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Effective machinery protection begins with accurate and reliable vibration monitoring. The Bently Nevada 330705-02-18-90-02-00 3300 XL 11 mm Reverse Mounting Probe is a high-performance non-contact displacement sensor designed to provide continuous measurement of shaft vibration, shaft position, rotor displacement, and eccentricity in critical rotating machinery.
As part of the 3300 XL 11 mm Proximity Transducer System, this reverse mounting probe employs advanced eddy current sensing technology to monitor rotating shafts without physical contact. The reverse mounting configuration provides additional installation flexibility for machines where standard front-mounted probes cannot be accommodated due to mechanical constraints or limited mounting space.
The 330705-02-18-90-02-00 features an 11 mm sensing tip, reverse mounting configuration, 9-meter total cable length, rugged industrial construction, and a shipping weight of 1.29 kg. The extended cable design makes it particularly suitable for large industrial installations where the monitoring electronics are located a considerable distance from the machine.
| Parameter | Details |
|---|---|
| Manufacturer | Bently Nevada |
| Model | 330705-02-18-90-02-00 |
| Product Type | 3300 XL 11 mm Reverse Mounting Probe |
| Sensor Technology | Eddy Current Non-Contact Displacement Sensor |
| Product Series | 3300 XL 11 mm Proximity Transducer System |
| Mounting Style | Reverse Mount |
| Probe Diameter | 11 mm |
| Probe Configuration | Reverse Mounting Design |
| Total Length | 9 meters |
| Connector Type | Miniature Coaxial ClickLoc Connector |
| Measurement Functions | Shaft Vibration, Shaft Position, Rotor Displacement |
| Mounting Method | Reverse Threaded Installation |
| Operating Principle | Eddy Current Measurement |
| Dimensions | Total Length: 9 meters |
| Weight | 1.29 kg |
| Environmental Rating | Industrial Grade |
The 330705-02-18-90-02-00 is engineered to provide dependable monitoring performance in demanding industrial applications while supporting installations that require long cable routing.
Key product features include:
The long cable configuration is particularly beneficial for large turbines, compressors, and other installations where monitoring electronics are mounted remotely.
The 330705-02-18-90-02-00 operates using proven eddy current sensing technology.
The sensing element generates a high-frequency electromagnetic field at the probe tip. When positioned near a conductive rotating shaft, eddy currents are induced on the shaft surface. Variations in the shaft-to-probe gap alter the electromagnetic field, producing proportional electrical signals.
These signals are processed by a compatible Proximitor Sensor, allowing continuous monitoring of:
The non-contact operating principle eliminates mechanical wear while providing highly reliable long-term measurements.
The 330705-02-18-90-02-00 is an essential sensing device within machinery protection and predictive maintenance systems.
| Monitoring Function | Description |
|---|---|
| Shaft Vibration Monitoring | Detects abnormal vibration conditions |
| Shaft Position Measurement | Measures radial and axial shaft movement |
| Rotor Displacement Analysis | Monitors dynamic shaft behavior |
| Machinery Protection | Supports alarm and shutdown systems |
| Condition Monitoring | Provides continuous equipment diagnostics |
| Predictive Maintenance | Detects developing mechanical faults early |
Its continuous monitoring capability enables maintenance teams to identify abnormal operating conditions before serious equipment damage occurs.
The 330705-02-18-90-02-00 is widely used in industries requiring reliable monitoring of large rotating machinery.
| Industry | Typical Equipment |
|---|---|
| Power Generation | Steam turbines, gas turbines, generators |
| Oil & Gas | Compressors, turbo-expanders, centrifugal pumps |
| Petrochemical | High-speed process compressors |
| Refining | Rotating process equipment |
| Mining | Grinding mills, crushers, heavy-duty drives |
| Marine | Main propulsion systems and auxiliary machinery |
| Steel Industry | Rolling mills and industrial drive systems |
| Manufacturing | Large rotating production equipment |
The extended cable configuration is ideal for applications where long-distance sensor routing is required.
Correct installation is essential for obtaining maximum measurement accuracy.
Recommended installation procedures include:
Proper installation ensures stable signal transmission and reliable long-term performance.
The 330705-02-18-90-02-00 is designed for integration with complete Bently Nevada machinery protection systems.
| Compatible Component | Function |
|---|---|
| Bently Nevada Proximitor Sensor | Signal conditioning and conversion |
| 3300 XL Extension Cable | Signal transmission and system connection |
| 3300 XL Monitoring Module | Processes vibration and displacement signals |
| Machinery Protection System | Provides equipment protection functions |
| PLC System | Collects machinery condition data |
| DCS Platform | Centralized process monitoring |
| Condition Monitoring Software | Trend analysis and predictive diagnostics |
Together, these components create a comprehensive machinery condition monitoring solution.
| Model | Product Type | Key Feature | Typical Application |
|---|---|---|---|
| 330705-02-18-90-02-00 | 3300 XL 11 mm Reverse Mounting Probe | Reverse mount, 9 m cable | Large industrial installations |
| 330705-02-18-10-02-05 | 3300 XL 11 mm Reverse Mounting Probe | Reverse mount, 1 m cable | Standard machinery monitoring |
| 330705-02-18-10-02-00 | 3300 XL 11 mm Reverse Mounting Probe | Standard reverse mount configuration | General industrial equipment |
| 330704-000-090-50-02-00 | 3300 XL 11 mm Proximity Probe | Standard mount, 5 m cable | Remote installation |
| 330704-000-100-10-01-RU | 3300 XL 11 mm Proximity Probe | 100 mm probe body | Heavy-duty rotating machinery |
It is a reverse mounting proximity probe designed for continuous monitoring of shaft vibration, shaft position, and rotor displacement in industrial rotating machinery.
The 9-meter cable allows greater installation flexibility by enabling the monitoring electronics to be located farther from the monitored equipment, making it suitable for large industrial installations.
It is commonly installed on steam turbines, gas turbines, compressors, centrifugal pumps, generators, electric motors, and other critical rotating machinery.
The probe is typically integrated with a compatible Bently Nevada Proximitor Sensor, extension cable, 3300 XL monitoring module, machinery protection system, PLC or DCS platform, and condition monitoring software.
The Bently Nevada 330705-02-18-90-02-00 3300 XL 11 mm Reverse Mounting Probe is a high-performance industrial sensor designed for accurate non-contact monitoring of shaft vibration, shaft displacement, and shaft position in demanding rotating machinery applications.
Featuring an 11 mm sensing tip, reverse mounting configuration, extended 9-meter cable, rugged industrial construction, and a weight of 1.29 kg, it provides reliable measurement accuracy, flexible installation, and seamless integration into industrial machinery protection systems.
Whether installed in power generation, oil and gas, petrochemical processing, mining, marine engineering, or heavy manufacturing facilities, the 330705-02-18-90-02-00 offers a dependable solution for enhancing equipment reliability, supporting predictive maintenance programs, and extending the service life of critical rotating assets.