Rugged Non-Contact Vibration Measurement for Critical Rotating Equipment
The Bently Nevada 21505-00-72-10-02 7200 8 mm Armored Standard Mount Probe is a precision eddy-current proximity probe designed for the Bently Nevada 7200 Series Proximity Transducer System. Built to deliver accurate non-contact measurements of shaft vibration, shaft position, and displacement, this 8 mm probe combines excellent measurement stability with a durable stainless-steel armored cable for dependable operation in harsh industrial environments. It is ideally suited for continuous machinery protection and condition monitoring of turbines, compressors, pumps, motors, and generators.
The 21505-00-72-10-02 features a standard 3/8-24 UNF threaded mounting configuration, a 7.2-inch probe case length, a 1.0-meter armored integral cable, and a miniature male coaxial connector. When paired with compatible 7200 Series extension cables and Proximitor® sensors, it forms a complete transducer system capable of providing highly accurate gap-to-voltage measurements for predictive maintenance and machinery protection.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model | 21505-00-72-10-02 |
| Product Type | 7200 8 mm Armored Standard Mount Probe |
| Series | 7200 Proximity Transducer System |
| Probe Diameter | 8 mm |
| Mounting Style | Standard Mount |
| Thread Type | 3/8-24 UNF |
| Probe Case Length | 7.2 in (182.9 mm) |
| Unthreaded Length | 0 in |
| Integral Cable Length | 1.0 m |
| Cable Protection | Stainless Steel Armored |
| Connector Type | Miniature Male Coaxial Connector |
| Measurement Principle | Eddy Current, Non-Contact |
| Linear Measurement Range | 2.0 mm (80 mils) |
| Frequency Response | 0 Hz to 10 kHz |
| Probe Operating Temperature | -34°C to +177°C |
| System Length | 5 m or 9 m (with compatible extension cable) |
| Approximate Weight | 0.35 kg |
Typical Applications
The 21505-00-72-10-02 is designed for demanding industrial environments where accurate shaft vibration and displacement monitoring are essential.
Typical applications include:
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Steam turbine monitoring
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Gas turbine protection
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Centrifugal compressor vibration measurement
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Generator shaft displacement monitoring
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Industrial motor condition monitoring
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Pump vibration analysis
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Blower shaft position monitoring
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Oil and gas production facilities
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Petrochemical processing plants
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Power generation stations
Product Advantages
Designed for long-term industrial performance, the 21505-00-72-10-02 delivers reliable measurements while protecting the sensing cable against mechanical damage.
Key advantages include:
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Precision 8 mm eddy-current sensing technology
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Heavy-duty stainless-steel armored cable
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Standard 3/8-24 UNF threaded installation
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Excellent resistance to abrasion and vibration
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High-resolution non-contact displacement measurement
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Wide operating temperature range
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Compatible with Bently Nevada 7200 Series transducer systems
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Stable signal output for continuous machinery protection
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Long service life in demanding industrial environments
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Supports predictive maintenance and improved equipment reliability
Technical FAQs
1. What is the primary function of the 21505-00-72-10-02 probe?
The probe measures shaft vibration, shaft position, and displacement using non-contact eddy-current sensing technology for continuous machinery monitoring.
2. Which monitoring system is this probe designed for?
It is designed specifically for the Bently Nevada 7200 Series Proximity Transducer System.
3. What does the "21505" model designation indicate?
The 21505 designation identifies an 8 mm standard mount probe with an armored cable, providing additional mechanical protection compared with non-armored versions.
4. What is the cable length of this configuration?
This model includes a 1.0-meter integral armored cable, identified by the 10 configuration code.
5. What connector is supplied with the probe?
The 02 option specifies a miniature male coaxial connector, enabling secure connection to compatible extension cables and Proximitor sensors.
6. Why is the cable armored?
The stainless-steel armor protects the cable against abrasion, vibration, mechanical impact, and harsh installation conditions, extending overall service life.
7. Can this probe be used alone?
No. It is designed to operate as part of a complete 7200 Series transducer system, including a compatible extension cable and Proximitor® sensor.
8. What are the operating temperature limits?
The probe operates within a temperature range of -34°C to +177°C, making it suitable for demanding industrial environments.
9. Which machinery is best suited for this probe?
It is commonly installed on turbines, compressors, generators, motors, pumps, and other rotating equipment requiring continuous vibration and displacement monitoring.
10. Why choose the Bently Nevada 21505-00-72-10-02?
Its rugged armored construction, extended probe body, precise 8 mm sensing technology, and compatibility with the proven 7200 Series monitoring platform make it an excellent choice for reliable machinery protection in critical industrial applications.
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