What Is the Bently Nevada 146055-50-02-05?
When rotating machinery vibration threatens uptime, the Bently Nevada 146055-50-02-05 provides precise measurement. This 3300 Ceramic Capped Reverse Mount Probe uses an alumina ceramic tip (Al2O3) for durability and accuracy. It operates within a linear range of 1.52 mm (60 mils), starting at approximately 0.25 mm (10 mils) from the target, delivering an incremental scale factor of 7.87 V/mm (200 mV/mil) ±6.5% over the full range. The probe features 3/8-24 UNF threads and a total length of 5.0 meters (16.4 feet) with a miniature ClickLoc coaxial connector and standard cable. It carries multiple agency approvals, ensuring compliance in diverse industrial environments.
Technical Specifications Breakdown
- Linear Range: 1.52 mm (60 mils) from 0.25 to 1.78 mm (10 to 70 mils) – ideal for capturing shaft vibration in turbines, compressors, and pumps.
- Incremental Scale Factor (ISF): 7.87 V/mm (200 mV/mil) ±6.5% including interchangeability error, measured over 0°C to +45°C (+32°F to +113°F). This ensures consistent output across temperature variations.
- Probe Tip Material: Alumina ceramic (Al2O3) – resists wear and provides stable electrical properties.
- Probe Case Material: AISI 304 stainless steel – offers corrosion resistance in harsh environments.
- Temperature Range: -51°C to +177°C (-60°F to +351°F) operating and storage, with pressure rating to 34 Bar (500 psi) nitrogen.
- DC Resistance: 8.73 ± 0.70 ohms from center conductor to outer conductor at 5.0 meter length.
Industry Applications
This probe excels in critical rotating machinery monitoring. In steam turbines, the 146055-50-02-05 measures shaft vibration and position, enabling early detection of imbalance or misalignment. For centrifugal compressors, its ceramic tip withstands high temperatures and pressures, while the 5-meter cable integrates seamlessly with 5 m Proximitor Sensors. The reverse mount design simplifies installation in tight spaces, reducing downtime during retrofits.
Installation & Setup Guidance
Mount the probe using the 3/8-24 UNF thread with a maximum thread engagement of 0.563 inches. Ensure the target is AISI 4140 steel for system accuracy specifications. The probe requires a -24 Vdc power supply and a 10 kΩ load. Calibrate the system by setting the gap voltage within the linear range (approximately -4 to -16 Vdc). Use only the 5 m Proximitor Sensor for optimal performance, as the cable length tolerance is +20%, -0%.
Maintenance & Reliability
Inspect the probe cable and connector periodically for damage. The FEP-insulated coaxial cable resists chemicals and high temperatures. Avoid exceeding the pressure rating of 34 Bar (500 psi) unless modifications are ordered. For extended life, keep the probe tip clean and free from debris. The 12-month factory warranty from SpareTechPLC covers defects, but routine checks prevent unexpected failures.
Selection Guide & Purchasing Advice
Before ordering, confirm your system requirements: the 146055-50-02-05 is designed for 5-meter systems with the 5 m Proximitor Sensor. Verify the thread type (3/8-24 UNF) and connector (miniature ClickLoc coaxial). SpareTechPLC stocks this model new and original in factory packing. Contact us to confirm lifecycle status and availability. We offer competitive pricing and fast shipping for industrial automation needs.
Frequently Asked Questions
Q: What is the linear range of the 146055-50-02-05?
A: The linear range is 1.52 mm (60 mils), starting at approximately 0.25 mm (10 mils) from the target, from 0.25 to 1.78 mm (10 to 70 mils).
Q: Can I use this probe with a 9-meter Proximitor Sensor?
A: No. The 5-meter probe is designed exclusively for use with the 5 m Proximitor Sensor. Using a different length may affect accuracy.
Q: What is the probe tip material?
A: The tip is made of alumina ceramic (Al2O3), providing high wear resistance and stable electrical performance.
Q: What is the temperature range for operation?
A: The probe operates and stores from -51°C to +177°C (-60°F to +351°F).
Q: Does the probe come with a warranty?
A: Yes, SpareTechPLC provides a 12-month factory warranty on new and original units.
