What Is the 146054-08-50-00-05?
When you need reliable vibration monitoring in extreme conditions, the Bently Nevada 146054-08-50-00-05 delivers proven performance. This 3300 Ceramic Capped Proximity Probe uses a 3/8-24 UNF thread and a 5.0-meter coaxial cable to sense shaft displacement accurately. The Option: 00=No connector configuration gives you flexibility to integrate directly into your existing wiring. Designed for use with the 5 m Proximitor Sensor, this probe is a critical component for protecting rotating machinery.
Technical Specifications Breakdown
Understanding the key specs helps you confirm the right fit for your system:
- Linear Range: 1.52 mm (60 mils) starting at 0.25 mm from the target. This provides a usable voltage output of approximately –4 to –16 Vdc, ideal for monitoring radial vibration and axial position.
- Incremental Scale Factor (ISF): 7.87 V/mm (200 mV/mil) ±6.5% over the full linear range from 0°C to +45°C. This ensures consistent sensitivity across typical operating temperatures.
- Probe Tip Material: Alumina ceramic (Al₂O₃) offers excellent wear resistance and electrical insulation, maintaining measurement integrity even in high-temperature environments.
- Temperature Range: Operating and storage from -51°C to +177°C, making it suitable for both cold climates and hot machinery casings.
- Pressure Rating: Sealed to 34 Bar (500 psi) nitrogen, with higher-pressure options available from the custom design department.
- Agency Approvals: CSA, ATEX, and IECEx certified (Option -05), ensuring compliance with international safety standards for hazardous locations.
Industry Applications
This probe excels in applications where reliability and precision are non-negotiable:
- Steam and Gas Turbines: Monitor shaft vibration and thrust position to prevent catastrophic failures. The ceramic tip resists high temperatures and contamination from oil or steam.
- Compressors and Pumps: Detect early signs of imbalance or misalignment in rotating equipment. The 5-meter cable length suits typical machine train layouts without signal degradation.
- Hydroelectric Generators: Withstand high humidity and temperature swings while delivering accurate displacement data for predictive maintenance programs.
Installation & Setup Guidance
Proper installation ensures optimal performance:
- Thread Engagement: The probe case thread is 3/8-24 UNF with a maximum thread engagement of 0.563 in. Do not exceed this depth to avoid damaging the probe tip.
- Cable Routing: Use the standard 75 Ω coaxial FEP-insulated cable, avoiding sharp bends or kinks. Secure the cable away from high-voltage lines to prevent interference.
- Target Material: The system is calibrated for AISI 4140 steel targets. Using other materials will affect accuracy and interchangeability.
- Proximitor Matching: This 5 m probe must be paired with the 5 m Proximitor Sensor only. Verify the total system length before installation.
Maintenance & Reliability
To maximize service life and measurement accuracy:
- Inspect the probe tip and cable periodically for physical damage, especially in high-vibration or abrasive environments.
- Verify the pressure seal if the probe is installed in a pressurized housing. The standard seal is rated to 34 Bar (500 psi) nitrogen.
- Monitor ambient temperature against the Temperature Schedule table to ensure the probe operates within its certified temperature classification for your area.
- Follow the manufacturer's safety manual for any inspection or testing procedures. Do not attempt internal repairs or disassembly.
Selection Guide & Purchasing Advice
Before ordering, confirm these details:
- Overall Case Length: -08 = 0.8 in. Ensure your mounting hole depth accommodates this length.
- Total Length: -50 = 5.0 meters (16.4 feet). Verify this matches your machine layout and Proximitor sensor requirements.
- Connector Option: 00 = No connector. You will need to terminate the cable yourself or order a compatible connector separately.
- Agency Approval: -05 = CSA, ATEX, IECEx. Confirm your facility's hazardous area classification matches these certifications.
SpareTechPLC stocks the 146054-08-50-00-05 as new and original in factory packing, backed by a 12-month warranty. Please verify current lifecycle status and availability with our sales team before ordering.
Frequently Asked Questions
Q: Can I use this probe with a 9-meter Proximitor sensor?
No. The 5-meter probe is designed exclusively for the 5 m Proximitor Sensor. Using a different length will cause incorrect calibration and potential measurement errors.
Q: What is the maximum thread engagement depth?
0.563 inches. Exceeding this can damage the probe tip or affect measurement accuracy.
Q: Does this probe come with a connector?
No. The Option: 00=No connector means the cable ends bare. You will need to add your own connector or direct termination.
Q: What target material is the system calibrated for?
AISI 4140 steel. Using other materials will change the scale factor and linear range, requiring recalibration.
Q: Is this probe suitable for high-pressure applications?
The standard seal is rated to 34 Bar (500 psi) nitrogen. For higher pressures, contact the custom design department for modifications.
