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- Bently Nevada
- 330904-02-20-05-01-00
- 3300 XL NSv Proximity Probe
- USA
- 8 mm
- 0.17kg
- Xiamen, China
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Bently Nevada 330904-02-20-05-01-00 Proximity Probe Product Introduction, Technical Parameters and Application Guide
1. Product Introduction
The Bently Nevada 330904-02-20-05-01-00 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.
This proximity probe adopts eddy current sensing technology to achieve accurate non-contact measurement between the probe tip and the rotating shaft surface. By detecting changes in the electromagnetic field caused by shaft movement, the probe converts mechanical displacement into an electrical output signal that can be analyzed by monitoring systems.
The 330904-02-20-05-01-00 is designed for industrial environments where high reliability, stable measurement performance, and long operating life are required. It is commonly installed on critical rotating equipment such as steam turbines, gas turbines, compressors, generators, motors, and industrial pumps.
The probe provides continuous measurement of shaft vibration, radial displacement, and axial movement. The collected data helps operators evaluate equipment health, detect abnormal operating conditions, and perform maintenance planning before serious mechanical failures occur.
The 8 mm sensing element provides excellent sensitivity while maintaining a compact physical structure. This allows installation in locations with limited space while still providing accurate and stable measurement performance.
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 Method | Non-contact electromagnetic sensing |
| Main Function | Shaft vibration and displacement monitoring |
| Installation Method | Threaded mounting installation |
| Application Field | Industrial rotating machinery condition monitoring |
| Typical Equipment | Turbines, compressors, generators, motors, pumps |
3. Model Number Explanation
The model number 330904-02-20-05-01-00 represents a specific configuration within the 3300 XL 8 mm proximity probe family.
| Model Code | Description |
|---|---|
| 330904 | 3300 XL 8 mm proximity probe series identifier |
| 02 | Probe configuration option |
| 20 | Mechanical configuration identifier |
| 05 | Probe length option |
| 01 | Cable and connection configuration |
| 00 | Standard option configuration |
The configuration code defines the probe structure, mechanical installation method, cable arrangement, and application characteristics.
This model is suitable for applications requiring reliable shaft displacement monitoring and continuous vibration measurement.
4. Detailed Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 330904-02-20-05-01-00 |
| 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 mechanical 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 probe structure; compact industrial design |
| Weight | Approximately 0.17 kg ( ) |
5. Product Structure and Working Principle
The 330904-02-20-05-01-00 consists of a sensing tip, protective metal housing, integrated cable assembly, and electrical connection interface.
The operating principle is based on eddy current sensing technology.
When the probe is powered, the sensing tip generates a high-frequency electromagnetic field. During equipment operation, the rotating shaft moves relative to the probe, causing the distance between the shaft surface and the probe tip to change.
The change in gap distance affects the electromagnetic field intensity. The probe converts this variation into an electrical output signal proportional to shaft displacement.
The monitoring system analyzes the signal to determine equipment operating conditions and identify possible mechanical problems.
The non-contact sensing design provides:
- No physical contact with rotating components.
- Reduced mechanical wear.
- Accurate measurement at high rotational speeds.
- Stable signal transmission.
- Long service life.
6. Product Applications
6.1 Steam Turbine Monitoring
Steam turbines require accurate shaft monitoring to maintain safe and efficient operation.
The proximity probe is used for:
- Shaft vibration measurement.
- Rotor displacement monitoring.
- Turbine protection.
- Mechanical condition evaluation.
It helps identify:
- Rotor imbalance.
- Shaft misalignment.
- Bearing wear.
- Excessive vibration.
6.2 Gas Turbine Monitoring
Gas turbines operate under demanding conditions and require stable monitoring solutions.
Applications include:
- Rotor position measurement.
- Shaft vibration monitoring.
- Mechanical fault detection.
- Condition-based maintenance.
6.3 Compressor Monitoring
Compressors require continuous monitoring to avoid unexpected equipment failures.
The probe supports:
- Shaft displacement measurement.
- Rotor movement detection.
- Mechanical performance evaluation.
- Maintenance optimization.
6.4 Generator Monitoring
Generators require accurate shaft condition monitoring.
Applications include:
- Rotor position monitoring.
- Vibration measurement.
- Mechanical stability analysis.
- Protection system feedback.
6.5 Motor and Pump Monitoring
Industrial motors and pumps use proximity probes to improve reliability.
Applications include:
- Shaft movement detection.
- Vibration trend monitoring.
- Alignment checking.
- Equipment protection.
7. Product Advantages
7.1 High Measurement Accuracy
The probe provides accurate shaft displacement measurement.
Advantages:
- Detects small mechanical changes.
- Improves machine condition analysis.
- Provides reliable operating data.
- Supports predictive maintenance.
7.2 Non-Contact Measurement
The probe measures shaft movement without direct physical contact.
Benefits:
- Eliminates mechanical friction.
- Reduces component wear.
- Suitable for high-speed machinery.
- Extends service life.
7.3 Stable Signal Performance
The probe provides reliable measurement output during continuous operation.
Advantages:
- Consistent monitoring data.
- Accurate vibration analysis.
- Reliable operation in industrial environments.
- Reduced measurement errors.
7.4 Compact Installation Structure
The 8 mm sensing design provides flexible installation capability.
Benefits:
- Requires limited installation space.
- Easy integration into monitoring systems.
- Suitable for various machine structures.
- Convenient maintenance replacement.
7.5 Machinery Protection Capability
The probe supports continuous condition monitoring.
Benefits:
- Reduces unexpected downtime.
- Improves equipment reliability.
- Helps optimize maintenance schedules.
- Enhances operational safety.
8. Recommended Same Series or Related Models
| Model | Product Series | Main Parameters | Dimensions | Weight kg ( ) | Application |
|---|---|---|---|---|---|
| 330904-02-20-05-01-05 | 3300 XL 8 mm Series | Similar 8 mm proximity probe configuration | Diameter 8 mm | 0.17 kg ( ) | General machinery monitoring |
| 330904-02-14-05-02-05 | 3300 XL 8 mm Series | Industrial configuration proximity probe | Diameter 8 mm | 0.17 kg ( ) | Turbine monitoring |
| 330904-02-10-70-01-00 | 3300 XL 8 mm Series | Compact industrial proximity probe | Diameter 8 mm | 0.17 kg ( ) | Compressor applications |
| 330904-00-25-10-01-00 | 3300 XL 8 mm Series | Standard high accuracy probe | Diameter 8 mm | 0.17 kg ( ) | Rotating equipment |
| 330904-00-24-10-02-05 | 3300 XL 8 mm Series | Extended configuration probe | Diameter 8 mm | 0.18 kg ( ) | Industrial monitoring |
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, high accuracy 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 | Diameter approximately 11 mm | 0.20 kg ( ) | Large rotating equipment |
| 3300 XL Extension Cable | 3300 XL Series | Extension cable for remote installation | Various lengths | 0.25 kg ( ) | Sensor connection systems |
| 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 ( ) | Speed and phase measurement |
10. Product Selection Guide
| Application Requirement | Recommended Model |
|---|---|
| Standard shaft vibration monitoring | 330904-02-20-05-01-00 |
| Turbine rotor monitoring | 3300 XL 8 mm Proximity Probe Series |
| Compressor displacement monitoring | 3300 XL 8 mm Series |
| Remote installation requirement | 3300 XL Extension Cable Series |
| Complete machinery protection | 3500 Machinery Protection System Series |
11. Product Summary
The Bently Nevada 330904-02-20-05-01-00 is a precision proximity probe designed for accurate and reliable monitoring of critical rotating machinery.
As part of the 3300 XL 8 mm Proximity Transducer System Series, it provides stable shaft vibration and displacement measurement using eddy current sensing technology.
The product combines high measurement accuracy, non-contact operation, compact mechanical design, stable signal transmission, and excellent industrial adaptability.
It is suitable for applications requiring continuous condition monitoring, machinery protection, and predictive maintenance.
The 330904-02-20-05-01-00 helps improve equipment reliability, reduce maintenance costs, prevent unexpected failures, and support safe and efficient operation of industrial rotating machinery.