Bently Nevada 21504-24-64-05-02 8 mm Proximity Probe for Vibration Monitoring

Technical Specifications Breakdown

Key parameters for the 21504-24-64-05-02 are listed below for quick reference:

Industry Applications and Operational ROI

Installing the 21504-24-64-05-02 on critical rotating assets delivers measurable cost benefits. In a refinery, early detection of shaft vibration in a main air compressor can prevent catastrophic bearing failure, saving hundreds of thousands in repair costs and lost production. The probe's 80 mil (2.0 mm) calibrated range and 200 mV/mil scale factor provide the sensitivity needed to catch subtle changes in radial vibration and thrust position. With a frequency response from 0 to 10 kHz, it captures both slow-speed runout and high-frequency vibration events common in gearboxes and turbines. This data enables condition-based maintenance, extending equipment life and reducing unplanned outages.

Installation and Setup Guidance

Proper installation is critical for accurate readings. Mount the probe using the 3/8-24 thread into a rigid, non-magnetic bracket or housing. Ensure the probe face is clean and free of debris. The total length of 0.5 metre (20 inches) with a miniature male coaxial connector simplifies routing to the proximitor. Maintain the recommended gap of approximately 10 mils (0.25 mm) from the target surface at initial setup. Use the system calibration to achieve the ±4% scale factor accuracy. Always follow the manufacturer's guidelines for cable routing to avoid signal interference.

Maintenance and Reliability

The 8 mm probe is designed for continuous operation in demanding conditions. Its corrosion resistance allows direct contact with air, water, lube oil, ammonium hydroxide, sulfuric acid (10%), MEK, or DMF without affecting operation. The operating temperature range of -30°F to +350°F (-34°C to +177°C) for the probe and extension cable suits most machinery environments. Periodically inspect the probe face and cable for physical damage. Verify system calibration annually or after any maintenance that alters the probe gap.

Reliable Vibration Monitoring for Critical Rotating Machinery

Unplanned downtime in turbomachinery, compressors, and pumps often stems from undetected shaft vibration or displacement. The Bently Nevada 21504-24-64-05-02 proximity probe provides the precise, real-time data needed to identify developing faults before they cause failures. This 8 mm probe is a key component of the 7200 Proximity Transducer System, engineered for continuous monitoring in harsh industrial environments.

Compatibility and Integration

This probe is part of the Bently Nevada 7200 Proximity Transducer System. It works with compatible proximitors and extension cables to form a complete measurement chain. The miniature male coaxial connector ensures a secure, noise-resistant connection. Verify system compatibility with your existing Bently Nevada monitoring hardware before ordering.

Selection Guide and Purchasing Advice

When selecting a replacement or spare probe, confirm the total length, thread size, and connector type match your application. The 21504-24-64-05-02 is a new, original factory-packed unit with a 12-month warranty. AutoDCSTech stocks this model for immediate shipment. Please verify current lifecycle status and availability with AutoDCSTech before ordering.