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- Bently Nevada
- 330904-00-03-70-01-CN
- 3300 XL NSv Proximity Probe
- USA
- 8 mm
- 0.18kg
- Xiamen, China
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Bently Nevada 330904-00-03-70-01-CN Proximity Probe Product Introduction, Technical Parameters and Application Guide
1. Product Introduction
The Bently Nevada 330904-00-03-70-01-CN 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 applied in industrial equipment condition monitoring, shaft vibration measurement, and machinery protection systems.
The probe uses eddy current sensing technology to provide accurate non-contact measurement between the sensor tip and the rotating shaft. By detecting changes in the distance between the probe and the conductive shaft surface, the device generates proportional electrical signals that represent shaft displacement and vibration characteristics.
The 330904-00-03-70-01-CN is designed for applications where accurate measurement, stable signal performance, and long-term reliability are required. It is suitable for monitoring critical rotating equipment such as turbines, compressors, generators, motors, and industrial pumps.
The probe continuously measures shaft movement and vibration behavior, allowing operators to identify abnormal machine conditions at an early stage. It plays an important role in predictive maintenance strategies by reducing unexpected equipment failures, improving machine availability, and increasing operational safety.
The compact 8 mm sensing design provides installation flexibility and allows use in locations where mounting space is limited while maintaining excellent measurement accuracy and stability.
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 measurement |
| Installation Method | Threaded mounting installation |
| Application Field | Rotating machinery condition monitoring |
| Typical Equipment | Steam turbines, gas turbines, compressors, generators, motors, pumps |
3. Model Number Explanation
The model number 330904-00-03-70-01-CN represents a specific configuration within the 3300 XL 8 mm proximity probe family.
| Model Code | Description |
|---|---|
| 330904 | 3300 XL 8 mm proximity probe family identification |
| 00 | Standard configuration identifier |
| 03 | Mechanical mounting configuration |
| 70 | Probe length and configuration option |
| 01 | Cable and connector configuration |
| CN | Special configuration identifier |
The configuration code defines the probe mechanical design, sensing arrangement, cable structure, installation method, and compatibility with different monitoring systems.
This configuration allows the probe to be selected according to different machine designs, mounting requirements, and operating environments.
4. Detailed Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 330904-00-03-70-01-CN |
| 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 |
| Linear Measurement Range | Approximately 2 mm |
| 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 corrosion-resistant metal construction |
| Cable Configuration | Integrated cable assembly |
| Connector Type | Industrial signal connector |
| Mounting Method | Threaded installation |
| Environmental Capability | Suitable for industrial vibration, temperature, and mechanical stress conditions |
| Calibration | Factory calibrated for monitoring system compatibility |
| Dimensions | Probe diameter approximately 8 mm; cylindrical probe structure; total length depends on configuration |
| Weight | Approximately 0.18 kg ( ) |
5. Product Structure and Working Principle
The 330904-00-03-70-01-CN consists of a sensing tip, protective probe body, integrated cable assembly, and electrical connection interface.
The operating principle is based on eddy current sensing technology.
When the probe receives power, it generates a high-frequency electromagnetic field around the sensing area. When the rotating shaft moves relative to the probe, the gap between the shaft surface and probe tip changes.
The change in gap distance modifies the electromagnetic field strength. The probe converts this variation into an electrical output signal proportional to shaft displacement.
The monitoring system processes the signal to evaluate machine operating conditions and identify possible mechanical problems.
The non-contact measurement method provides:
- No physical contact with rotating parts.
- Reduced mechanical wear.
- High-speed measurement capability.
- Stable long-term operation.
- Reliable monitoring accuracy.
6. Product Applications
6.1 Steam Turbine Monitoring
Steam turbines require precise shaft monitoring because rotor movement directly affects machine efficiency and operational safety.
The proximity probe is used for:
- Shaft vibration measurement.
- Rotor displacement monitoring.
- Turbine protection.
- Mechanical condition evaluation.
It helps detect:
- Rotor imbalance.
- Shaft misalignment.
- Bearing wear.
- Excessive shaft movement.
6.2 Gas Turbine Monitoring
Gas turbines operate under high-speed and high-temperature conditions.
The product supports:
- Rotor position monitoring.
- Vibration analysis.
- Equipment protection.
- Preventive maintenance programs.
6.3 Compressor Monitoring
Compressors require continuous monitoring to maintain reliable operation.
Applications include:
- Shaft displacement measurement.
- Rotor movement analysis.
- Mechanical fault detection.
- Maintenance planning.
6.4 Generator Applications
Generators depend on accurate shaft condition measurement.
Typical applications:
- Rotor displacement monitoring.
- Shaft vibration measurement.
- Mechanical stability analysis.
- Protection system input.
6.5 Motor and Pump Monitoring
Industrial motors and pumps require reliable condition monitoring.
Applications include:
- Shaft movement detection.
- Vibration monitoring.
- Alignment evaluation.
- Equipment reliability improvement.
7. Product Advantages
7.1 High Measurement Accuracy
The probe provides accurate shaft displacement measurement, allowing monitoring systems to detect small changes in machine operation.
This improves early fault identification and helps maintenance teams make better decisions.
7.2 Non-Contact Sensing Technology
The sensor operates without direct contact with the rotating shaft.
Advantages include:
- No mechanical friction.
- Reduced wear.
- Longer operating life.
- Suitable for high-speed machinery.
7.3 Excellent Signal Stability
The probe provides consistent output signals under demanding industrial conditions.
It maintains reliable performance during:
- Continuous vibration.
- Temperature fluctuations.
- Long operation periods.
- Heavy equipment operation.
7.4 Compact and Flexible Installation
The 8 mm probe structure provides installation flexibility.
Benefits include:
- Suitable for limited installation spaces.
- Easy system integration.
- Convenient replacement.
- Flexible mounting options.
7.5 Supports Predictive Maintenance
The probe provides continuous machine condition information.
Benefits include:
- Reduced unexpected downtime.
- Improved equipment reliability.
- Optimized maintenance schedules.
- Enhanced operational safety.
8. Recommended Same Series or Related Models
| Model | Product Series | Main Parameters | Dimensions | Weight kg ( ) | Application |
|---|---|---|---|---|---|
| 330904-00-03-10-02-00 | 3300 XL 8 mm Series | Standard 8 mm proximity probe configuration | Diameter 8 mm, cylindrical structure | 0.16 kg ( ) | General rotating equipment |
| 330904-00-02-10-02-00 | 3300 XL 8 mm Series | Similar probe configuration with different mounting design | Diameter 8 mm | 0.16 kg ( ) | Turbine monitoring |
| 330903-09-21-05-02-00 | 3300 XL 8 mm Series | Industrial shaft monitoring probe configuration | Diameter 8 mm | 0.15 kg ( ) | Compressor applications |
| 330903-05-16-05-02-00 | 3300 XL 8 mm Series | Standard 8 mm sensing configuration | Diameter 8 mm | 0.15 kg ( ) | Machinery condition monitoring |
| 330930-040-00-00 | 3300 XL Extension Cable Series | Signal extension cable for proximity probe systems | Cable length varies | 0.25 kg ( ) | Remote sensor installation |
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 measurement | Diameter 8 mm | 0.15 kg ( ) | Turbines and compressors |
| 3300 XL 11 mm Proximity Probe | 3300 XL Series | Larger sensing diameter for special shaft monitoring applications | Diameter approximately 11 mm | 0.20 kg ( ) | Heavy rotating equipment |
| 3300 XL Extension Cable | 3300 XL Series | Stable signal transmission 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 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 | 330904-00-03-70-01-CN |
| 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 system | 3500 Machinery Protection System Series |
11. Product Summary
The Bently Nevada 330904-00-03-70-01-CN 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 advanced eddy current sensing technology.
The product combines high measurement accuracy, non-contact operation, compact structure, stable signal performance, and strong environmental adaptability.
It is suitable for applications requiring continuous monitoring, machinery protection, and predictive maintenance.
The 330904-00-03-70-01-CN helps improve equipment reliability, reduce maintenance costs, prevent unexpected failures, and support safe and efficient operation of industrial rotating machinery.