Bently Nevada 21504-00-40-05-02 8 mm Proximity Probe for Vibration Monitoring

Technical Specifications Breakdown

Key parameters for the 21504-00-40-05-02 are listed below for quick reference:

Industry Applications for Vibration Monitoring

Typical applications include steam turbines, centrifugal compressors, and large pumps where early detection of imbalance, misalignment, or bearing wear prevents catastrophic failure. The 80 mil (2.0 mm) calibrated range and 0 to 10 kHz frequency response cover most common machine fault frequencies.

Installation and Setup Guidance

Mount the probe using the standard 318-24 thread into a suitable mounting block or bracket. Ensure the unthreaded length of 0 mm provides proper tip exposure. Connect the miniature male coaxial connector to the extension cable. Set the initial gap to approximately 50 mils (1.27 mm) for optimal linearity. The input power must be between -17.5 Vdc and -26 Vdc at 12 mA maximum consumption. Always verify system calibration with a certified Bently Nevada calibrator.

Maintenance and Reliability

Inspect the probe tip and cable periodically for physical damage or contamination. The probe is resistant to common industrial fluids including lube oil and water, but avoid prolonged exposure to aggressive solvents not listed. The operating temperature range of -34°C to +177°C for the probe and cable suits most machinery environments. No routine recalibration is required if the system remains within environmental limits.

Are unplanned machine vibrations causing costly downtime in your plant?

Accurate vibration monitoring is critical for protecting rotating machinery like turbines, compressors, and pumps. The Bently Nevada 21504-00-40-05-02 is a precision 8 mm proximity probe designed to deliver reliable displacement measurements in the harshest industrial environments. Part of the trusted 7200 series, this probe converts mechanical vibration into a linear electrical signal for early fault detection and predictive maintenance.

Compatibility and Integration

This probe is designed for use with Bently Nevada 7200 series proximity transducer systems. The 0.5 metre (20 inch) total length with miniature coaxial connector mates directly to compatible extension cables and proximitors. The scale factor of 200 mV/mil (7.87 V/mm) ensures straightforward integration with Bently Nevada monitors and third-party data acquisition systems.

Selection Guide and Purchasing Advice

When ordering, verify the total length option (05 = 0.5 metre) and connector option (02 = miniature male coaxial) meet your application requirements. The 21504-00-40-05-02 is available new and original in factory packing from AutoDCSTech, backed by a 12-month factory warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering.