Advanced Shaft Monitoring Solution
The Bently Nevada 330101-20-39-10-02-05 3300 XL 8 mm Proximity Probe is a high-precision non-contact eddy-current sensor engineered for accurate shaft vibration and position measurements in mission-critical rotating machinery. As a member of the proven 3300 XL 8 mm Proximity Transducer System, this probe delivers exceptional measurement stability, fast dynamic response, and long-term reliability, making it an ideal choice for modern machinery protection and predictive maintenance programs.
This configuration features a 2.0 in. (50.8 mm) unthreaded length, a 3.9 in. (99.1 mm) overall case length, a 1.0 m (3.3 ft) integrated standard cable, a Miniature ClickLoc™ coaxial connector, and CSA, ATEX, and IECEx hazardous-area approvals. It is designed to integrate seamlessly with compatible 3300 XL Proximitor Sensors and 3300 XL Extension Cables, providing a complete transducer solution for continuous machine health monitoring.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330101-20-39-10-02-05 |
| Product Type | 3300 XL 8 mm Proximity Probe |
| Series | 3300 XL 8 mm Proximity Transducer System |
| Sensing Principle | Non-contact Eddy Current |
| Probe Diameter | 8 mm |
| Thread Type | 3/8-24 UNF |
| Unthreaded Length | 2.0 in. (50.8 mm) |
| Overall Case Length | 3.9 in. (99.1 mm) |
| Integrated Cable Length | 1.0 m (3.3 ft) |
| Cable Type | Standard FEP Cable |
| Connector Type | Miniature ClickLoc™ Coaxial Connector |
| Measurement Range | 2.0 mm (80 mils) |
| Scale Factor | 7.87 V/mm (200 mV/mil) ±5% |
| Frequency Response | 0 Hz to 10 kHz |
| Operating Temperature | -51°C to +177°C (-60°F to +351°F) |
| Agency Approvals | CSA, ATEX, IECEx |
| Dimensions | Approx. Ø8 mm × 99.1 mm |
| Approximate Net Weight | 0.25 kg |
| Approximate Shipping Weight | 0.49 kg |
Industrial Applications
The 330101-20-39-10-02-05 is designed for continuous condition monitoring in demanding industrial environments where equipment reliability is a top priority.
Typical applications include:
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Steam turbine monitoring
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Gas turbine protection systems
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Centrifugal compressors
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Industrial process pumps
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Electric motors
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Power generators
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High-speed gearboxes
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Fans and blowers
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Petrochemical production facilities
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Oil & gas processing plants
Its rugged construction and certified hazardous-area design make it suitable for installations where dependable performance and precise vibration measurement are essential.
Technical FAQs
1. What is the primary function of this proximity probe?
It provides non-contact measurement of shaft vibration, shaft position, and dynamic displacement using eddy-current sensing technology.
2. Which monitoring system is it designed for?
It is designed specifically for the Bently Nevada 3300 XL 8 mm Proximity Transducer System.
3. What is the unthreaded length of this model?
This configuration includes a 2.0-inch (50.8 mm) unthreaded section to accommodate various mounting arrangements.
4. What is the overall case length?
The probe features a 3.9-inch (99.1 mm) overall case length.
5. What cable length is supplied?
It comes with a 1.0 m (3.3 ft) factory-installed standard cable.
6. Which connector is used?
The probe uses a Miniature ClickLoc™ coaxial connector, providing reliable electrical connections and simplified installation.
7. Does this model include hazardous-area approvals?
Yes. The Option 05 configuration includes CSA, ATEX, and IECEx certifications for qualified hazardous environments.
8. Which industrial equipment commonly uses this probe?
It is widely installed on turbines, compressors, motors, generators, pumps, and other critical rotating equipment.
9. Can the probe operate without a Proximitor Sensor?
No. It must be used with a compatible 3300 XL Proximitor Sensor and, where required, a matching extension cable to form a complete transducer system.
10. Is this probe suitable for continuous online monitoring?
Yes. It is designed for permanent installation in machinery protection and condition monitoring systems operating continuously throughout the equipment lifecycle.
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