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- Bently Nevada
- 330903-07-13-70-11-05
- 3300 XL NSv Proximity Probe
- USA
- 8 mm
- 0.2kg
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Bently Nevada 330903-07-13-70-11-05 Proximity Probe Product Introduction, Technical Parameters and Application Guide
1. Product Introduction
The Bently Nevada 330903-07-13-70-11-05 is a high-performance proximity probe designed for continuous monitoring of rotating machinery operating conditions. It belongs to the 3300 XL 8 mm Proximity Transducer System Series, which is widely used for shaft vibration measurement, radial displacement monitoring, and machinery protection applications.
This model uses eddy current sensing technology to provide accurate non-contact measurement between the probe tip and the rotating shaft. The sensor detects changes in the distance between the probe and shaft surface and converts these variations into electrical signals that can be analyzed by monitoring systems.
The 330903-07-13-70-11-05 is designed for demanding industrial applications where measurement stability, long-term reliability, and accurate shaft position monitoring are essential. It is commonly applied on critical rotating equipment such as turbines, compressors, generators, motors, and industrial pumps.
The probe provides continuous information about shaft movement and vibration behavior, helping operators detect abnormal mechanical conditions before they develop into serious failures. It plays an important role in predictive maintenance programs and machinery protection systems.
The compact 8 mm sensing element provides excellent installation flexibility while maintaining reliable measurement performance in industrial environments.
2. Product Brand and Series Information
| Item | Description |
|---|---|
| Brand | Bently Nevada |
| Product Series | 3300 XL 8 mm Proximity Transducer System Series |
| Product Category | Proximity Probe |
| Sensor Type | Eddy Current Displacement Sensor |
| Measurement Principle | Non-contact electromagnetic sensing |
| Main Function | Shaft vibration and displacement monitoring |
| Installation Method | Threaded mechanical installation |
| Application Field | Rotating machinery condition monitoring |
| Typical Equipment | Steam turbines, gas turbines, compressors, generators, motors, pumps |
3. Model Number Explanation
The model number 330903-07-13-70-11-05 represents a specific configuration within the 3300 XL 8 mm proximity probe family.
| Model Code | Description |
|---|---|
| 330903 | 3300 XL 8 mm proximity probe series identification |
| 07 | Probe configuration identification |
| 13 | Mechanical mounting configuration |
| 70 | Probe length and configuration option |
| 11 | Cable and connection configuration |
| 05 | Additional configuration identifier |
The configuration code determines the probe mechanical structure, sensing arrangement, cable design, installation method, and compatibility with different machinery monitoring applications.
This allows the probe to be selected for different machine designs, mounting locations, and operating environments.
4. Detailed Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 330903-07-13-70-11-05 |
| Product Type | Proximity Probe |
| Product Series | 3300 XL 8 mm Proximity Transducer System Series |
| Brand | Bently Nevada |
| Sensor Technology | Eddy current sensing technology |
| Measurement Principle | Non-contact displacement measurement |
| Probe Diameter | 8 mm |
| Measurement Target | Conductive rotating shaft surface |
| Measurement Function | Shaft vibration, radial displacement, axial position monitoring |
| Measurement Range | Approximately 2 mm linear operating range |
| Output Signal | Displacement proportional electrical output |
| Frequency Response | Suitable for dynamic vibration monitoring |
| Operating Temperature Range | Approximately -35°C to +177°C |
| Storage Temperature Range | Approximately -50°C to +120°C |
| Probe Housing Material | Industrial metal corrosion-resistant housing |
| Cable Configuration | Integrated cable assembly |
| Connector Type | Industrial signal connector |
| Mounting Method | Threaded installation |
| Environmental Capability | Suitable for industrial vibration and temperature environments |
| Calibration | Factory calibrated for monitoring system operation |
| Dimensions | Probe diameter approximately 8 mm; cylindrical sensor body; total length depends on configuration |
| Weight | Approximately 0.20 kg ( ) |
5. Product Structure and Working Principle
The 330903-07-13-70-11-05 consists of a precision sensing tip, protective probe housing, integrated cable, and electrical connection interface.
The operating principle is based on eddy current technology.
When the probe is energized, it produces a high-frequency electromagnetic field around the sensing tip. When the rotating shaft changes position, the gap between the shaft and probe changes.
This gap variation affects the electromagnetic field strength. The probe converts this change into an electrical signal proportional to the shaft displacement.
The monitoring system processes the signal to determine the operating condition of the rotating machine.
The non-contact measurement method provides:
- No physical contact with rotating components.
- Reduced mechanical wear.
- Stable operation at high speeds.
- Improved measurement reliability.
- Long service life under continuous operation.
6. Product Applications
6.1 Steam Turbine Monitoring
Steam turbines require accurate shaft monitoring to ensure safe and efficient operation.
The proximity probe is used for:
- Shaft vibration measurement.
- Rotor displacement monitoring.
- Turbine protection.
- Mechanical condition evaluation.
It helps detect:
- Rotor imbalance.
- Shaft movement abnormalities.
- Bearing deterioration.
- Mechanical looseness.
6.2 Gas Turbine Monitoring
Gas turbines operate under high-speed and high-temperature conditions.
The probe supports:
- Rotor position measurement.
- Vibration trend analysis.
- Condition monitoring.
- Equipment protection.
6.3 Compressor Applications
Large compressors require continuous monitoring because unexpected failures can cause significant production losses.
Applications include:
- Shaft vibration detection.
- Rotor movement analysis.
- Mechanical fault diagnosis.
- Preventive maintenance.
6.4 Generator Applications
Generators require stable shaft monitoring to maintain reliable operation.
The probe is applied for:
- Shaft displacement measurement.
- Rotor stability monitoring.
- Vibration analysis.
- Machinery protection.
6.5 Motor and Pump Monitoring
Industrial motors and pumps benefit from continuous shaft monitoring.
Applications include:
- Shaft movement detection.
- Vibration monitoring.
- Alignment evaluation.
- Equipment reliability improvement.
7. Product Advantages
7.1 High Measurement Accuracy
The probe provides precise shaft displacement measurement, allowing monitoring systems to identify small changes in machine operation.
This improves the ability to detect developing faults and supports timely maintenance.
7.2 Non-Contact Sensing Design
The sensor operates without physical contact with the rotating shaft.
Advantages include:
- No mechanical friction.
- Reduced wear.
- Longer operating life.
- Reliable high-speed measurement.
7.3 Excellent Environmental Adaptability
The probe is designed for industrial environments with demanding operating conditions.
It provides stable performance under:
- Continuous vibration.
- Temperature variation.
- Long operating cycles.
- Heavy machinery conditions.
7.4 Flexible Installation Capability
The compact 8 mm probe design allows installation in areas with limited space.
Benefits include:
- Easy integration.
- Flexible mounting options.
- Convenient replacement.
- Compatibility with various rotating machines.
7.5 Supports Predictive Maintenance
The probe provides continuous machine condition data.
Main benefits:
- Reduced unexpected shutdowns.
- Improved equipment availability.
- Optimized maintenance planning.
- Increased operational safety.
8. Recommended Same Series or Related Models
| Model | Product Series | Main Parameters | Dimensions | Weight kg ( ) | Application |
|---|---|---|---|---|---|
| 330903-07-13-10-11-05 | 3300 XL 8 mm Series | 8 mm proximity probe with similar configuration and shorter length | Diameter 8 mm, compact cylindrical structure | 0.18 kg ( ) | General rotating equipment |
| 330903-04-13-10-12-05 | 3300 XL 8 mm Series | 8 mm probe with standard cable configuration | Diameter 8 mm | 0.18 kg ( ) | Turbine and compressor monitoring |
| 330903-05-16-05-02-00 | 3300 XL 8 mm Series | Standard sensing configuration with alternative mounting design | Diameter 8 mm | 0.15 kg ( ) | Industrial machinery |
| 330903-01-07-10-12-05 | 3300 XL 8 mm Series | Standard proximity probe configuration | Diameter 8 mm | 0.18 kg ( ) | Machinery condition monitoring |
| 330930-040-00-00 | 3300 XL Extension Cable Series | Extension cable for proximity probe systems | Cable length varies | 0.25 kg ( ) | Remote installation applications |
9. Recommended Popular Models from the Same Brand
| Model | Product Series | Main Parameters | Dimensions | Weight kg ( ) | Application |
|---|---|---|---|---|---|
| 3300 XL 8 mm Proximity Probe | 3300 XL Series | 8 mm sensing element, accurate shaft displacement monitoring | Diameter 8 mm | 0.15 kg ( ) | Turbines and compressors |
| 3300 XL 11 mm Proximity Probe | 3300 XL Series | Larger sensing diameter for special monitoring applications | Diameter approximately 11 mm | 0.20 kg ( ) | Heavy rotating equipment |
| 3300 XL Extension Cable | 3300 XL Series | Stable signal transmission cable for sensor connection | Various cable lengths | 0.25 kg ( ) | Remote sensor systems |
| 3500/42M Proximity Monitor | 3500 Machinery Protection System Series | Multi-channel vibration and displacement monitoring module | Standard rack module structure | 1.20 kg ( ) | Machinery protection |
| 3500/25 Enhanced Keyphasor Module | 3500 Machinery Protection System Series | Rotor speed and phase reference measurement module | Standard rack size | 0.90 kg ( ) | Speed and phase monitoring |
10. Product Selection Guide
| Application Requirement | Recommended Model |
|---|---|
| Standard shaft vibration monitoring | 330903-07-13-70-11-05 |
| General rotating equipment monitoring | 3300 XL 8 mm Proximity Probe Series |
| High-speed turbine and compressor monitoring | 3300 XL 8 mm Probe Series |
| Remote probe installation | 3300 XL Extension Cable Series |
| Complete machinery protection | 3500 Machinery Protection System Series |
11. Product Summary
The Bently Nevada 330903-07-13-70-11-05 is a precision proximity probe designed for reliable monitoring of critical rotating machinery.
As part of the 3300 XL 8 mm Proximity Transducer System Series, it provides accurate shaft vibration and displacement measurement through proven eddy current sensing technology.
The product combines high measurement accuracy, non-contact operation, compact installation design, stable signal output, and strong industrial adaptability.
It is suitable for applications requiring continuous monitoring, equipment protection, and predictive maintenance.
The 330903-07-13-70-11-05 helps improve machinery reliability, reduce maintenance costs, prevent unexpected failures, and support safe and efficient operation of industrial rotating equipment.