Bently Nevada 146054-08-05-00-00 3300 Ceramic Capped Proximity Probe

Product Introduction

When machinery vibration threatens production uptime, the Bently Nevada 146054-08-05-00-00 3300 Ceramic Capped Proximity Probe delivers precise, reliable measurements. This probe is part of the trusted 3300 series, designed for non-contact displacement and vibration monitoring in rotating machinery. With its alumina ceramic tip and stainless steel case, it withstands extreme temperatures and pressures, making it ideal for turbines, compressors, and pumps in oil and gas, power generation, and heavy industry.

Technical Specifications Breakdown

The 146054-08-05-00-00 is a 3300 Ceramic Capped Probe with a 3/8-24 UNF thread, without armor. Key specifications include:

Overall Case Length: 0.8 inches (option -08), with a maximum thread engagement of 0.563 inches.

Total Length: 0.5 meters (1.6 feet) – option -05, using a 75 Ω coaxial FEP insulated cable.

Connector: None (option -00), allowing direct termination in the field.

Agency Approval: Not required (option -00).

Probe Case Thread: 3/8-24.

Probe Tip Material: Alumina ceramic (Al₂O₃).

Probe Case Material: AISI 304 stainless steel.

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

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

Nominal DC Resistance: 7.45 ± 0.50 ohms (center to outer conductor).

These specs ensure accurate, repeatable measurements in demanding environments. The 5 mm system provides a linear range of 1.52 mm (60 mils) from 0.25 to 1.78 mm (10 to 70 mils), with an incremental scale factor of 7.87 V/mm (200 mV/mil) ±6.5%.

Industry Applications

In a gas turbine train, the 146054-08-05-00-00 monitors shaft vibration and thrust position, alerting operators to early signs of imbalance or misalignment. Its ceramic cap resists wear from high-speed rotation, while the stainless steel case withstands corrosive atmospheres. For a centrifugal compressor in a refinery, this probe delivers stable readings despite process gas temperatures up to 177°C, preventing unplanned shutdowns. The 0.5-meter cable length suits tight installations near the bearing housing, reducing signal noise.

Installation & Setup Guidance

Mount the probe using the 3/8-24 UNF thread into a standard mounting boss. Ensure the target surface is clean and made of AISI 4140 steel for best accuracy. The probe tip should be positioned 0.25 mm (10 mils) from the target at the start of the linear range. Use the supplied 75 Ω coaxial cable and route it away from high-voltage lines. For systems requiring a connector, select the appropriate option from the 146054 ordering code.

Maintenance & Reliability

Regularly inspect the probe cable for cuts or abrasion, especially near the entry point. Check the ceramic tip for cracks or contamination. The probe requires no routine calibration if installed correctly. Its robust construction minimizes drift, but verify the system’s incremental scale factor annually. For high-pressure applications above 34 Bar (500 psi), contact Bently Nevada for modified seals. The 12-month factory warranty covers defects in materials and workmanship.

Selection Guide & Purchasing Advice

When ordering, confirm the overall case length, total length, connector type, and agency approval options. The 146054-08-05-00-00 suits applications needing a 0.5-meter cable and no connector. For longer cables, choose options 1, 2, 5, or 9 meters. BluePLC Industrial stocks this probe in new, original factory packing. Contact us for current lifecycle status and availability. We help you select the right probe for your machinery protection system.