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- Bently Nevada
- 330904-00-25-05-02-05
- 3300 XL NSv Proximity Probe
- USA
- 8 mm
- 0.16kg
- Xiamen, China
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Bently Nevada 330904-00-25-05-02-05 Proximity Probe Product Introduction, Technical Parameters and Application Guide
1. Product Introduction
The Bently Nevada 330904-00-25-05-02-05 is a high-precision 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, displacement monitoring, and machinery protection applications.
The probe is based on eddy current sensing technology and provides accurate non-contact measurement between the probe tip and the rotating shaft. By measuring changes in the gap distance between the probe and the conductive shaft surface, the sensor converts mechanical movement into an electrical signal proportional to shaft displacement.
The 330904-00-25-05-02-05 is designed for industrial equipment that requires stable measurement performance, reliable signal transmission, and long-term operating capability. It is commonly used in critical rotating machinery such as steam turbines, gas turbines, compressors, generators, motors, and industrial pumps.
The probe continuously monitors shaft vibration, radial displacement, and mechanical movement. The collected condition information helps identify abnormal machine behavior, improve equipment reliability, and support predictive maintenance strategies.
The compact 8 mm sensing element provides excellent installation flexibility. It can be installed in areas with limited mounting space while maintaining accurate measurement capability and stable operation under industrial conditions.
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 Technology | Non-contact electromagnetic sensing |
| Main Function | Shaft vibration and displacement monitoring |
| Installation Method | Threaded mechanical installation |
| Application Field | Rotating machinery condition monitoring |
| Typical Equipment | Turbines, compressors, generators, motors, pumps |
3. Model Number Explanation
The model number 330904-00-25-05-02-05 represents a specific configuration within the 3300 XL 8 mm proximity probe family.
| Model Code | Description |
|---|---|
| 330904 | 3300 XL 8 mm proximity probe series identification |
| 00 | Standard configuration identifier |
| 25 | Mechanical configuration option |
| 05 | Probe length configuration |
| 02 | Cable and connector configuration |
| 05 | Special configuration identifier |
The configuration code defines the probe mechanical structure, installation style, cable arrangement, and application characteristics.
This configuration is suitable for rotating machinery that requires accurate shaft displacement measurement and reliable vibration monitoring.
4. Detailed Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 330904-00-25-05-02-05 |
| 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 |
| Target Material | Conductive rotating shaft surface |
| Measurement Function | Shaft vibration, radial displacement, axial position monitoring |
| Linear Measurement Range | Approximately 2 mm |
| Output Signal | Displacement proportional electrical output |
| Frequency Response | Suitable for dynamic vibration measurement |
| Operating Temperature Range | Approximately -35°C to +177°C |
| Storage Temperature Range | Approximately -50°C to +120°C |
| Probe Housing Material | Industrial corrosion-resistant metal housing |
| Cable Configuration | Integrated cable assembly |
| Connector Type | Industrial signal connector |
| Mounting Method | Threaded installation |
| Environmental Capability | Suitable for vibration, temperature variation, and industrial environments |
| Calibration | Factory calibrated for monitoring system compatibility |
| Dimensions | Probe diameter approximately 8 mm; cylindrical structure; compact probe configuration |
| Weight | Approximately 0.16 kg ( ) |
5. Product Structure and Working Principle
The 330904-00-25-05-02-05 consists of a sensing tip, protective metal housing, integrated cable assembly, and electrical connection interface.
The product operates based on eddy current sensing technology.
When the probe receives electrical power, it generates a high-frequency electromagnetic field around the sensing tip. The rotating shaft changes the distance between the shaft surface and the probe during operation.
The gap variation changes the electromagnetic field intensity. The sensor converts this change into an electrical output signal that represents the amount of shaft displacement.
The monitoring system analyzes the signal to evaluate machine condition and detect abnormal mechanical behavior.
The non-contact measurement principle provides:
- No physical contact with rotating parts.
- Reduced mechanical wear.
- Accurate measurement during high-speed operation.
- Stable signal output.
- Extended service life.
6. Product Applications
6.1 Steam Turbine Monitoring
Steam turbines require accurate monitoring of rotor movement and shaft vibration.
The proximity probe is used for:
- Shaft vibration measurement.
- Rotor displacement monitoring.
- Turbine protection.
- Operating condition evaluation.
It helps detect:
- Rotor imbalance.
- Shaft misalignment.
- Bearing degradation.
- Excessive vibration.
6.2 Gas Turbine Monitoring
Gas turbines operate under high-speed and high-temperature conditions.
Applications include:
- Rotor position monitoring.
- Shaft movement measurement.
- Vibration analysis.
- Fault prevention.
6.3 Compressor Monitoring
Compressors require reliable monitoring for continuous operation.
The probe supports:
- Shaft displacement measurement.
- Rotor movement analysis.
- Mechanical condition monitoring.
- Maintenance optimization.
6.4 Generator Monitoring
Generators require stable shaft monitoring to ensure reliable performance.
Applications include:
- Rotor displacement measurement.
- Shaft vibration analysis.
- Mechanical stability monitoring.
- Protection system input.
6.5 Motor and Pump Monitoring
Industrial motors and pumps use proximity probes to improve equipment reliability.
Applications include:
- Shaft movement detection.
- Vibration monitoring.
- Alignment checking.
- Failure prevention.
7. Product Advantages
7.1 Accurate Shaft Measurement
The probe provides precise measurement of shaft movement and vibration.
Advantages:
- Detects small mechanical changes.
- Improves equipment condition analysis.
- Provides reliable monitoring information.
- Supports maintenance planning.
7.2 Non-Contact Sensing Technology
The probe measures shaft movement without direct contact.
Benefits:
- Eliminates mechanical friction.
- Reduces component wear.
- Suitable for high-speed equipment.
- Extends operating life.
7.3 Stable Long-Term Performance
The probe maintains reliable measurement performance during continuous operation.
Advantages:
- Stable output signals.
- Consistent monitoring data.
- Improved fault identification.
- Suitable for demanding environments.
7.4 Compact Mechanical Design
The 8 mm probe structure provides installation flexibility.
Benefits:
- Requires limited mounting space.
- Easy system integration.
- Flexible installation options.
- Suitable for different equipment layouts.
7.5 Improves Machinery Reliability
The probe supports predictive maintenance applications.
Benefits:
- Reduces unexpected downtime.
- Improves equipment availability.
- Helps optimize maintenance schedules.
- Enhances operating safety.
8. Recommended Same Series or Related Models
| Model | Product Series | Main Parameters | Dimensions | Weight kg ( ) | Application |
|---|---|---|---|---|---|
| 330904-00-25-05-02-00 | 3300 XL 8 mm Series | Similar 8 mm proximity probe standard configuration | Diameter 8 mm | 0.16 kg ( ) | General machinery monitoring |
| 330904-00-24-10-02-05 | 3300 XL 8 mm Series | Extended configuration proximity probe | Diameter 8 mm | 0.18 kg ( ) | Turbine and compressor monitoring |
| 330904-00-18-10-01-05 | 3300 XL 8 mm Series | Precision displacement monitoring probe | Diameter 8 mm | 0.17 kg ( ) | Critical rotating equipment |
| 330904-00-12-10-01-CN | 3300 XL 8 mm Series | Industrial configuration probe | Diameter 8 mm | 0.17 kg ( ) | Industrial machinery |
| 330904-00-10-10-01-05 | 3300 XL 8 mm Series | Standard high-accuracy probe | Diameter 8 mm | 0.16 kg ( ) | Compressor and turbine 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, precision shaft displacement measurement | Diameter 8 mm | 0.15 kg ( ) | Turbines and compressors |
| 3300 XL 11 mm Proximity Probe | 3300 XL Series | Larger sensing diameter for special machinery monitoring | Diameter approximately 11 mm | 0.20 kg ( ) | Large rotating equipment |
| 3300 XL Extension Cable | 3300 XL Series | Signal extension cable for proximity systems | Various lengths | 0.25 kg ( ) | Remote installation |
| 3500/42M Proximity Monitor | 3500 Machinery Protection System Series | Multi-channel vibration and displacement monitoring | Standard rack module | 1.20 kg ( ) | Machinery protection |
| 3500/25 Enhanced Keyphasor Module | 3500 Machinery Protection System Series | Rotor speed and phase reference monitoring | Standard rack size | 0.90 kg ( ) | Rotational speed monitoring |
10. Product Selection Guide
| Application Requirement | Recommended Model |
|---|---|
| Standard shaft vibration monitoring | 330904-00-25-05-02-05 |
| Turbine vibration monitoring | 3300 XL 8 mm Proximity Probe Series |
| Compressor displacement monitoring | 3300 XL 8 mm Series |
| Remote sensor installation | 3300 XL Extension Cable Series |
| Complete machinery protection | 3500 Machinery Protection System Series |
11. Product Summary
The Bently Nevada 330904-00-25-05-02-05 is a reliable and accurate proximity probe designed for monitoring critical rotating machinery.
As part of the 3300 XL 8 mm Proximity Transducer System Series, it provides precise shaft vibration and displacement measurement through eddy current sensing technology.
The product combines accurate measurement performance, non-contact operation, compact design, stable signal transmission, and strong industrial adaptability.
It is suitable for applications requiring continuous condition monitoring, machinery protection, and predictive maintenance.
The 330904-00-25-05-02-05 helps improve equipment reliability, reduce maintenance costs, prevent unexpected failures, and support safe and efficient operation of industrial rotating machinery.