Bently Nevada 146054-08-20-00-00 3300 Ceramic Capped Proximity Probe

Product Introduction

The Bently Nevada 146054-08-20-00-00 is a 3300 Ceramic Capped Proximity Probe designed for precise vibration and position measurement in rotating machinery. This probe features a 3/8-24 UNF thread, a 0.8-inch overall case length, and a 2.0-meter (6.6 feet) total cable length. It is supplied without armor and without a connector, making it suitable for custom installations. The probe tip is made of alumina ceramic (Al2O3) for durability, while the case is constructed from AISI 304 stainless steel. Each unit is new, in original factory packing, and backed by a 12-month factory warranty.

Technical Specifications Breakdown

The 146054-08-20-00-00 operates as part of a 3300 5 mm system. Key specifications include:

Linear Range: 1.52 mm (60 mils), starting at approximately 0.25 mm (10 mils) from the target, corresponding to -4 to -16 Vdc output.

Incremental Scale Factor (ISF): 7.87 V/mm (200 mV/mil) ±6.5% including interchangeability error, measured over the 60 mil linear range from 0°C to +45°C.

Probe DC Resistance: 7.88 ± 0.50 ohms from center conductor to outer conductor for a 2.0-meter probe.

Temperature Range: Operating and storage from -51°C to +177°C (-60°F to +351°F).

Pressure Rating: Sealed to 34 Bar (500 psi) nitrogen.

These parameters ensure reliable performance in harsh industrial environments.

Industry Applications

This proximity probe is widely used in turbomachinery monitoring, including steam turbines, gas turbines, compressors, and pumps. Its ceramic cap provides excellent wear resistance and stability in high-temperature and high-pressure conditions. The 3/8-24 UNF thread allows easy mounting in standard probe holders. The 2.0-meter cable length is ideal for installations where the sensor is close to the machine casing, reducing signal loss.

Installation & Setup Guidance

When installing the 146054-08-20-00-00, ensure the probe tip is positioned within the linear range (0.25 to 1.78 mm from the target). Use a non-magnetic probe holder and tighten to the recommended torque for 3/8-24 UNF threads. The maximum thread engagement length is 0.563 inches. Connect the coaxial cable to a compatible Bently Nevada Proximitor sensor and extension cable. Verify the system calibration with an AISI 4140 steel target for optimal accuracy.

Maintenance & Reliability

The 3300 Ceramic Capped Probe is designed for long-term reliability. The alumina ceramic tip resists wear and chemical attack. The stainless steel case withstands corrosion. Periodically inspect the probe cable for damage and ensure the mounting remains secure. The probe is rated for continuous operation from -51°C to +177°C, making it suitable for extreme environments. For high-pressure applications above 34 Bar, contact the manufacturer for custom modifications.

Selection Guide & Purchasing Advice

When ordering the 146054-08-20-00-00, verify the total length option (B: -20 = 2.0 meters) and the connector option (C: 00 = no connector). This model is without armor and without agency approvals. For applications requiring a connector or armor, refer to the full ordering code structure: 146054-AA-BB-CC-DD. BluePLC Industrial offers this probe in new, original factory packing with a 12-month warranty. Contact BluePLC Industrial for current availability and replacement options.