What Is the Bently Nevada 146055-20-02-00?
When machinery vibration monitoring demands precision and durability, the Bently Nevada 146055-20-02-00 delivers. This 3300 Ceramic Capped Reverse Mount Probe is designed for reliable proximity sensing in critical rotating equipment. With a 2.0-meter (6.6 feet) total length and a Miniature ClickLoc coaxial connector, it integrates seamlessly into existing monitoring systems. The probe features a 3/8-24 UNF thread and an alumina ceramic tip, ensuring long-term stability in harsh industrial environments.
Technical Specifications Breakdown
Linear Range and Sensitivity
The 146055-20-02-00 offers a linear range of 1.52 mm (60 mils), starting at approximately 0.25 mm (10 mils) from the target. This range corresponds to an output of –4 to –16 Vdc. The incremental scale factor (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 (+32°F to +113°F). This ensures consistent, accurate vibration readings across a wide temperature window.
Probe DC Resistance
For the 2.0-meter probe length, the nominal DC resistance from the center conductor to the outer conductor is 7.88 ± 0.50 ohms. This value is critical for verifying cable integrity and system calibration.
Mechanical and Environmental Ratings
The probe case is made of AISI 304 stainless steel, and the tip is alumina ceramic (Al2O3). It operates and stores from -51°C to +177°C (-60°F to +351°F) and is rated to seal 34 Bar (500 psi) nitrogen. The maximum thread engagement length is 0.563 inches.
Industry Applications
Turbine Vibration Monitoring
In steam and gas turbines, the 146055-20-02-00 measures shaft vibration and position with high accuracy. Its 7.87 V/mm sensitivity detects subtle changes, enabling early fault detection and reducing unplanned downtime.
Compressor Protection
Centrifugal and axial compressors benefit from the probe's wide temperature range and pressure rating. The 34 Bar seal capability suits high-pressure environments, while the ceramic tip resists wear from oil and debris.
Installation Guide
Mount the probe using the 3/8-24 UNF thread, ensuring the thread engagement does not exceed 0.563 inches. Connect the Miniature ClickLoc coaxial connector to a compatible extension cable. For best performance, calibrate the system with an AISI 4140 steel target. Verify the DC resistance (7.88 ± 0.50 ohms) to confirm cable integrity before final installation.
Maintenance Tips
Inspect the probe cable and connector periodically for damage. Clean the ceramic tip with a soft, dry cloth—avoid solvents. Verify the DC resistance annually to detect cable degradation. The probe's stainless steel case resists corrosion, but ensure the mounting area remains free of excessive moisture.
Buying Guide
Before purchasing the 146055-20-02-00, confirm your system requirements: total probe length (2.0 meters), connector type (Miniature ClickLoc), and agency approval (None). This probe is part of the 3300 XL system and works with Bently Nevada Proximitor sensors and extension cables. SpareTechPLC stocks this item new in factory packaging with a 12-month warranty. Contact us for current lifecycle status and availability.
Frequently Asked Questions
Q: What is the linear range of the 146055-20-02-00?
A: The linear range is 1.52 mm (60 mils), starting at approximately 0.25 mm (10 mils) from the target.
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.
Q: What is the probe's operating temperature range?
A: The probe operates and stores from -51°C to +177°C (-60°F to +351°F).
Q: What is the DC resistance of the 2.0-meter probe?
A: The nominal DC resistance from center to outer conductor is 7.88 ± 0.50 ohms.
Q: What thread size does the probe use?
A: The probe case thread is 3/8-24 UNF, with a maximum thread engagement of 0.563 inches.
