Technical Specifications Breakdown
Key parameters for the 21505-00-72-10-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 21505 7200 Proximity Transducer System |
| Tip Diameter | 8 mm |
| Thread Configuration | 3/8-24 |
| Unthreaded Length Option | 00 - 0.0 in |
| Overall Case Length Option | 72 - 7.2 in |
| Total Length Option | 10 - 1.0 metre (39 inches) |
| Connector Option | 02 - With miniature male coaxial connector |
| Lead Armor | Yes (stainless steel) |
| Power Input | -17.5 Vdc to -26 Vdc at 12 mA maximum consumption |
| Calibrated Range | 80 mils (2.0 mm) |
| Scale Factor | 200 mV/mil (7.87 V/mm), ±4% |
| Linearity (system) | Within 0.8 mils (0.02 mm) of a 200 mV/mil straight line |
| Frequency Response | 0 to 10 kHz (0 to 600,000 cpm); -5% at 10 kHz |
| 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) |
| Relative Humidity | To 95%, noncondensing |
| System Weight | 1.3 lbs (0.59 kg) |
Industry Applications
Typical installations include steam turbines, centrifugal compressors, large pumps, and electric motors. The 80 mil calibrated range and 200 mV/mil scale factor provide high-resolution data for early detection of bearing wear, imbalance, or misalignment. With a frequency response from 0 to 10 kHz, it captures both slow roll and high-speed vibration events.
Installation & Setup Guidance
Proper installation is critical for accurate readings. Mount the probe using the 3/8-24 thread into a rigid bracket or machine case, ensuring the tip is positioned within the calibrated range (beginning at approximately 10 mils from the probe face). The total length option of 1.0 metre (39 inches) with miniature male coaxial connector simplifies cabling to the proximitor. Use the stainless steel lead armor to protect the cable in abrasive environments. Always verify gap voltage during commissioning.
Maintenance & Reliability
The probe and extension cable withstand temperatures from -30°F to +350°F, making them suitable for hot machinery zones. The stainless steel armor resists corrosion from air, water, lube oil, ammonium hydroxide, sulfuric acid (10%), MEK, or DMF. Inspect the probe face and cable periodically for physical damage. Ensure the proximitor remains within its -60°F to +212°F operating range for consistent performance.
Reliable Vibration Monitoring for Critical Machinery
When protecting rotating assets like turbines, compressors, and pumps, precise vibration measurement is non-negotiable. The Bently Nevada 21505-00-72-10-02 8 mm proximity probe delivers the accuracy and ruggedness required for continuous monitoring in harsh industrial environments. Designed as part of the 7200 Proximity Transducer System, this sensor provides real-time shaft displacement data to help prevent unplanned downtime.
Selection Guide & Purchasing Advice
When selecting a replacement or new proximity probe, confirm the thread size, overall case length, and connector type match your existing system. The 21505-00-72-10-02 is a standard 8 mm probe with 7.2-inch case length and 1.0-meter cable with coaxial connector. AutoDCSTech stocks this Bently Nevada part as new, original factory packing with 12-month warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 21505-00-72-10-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
