Technical Specifications Breakdown
Key parameters for the 21505-04-48-10-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 21505 7200 Proximity Transducer System |
| Tip Diameter | 8 mm |
| Unthreaded Length Option | 04 40mm |
| Overall Case Length Option | 48 4.8 in |
| Total Length Option | 10 1.0 metre (39 inches) Tolerance: +.25 metre,-.10 metre(+ 10 inches,-4 inches) |
| Connector Option | 02 With miniature male coaxial connector |
| Configuration Type Threads | 3/8-24 |
| Lead Armor | Yes (stainless steel) |
| Power | -17.5 Vde to -26 Vdc at 12 mAmaximum 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% (measured in increments of 10 mils over the calibrated range) if calibrated as a system, Within ±9.5% including interchangeability errors |
| Linearity | Within 0.8 mils (0.02 mm) of a 200 mV/mil straight line if calibrated as a system. Within 2.3 mils (0.06 mm) of a 200 mV/mil straight line including interchangeability errors |
| Frequency Response | 0 to 10 kHz (0 to 600,000 cpm); -5% at 10 kHz (600,000 cpm) |
| Temperature Sensitivity | Typically -396 change in scale factor at +150°F (+65°C) at 50 mils gap (1.27 mm) |
| 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 |
| Corrosion Resistance (for 8 mm probes only) | Probe operation is not affected by direct contact to the following: air, water, lube oil, ammonium hydroxide, sulfuric acid (10%), MEK (methyl-ethylkeytone) or DMF (Dimethylfor-mamide) |
| System Weight | 1.3 lbs. (0.59 kg) |
Industry Applications
In a steam turbine train, the probe mounts into a 3/8-24 threaded hole to sense shaft displacement. The 200 mV/mil scale factor provides high-resolution data for trend analysis, enabling early detection of bearing wear or imbalance. The probe's corrosion resistance to lube oil and water makes it suitable for harsh environments like compressor stations.
Installation & Setup Guidance
When installing the 21505-04-48-10-02, ensure the probe face is clean and the mounting surface is free of debris. The unthreaded length of 40 mm allows for proper insertion depth. Use the miniature male coaxial connector to attach the extension cable, and verify the total length of 1.0 metre meets the routing requirements. The power supply must be -17.5 Vdc to -26 Vdc. Calibrate the system to achieve the ±4% scale factor accuracy.
Maintenance & Reliability
Inspect the probe and cable periodically for physical damage or corrosion. The stainless steel lead armor protects against mechanical wear. The probe's temperature range of -30°F to +350°F ensures reliable operation in high-heat environments. Check the connector for tightness to prevent signal loss. The system weight of 1.3 lbs. simplifies handling during replacement.
Failure Mode Analysis & Prevention: The Bently Nevada 21505-04-48-10-02 Proximity Probe
From a maintenance engineer's perspective, early detection of shaft vibration and position is critical to preventing catastrophic machine failures. The Bently Nevada 21505-04-48-10-02 proximity probe is a key component in the 7200 series transducer system, designed to provide accurate, real-time data for protecting rotating assets like turbines, compressors, and pumps.
Compatibility & Integration
The 21505-04-48-10-02 is part of the Bently Nevada 7200 series and integrates with compatible proximitors and monitoring systems. The 8 mm tip and 3/8-24 thread are standard for many industrial applications. The 1.0 metre cable length with miniature coaxial connector matches typical extension cable interfaces.
Selection Guide & Purchasing Advice
For reliable vibration monitoring, choose the Bently Nevada 21505-04-48-10-02 for its proven accuracy and durability. AutoDCSTech stocks this probe in new, factory-sealed condition with a 12-month warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering. Our team can help confirm compatibility with your existing Bently Nevada system.
Availability & Condition at AutoDCSTech
| Part Number | 21505-04-48-10-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
