Product Overview
The Bently Nevada 146054-08-05-02-05 is a 3300 Ceramic Capped Proximity Probe designed for precise, non-contact shaft vibration and position measurement in critical rotating machinery. This model features a 3/8-24 UNF thread, an overall case length of 0.8 inches, and a 0.5-meter standard cable with a miniature coaxial ClickLoc connector. It carries CSA, ATEX, and IECEx agency approvals, making it suitable for hazardous area installations.
Engineered for reliability, the 146054-08-05-02-05 delivers a linear range of 1.52 mm (60 mils) and an incremental scale factor of 7.87 V/mm (200 mV/mil) with ±6.5% interchangeability error. Its alumina ceramic tip and AISI 304 stainless steel case ensure durability in demanding environments.
Key Technical Specifications
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Probe Case Thread: 3/8-24
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Maximum Thread Engagement: 0.563 in
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Probe Nominal DC Resistance (0.5 m length): 7.45 ± 0.50 ohms
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Linear Range: 1.52 mm (60 mils) from 0.25 to 1.78 mm (10 to 70 mils)
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Incremental Scale Factor (ISF): 7.87 V/mm (200 mV/mil) ±6.5%
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Probe Tip Material: Alumina ceramic (Al2O3)
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Probe Case Material: AISI 304 stainless steel
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Probe Cable: 75 Ω coaxial, FEP insulated, total length 0.5 m
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Operating/Storage Temperature: -51°C to +177°C (-60°F to +351°F)
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Probe Pressure Rating: 34 Bar (500 psi) nitrogen
Applications
This proximity probe is ideal for monitoring radial shaft vibration, axial position, and eccentricity in turbomachinery, compressors, pumps, and generators. The 146054-08-05-02-05 excels in environments where high temperature or pressure variations exist, thanks to its robust ceramic tip and stainless steel construction.
In a typical steam turbine installation, the probe's linear range and ISF accuracy allow early detection of shaft misalignment or bearing wear, enabling predictive maintenance and reducing unplanned downtime—a key cost-saving advantage for plant operators.
Installation & Setup Guidance
Proper installation is critical for accurate readings. Mount the probe with the 3/8-24 thread into a suitable mounting block or bracket, ensuring the tip is positioned within the linear range (0.25 to 1.78 mm from the target). Use the ClickLoc connector to secure the cable and protect it from mechanical stress. Calibrate the system with an AISI 4140 steel target to meet specified performance characteristics. Always follow the manufacturer's guidelines for torque and gap settings.
Maintenance & Reliability
Regularly inspect the probe cable and connector for damage, as FEP insulation can degrade if exposed to harsh chemicals or excessive heat. Clean the probe tip with a soft cloth to remove any debris that could affect measurement. The probe's sealed design withstands up to 34 Bar (500 psi) nitrogen, but for higher-pressure applications, consult the custom design department. Periodic verification of DC resistance (7.45 ± 0.50 ohms) helps confirm cable integrity.
Selection Guide & Purchasing Advice
When ordering a replacement, verify the exact model number 146054-08-05-02-05 to ensure compatibility with your 3300 system. Confirm the cable length, connector type, and agency approvals match your installation requirements. For expert assistance and genuine, factory-packed units, PLC Source PRO offers this part with a 12-month warranty and reliable global shipping.