series, this probe offers a ceramic tip for durability and consistent performance.
Technical Specifications Breakdown
The 146054-08-20-00-05 delivers precise measurements with a linear range of 1.52 mm (60 mils), starting at approximately 0.25 mm (10 mils) from the target. Its incremental scale factor (ISF) is 7.87 V/mm (200 mV/mil) with ±6.5% interchangeability error over the full range from 0°C to +45°C (+32°F to +113°F). The probe operates reliably from -51°C to +177°C (-60°F to +351°F) and seals to 34 Bar (500 psi) nitrogen. It features a 3/8-24 UNF thread case with a maximum thread engagement of 0.563 in. The probe case is AISI 304 stainless steel, and the tip is alumina ceramic (Al2O3). The standard 75 Ω coaxial FEP cable is 2.0 meters (6.6 feet) long with a nominal DC resistance of 7.88 ± 0.50 ohms from center to outer conductor.
Industry Applications
This proximity probe excels in steam turbines, gas turbines, and centrifugal compressors where high-temperature and high-pressure conditions exist. Its ceramic tip resists wear and contamination, making it suitable for environments with oil mist or particulates. The wide temperature range (-51°C to +177°C) allows installation near hot bearing housings without performance degradation.
Installation & Setup Guidance
Mount the probe using the 3/8-24 UNF thread, ensuring the case does not exceed the 0.563 in maximum thread engagement. Use a clean, non-marring tool to avoid damaging the ceramic tip. Position the probe so the linear range begins approximately 0.25 mm from the target. Connect the coaxial cable to a compatible Bently Nevada Proximitor sensor and extension cable. Verify the system is calibrated to an AISI 4140 steel target for accurate readings.
Maintenance & Reliability
Inspect the probe cable periodically for cuts or abrasion, especially near the connection points. Keep the ceramic tip free of debris and conductive deposits. The stainless steel case resists corrosion in most industrial atmospheres. For optimal reliability, verify the pressure seal integrity after installation. The 146054-08-20-00-05 is rated for CSA, ATEX, and IECEx hazardous locations, ensuring safe operation in explosive environments.
Selection Guide & Purchasing Advice
Before ordering, confirm your system requires the 0.8 in overall case length and 2.0 m cable length. The connector option is 0 0= (no connector), so ensure your Proximitor sensor accepts bare wire connections. The agency approval -05 includes CSA, ATEX, and IECEx certifications. SpareTechPLC stocks this Bently Nevada 146054-08-20-00-05 as new and original in factory packing with a 12-month warranty. Verify current lifecycle status and availability with our team before ordering.
Frequently Asked Questions
Q: What is the linear range of the 146054-08-20-00-05?
A: The linear range is 1.52 mm (60 mils), starting at approximately 0.25 mm from the target and extending to 1.78 mm.
Q: What is the incremental scale factor?
A: The ISF is 7.87 V/mm (200 mV/mil) with ±6.5% interchangeability error over the full linear range from 0°C to +45°C.
Q: What approvals does this probe have?
A: The -05 option includes CSA, ATEX, and IECEx certifications for hazardous locations.
Q: What is the maximum operating temperature?
A: The probe operates from -51°C to +177°C (-60°F to +351°F) for both storage and operation.
Q: What cable length and resistance does the 146054-08-20-00-05 have?
A: The cable is 2.0 meters (6.6 feet) with a nominal DC resistance of 7.88 ± 0.50 ohms.
