
Product Overview
Reliable machinery protection depends on accurate, continuous monitoring of shaft vibration and position. The Bently Nevada 330705-02-18-10-02-05 3300 XL 11 mm Reverse Mounting Probe is a high-precision non-contact displacement sensor engineered for industrial condition monitoring applications where a reverse mounting configuration is required.
As part of the 3300 XL 11 mm Proximity Transducer System, this probe uses advanced eddy current sensing technology to continuously measure shaft vibration, shaft position, eccentricity, and rotor displacement. Its reverse mounting structure allows installation from the opposite side of the mounting bracket, providing greater flexibility for equipment with limited installation space or special mechanical layouts.
The 330705-02-18-10-02-05 combines an 11 mm sensing tip, reverse mounting design, 1-meter total cable length, rugged industrial construction, and lightweight 0.17 kg design, making it an ideal solution for turbines, compressors, generators, motors, pumps, and other mission-critical rotating machinery.
Technical Specifications
| Parameter |
Details |
| Manufacturer |
Bently Nevada |
| Model |
330705-02-18-10-02-05 |
| 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 |
1 meter |
| 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: 1 meter |
| Weight |
0.17 kg |
| Industrial Rating |
Industrial Grade |
Product Features
The 330705-02-18-10-02-05 is designed to provide dependable vibration monitoring in demanding industrial environments.
Its primary features include:
- Reverse mounting configuration for specialized installation requirements
- High-precision non-contact shaft displacement measurement
- Continuous online condition monitoring capability
- Rugged construction suitable for harsh industrial environments
- Excellent resistance to vibration, oil, dust, and electromagnetic interference
- Stable signal output over long operating periods
- Full compatibility with Bently Nevada 3300 XL monitoring systems
The reverse mounting design offers additional flexibility for machines with restricted mounting access.
Working Principle
The 330705-02-18-10-02-05 operates using proven eddy current sensing technology.
The sensing tip generates a controlled electromagnetic field. When positioned close to a conductive rotating shaft, eddy currents are induced on the shaft surface. As the shaft moves during operation, changes in the probe-to-target distance alter the electromagnetic field strength.
These changes are converted into electrical signals that are processed by a compatible Proximitor Sensor, providing accurate measurements of:
- Shaft vibration
- Shaft position
- Rotor displacement
- Shaft eccentricity
- Dynamic machine movement
Since there is no physical contact between the probe and the rotating shaft, the sensor provides excellent durability and measurement stability.
Role in Industrial Machinery Protection
The 330705-02-18-10-02-05 serves as an important sensing device within machinery protection and predictive maintenance systems.
| Monitoring Function |
Description |
| Shaft Vibration Monitoring |
Detects abnormal rotor vibration |
| Shaft Position Measurement |
Measures radial and axial movement |
| Rotor Displacement Analysis |
Tracks shaft movement during operation |
| Machinery Protection |
Supports alarm and shutdown systems |
| Condition Monitoring |
Enables continuous equipment diagnostics |
| Predictive Maintenance |
Identifies mechanical issues before failure |
Continuous monitoring helps reduce maintenance costs while improving equipment reliability.
Industrial Applications
The 330705-02-18-10-02-05 is suitable for a broad range of industrial applications involving critical rotating equipment.
| Industry |
Typical Equipment |
| Power Generation |
Steam turbines, gas turbines, generators |
| Oil & Gas |
Compressors, pumps, turbo-expanders |
| Petrochemical |
Process compressors and rotating machinery |
| Refining |
High-speed rotating equipment |
| Mining |
Crushers, grinding mills, heavy-duty motors |
| Steel Industry |
Rolling mills and drive systems |
| Marine |
Propulsion equipment and auxiliary machinery |
| Manufacturing |
High-speed industrial production equipment |
Its reverse mounting capability makes it especially valuable for complex machine designs.
Installation and System Integration
Proper installation is essential to obtain accurate monitoring results.
Recommended installation procedures include:
- Verify the reverse mounting configuration before installation.
- Install the probe securely using the specified threaded mounting arrangement.
- Adjust the probe gap according to system requirements.
- Route the cable carefully to prevent excessive bending.
- Connect the probe to a compatible Proximitor Sensor.
- Verify output signals during commissioning.
- Perform calibration before placing equipment into service.
Proper installation improves both measurement accuracy and operational reliability.
Compatible System Components
The 330705-02-18-10-02-05 is designed for integration into complete machinery protection systems.
| Compatible Component |
Function |
| Bently Nevada Proximitor Sensor |
Signal conditioning and conversion |
| 3300 XL Extension Cable |
Connects the probe to monitoring electronics |
| 3300 XL Monitoring Module |
Processes vibration and displacement data |
| Machinery Protection System |
Protects critical rotating equipment |
| PLC System |
Receives equipment status information |
| DCS Platform |
Centralized machine monitoring |
| Condition Monitoring Software |
Trend analysis and fault diagnostics |
Together, these components provide comprehensive condition monitoring for industrial rotating machinery.
Recommended Alternative Models
| Model |
Product Type |
Key Feature |
Typical Application |
| 330705-02-18-10-02-05 |
3300 XL 11 mm Reverse Mounting Probe |
Reverse mounting configuration |
Limited installation space |
| 330705-02-18-10-02-00 |
3300 XL 11 mm Reverse Mounting Probe |
Standard reverse mount version |
General industrial monitoring |
| 330704-00-070-10-02-00 |
3300 XL 11 mm Proximity Probe |
Standard mounting design |
Rotating machinery |
| 330704-005-040-10-02-00 |
3300 XL 11 mm Proximity Probe |
Compact 40 mm housing |
Compact installations |
| 330704-000-090-50-02-00 |
3300 XL 11 mm Proximity Probe |
5-meter cable configuration |
Remote installation applications |
Key Advantages
- Reverse mounting design for flexible installation
- High-accuracy non-contact shaft vibration monitoring
- Stable long-term measurement performance
- Durable industrial-grade construction
- Excellent resistance to harsh operating environments
- Supports predictive maintenance programs
- Fully compatible with Bently Nevada 3300 XL systems
- Improves machinery reliability and minimizes unplanned downtime
Technical FAQs
What is the Bently Nevada 330705-02-18-10-02-05 used for?
It is used for non-contact measurement of shaft vibration, shaft position, and rotor displacement in industrial rotating machinery requiring a reverse mounting probe configuration.
What is the advantage of a reverse mounting probe?
A reverse mounting probe allows installation from the opposite side of the mounting bracket, making it ideal for machinery with restricted access or unique mechanical layouts.
Which machines commonly use this probe?
It is widely used on steam turbines, gas turbines, compressors, centrifugal pumps, generators, electric motors, and other critical rotating equipment.
Which components are required for a complete monitoring system?
The probe typically operates together with a compatible Bently Nevada Proximitor Sensor, extension cable, 3300 XL monitoring module, machinery protection system, PLC or DCS platform, and condition monitoring software.
Conclusion
The Bently Nevada 330705-02-18-10-02-05 3300 XL 11 mm Reverse Mounting Probe is a high-performance industrial sensor designed for precise non-contact monitoring of shaft vibration, shaft displacement, and shaft position in rotating machinery requiring reverse installation.
With its 11 mm sensing tip, reverse mounting configuration, 1-meter total cable length, rugged industrial construction, and lightweight 0.17 kg design, it delivers exceptional measurement accuracy and dependable long-term performance in demanding industrial environments.
Whether installed in power generation, oil and gas, petrochemical processing, mining, marine, or manufacturing facilities, the 330705-02-18-10-02-05 provides a reliable solution for enhancing equipment reliability, supporting predictive maintenance, and maximizing the operational life of critical rotating assets.