


Product Overview
The Bently Nevada 21504-000-012-05-02 7200 8 mm Standard Mount Probe is a high-precision non-contact proximity probe developed for the 7200 Series Proximity Transducer System. Designed for accurate shaft displacement and vibration measurement, this probe provides dependable signal stability, excellent repeatability, and long service life in rotating machinery applications.
This configuration features an 8 mm probe diameter, 0.0 in. unthreaded length, 1.2 in. (30.5 mm) overall case length, a 0.5 m (20 in.) integrated cable, and a miniature male coaxial connector. It is designed to operate with compatible 7200 Series extension cables and Proximitor sensors, forming a complete transducer system with a 2.0 mm (80 mil) linear measurement range.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 21504-000-012-05-02 |
| Product Type | 7200 8 mm Standard Mount Probe |
| Series | 7200 Proximity Transducer System |
| Probe Diameter | 8 mm |
| Mounting Style | Standard Mount |
| Measurement Principle | Eddy Current, Non-contact |
| Unthreaded Length | 0.0 in. |
| Overall Case Length | 1.2 in. (30.5 mm) |
| Integrated Cable Length | 0.5 m (20 in.) |
| Connector Type | Miniature Male Coaxial Connector |
| Thread Size | 3/8-24 UNF |
| Linear Measurement Range | 2.0 mm (80 mils) |
| Frequency Response | 0 Hz to 10 kHz |
| Operating Temperature | -35°C to +177°C (-31°F to +351°F) |
| Minimum Cable Bend Radius | 25.4 mm (1.0 in.) |
| Approximate Dimensions | Ø8 mm Probe Tip × 30.5 mm Case Length |
| Approximate Product Weight | 0.10 kg |
| Country of Origin | USA |
Typical Applications
The 21504-000-012-05-02 is designed for continuous non-contact measurement of shaft vibration and shaft position in rotating equipment where reliable long-term performance is required.
Typical applications include:
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Steam turbines
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Gas turbines
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Centrifugal compressors
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Pumps
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Electric motors
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Generators
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Gearboxes
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Fans
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Blowers
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Process machinery
Its 1.2-inch case length provides additional installation flexibility while maintaining accurate and stable measurement performance.
Technical FAQs
1. What type of probe is the 21504-000-012-05-02?
It is a 7200 Series 8 mm Standard Mount Proximity Probe designed for non-contact shaft displacement and vibration measurement.
2. What is the probe diameter?
The sensing tip diameter is 8 mm.
3. What is the overall case length?
The probe has a 1.2 in. (30.5 mm) overall case length.
4. What cable length is included?
This model is supplied with a 0.5 m (20 in.) integrated cable.
5. Which connector is fitted?
It includes a miniature male coaxial connector.
6. What mounting thread does the probe use?
The probe uses a 3/8-24 UNF standard threaded body.
7. What is the measurement range?
The complete transducer system provides a 2.0 mm (80 mil) linear measurement range.
8. What operating temperature is supported?
The probe operates within a temperature range of -35°C to +177°C (-31°F to +351°F).
9. Which components are compatible with this probe?
It is intended for use with compatible 7200 Series extension cables and 7200 Proximitor sensors.
10. Is this probe suitable for continuous machinery monitoring?
Yes. It is designed for permanent installation and continuous monitoring of rotating equipment.