Optimizing Rotating Machinery Protection with the Bently Nevada 21504-00-96-05-02
Industrial rotating machinery demands precise vibration monitoring to prevent catastrophic failures. The Bently Nevada 21504-00-96-05-02 proximity probe is engineered for this critical task. This 8 mm diameter probe provides non-contact displacement measurements, enabling early detection of shaft vibration and position changes.
Technical Specifications Breakdown
Key parameters for the 21504-00-96-05-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 21504 7200 Proximity Transducer Systems |
| Tip Diameter | 8 mm |
| Unthreaded Length Option | 0 mm |
| Overall Case Length | 9.6 in |
| Total Length | 0.5 metre (20 inches). Tolerance: +0.13 metre, -0.05 metre (+5 inches, -2 inches) |
| Connector Option | With miniature male coaxial connector |
| Threads | 3/8-24 |
| Power | -17.5 Vdc to -26 Vdc at 12 mA maximum consumption |
| Calibrated Range | 80 mils (2.0 mm). Begins at approximately 10 mils (0.25 mm) from probe face |
| Scale Factor | 200 mV/mil (7.87 V/mm), ±4% (system); ±9.5% including interchangeability |
| Frequency Response | 0 to 10 kHz (0 to 600,000 cpm); -5% at 10 kHz (600,000 cpm) |
| Operating Temperature (Proximitor) | -60°F to +212°F (-51°C to +100°C) |
| Operating Temperature (Probe and Extension Cable) | -30°F to +350°F (-34°C to +177°C) |
| System Weight | 1.3 lbs (0.59 kg) |
Industry Applications for Vibration Monitoring
The 80 mil (2.0 mm) calibrated range covers typical shaft vibration amplitudes in industrial machinery. With a frequency response up to 10 kHz (600,000 cpm), it captures both slow-speed shaft movements and high-frequency vibration events. The corrosion resistance to air, water, lube oil, and several chemicals makes it suitable for harsh environments.
Installation and Setup Guidance
Mount the probe using the 3/8-24 threaded case into a suitable mounting block or bracket. Ensure the probe face is positioned at the correct gap: the calibrated range begins at approximately 10 mils (0.25 mm) from the target surface. Connect the miniature male coaxial connector to the extension cable. Power the system with -17.5 Vdc to -26 Vdc at 12 mA maximum. Verify the scale factor of 200 mV/mil using a system calibration check.
Maintenance and Reliability
Periodically inspect the probe tip and cable for physical damage or contamination. The probe is designed for continuous operation within the specified temperature ranges. For 8 mm probes, the unit withstands direct contact with common industrial fluids. No routine recalibration is required unless the probe is replaced or the system is disturbed.
Selection Guide and Purchasing Advice
When selecting a replacement or spare proximity probe, verify the total length, thread size, and connector type. The 21504-00-96-05-02 is available new and original in factory packing from AutoDCSTech. Each unit includes a 12-month factory warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 21504-00-96-05-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
