Industrial Proximity Probe
Brand Information
Brand: Bently Nevada
Product Category: Proximity Probe Sensor
Series: 3300 XL 8 mm Proximity Transducer System Series
Product Type: Non-contact Eddy Current Proximity Probe
The 330800-28-00-031-01-02 is a high-performance proximity probe designed for continuous monitoring of shaft vibration, shaft position, eccentricity, thrust position, differential expansion, and other critical mechanical parameters in rotating equipment. As a key sensing element within the 3300 XL monitoring architecture, this probe provides accurate non-contact measurements and supports long-term machinery protection strategies in demanding industrial environments.
Product Introduction
The 330800-28-00-031-01-02 is engineered to detect the distance between the probe tip and a conductive target surface. Using eddy current sensing technology, the probe converts changes in shaft position into electrical signals that can be processed by monitoring systems and machinery protection equipment.
The probe is designed for installation in rotating machinery where direct contact measurement is not feasible. Its robust mechanical construction, high-temperature tolerance, and excellent signal stability make it suitable for critical applications in power generation, petrochemical processing, oil and gas production, mining operations, and heavy manufacturing industries.
The sensor provides precise measurement capability even when exposed to continuous vibration, oil contamination, moisture, and electromagnetic interference.
The compact design allows installation in confined equipment housings while maintaining high measurement accuracy and long service life.
Product Features
- Non-contact eddy current measurement technology
- High measurement accuracy
- Excellent long-term stability
- Rugged stainless-steel construction
- Strong resistance to industrial contaminants
- Reliable performance under continuous operation
- Suitable for harsh industrial environments
- Fast dynamic response capability
- High immunity to electromagnetic interference
- Compatible with vibration monitoring and machinery protection systems
- Supports predictive maintenance programs
- Designed for critical rotating machinery applications
Technical Specifications
Main Technical Parameters
| Parameter |
Specification |
| Model |
330800-28-00-031-01-02 |
| Product Type |
Proximity Probe |
| Measurement Principle |
Eddy Current Technology |
| Series |
3300 XL 8 mm Series |
| Probe Diameter |
8 mm |
| Probe Length Code |
31 mm |
| Thread Type |
Metric Thread |
| Housing Material |
Stainless Steel |
| Probe Tip Material |
High-Performance Engineering Polymer |
| Cable Type |
Integral Coaxial Cable |
| Connector Type |
Miniature Coaxial Connector |
| Frequency Response |
Wide Dynamic Response |
| Operating Temperature |
-52°C to +177°C |
| Storage Temperature |
-55°C to +200°C |
| Shock Resistance |
Industrial Grade |
| Vibration Resistance |
Industrial Grade |
| Environmental Protection |
Oil and Moisture Resistant |
| Electromagnetic Compatibility |
High EMI Immunity |
| Installation Method |
Threaded Mounting |
| Approximate Dimensions |
8 mm × 8 mm × 65 mm |
| Approximate Weight |
0.16 kg |
Mechanical Specifications
| Parameter |
Value |
| Probe Body Diameter |
8 mm |
| Probe Housing Length |
Approximately 31 mm |
| Connector Diameter |
Approximately 10 mm |
| Total Assembly Length |
Configuration Dependent |
| Housing Material |
Stainless Steel |
| Weight |
Approximately 0.16 kg |
| Probe Tip Diameter |
8 mm |
| Installation Clearance |
Compact Design |
Electrical Specifications
| Parameter |
Value |
| Sensor Technology |
Eddy Current |
| Output Type |
Dynamic Analog Signal |
| Signal Stability |
High |
| Repeatability |
Excellent |
| Linearity |
Industrial Monitoring Grade |
| Measurement Accuracy |
High Precision |
| Noise Immunity |
Excellent |
| Dynamic Range |
Wide Range |
Product Applications
The 330800-28-00-031-01-02 is widely used in industrial machinery monitoring systems where precise shaft movement measurements are required.
Power Generation
- Steam turbines
- Gas turbines
- Hydroelectric generators
- Auxiliary rotating equipment
Oil and Gas Industry
- Gas compressors
- Process compressors
- Pipeline compressors
- Turbine-driven equipment
Petrochemical Plants
- Centrifugal pumps
- Process pumps
- Blowers
- Large rotating process equipment
Manufacturing Industry
- High-speed motors
- Gearboxes
- Industrial fans
- Rolling mill machinery
Marine Applications
- Propulsion systems
- Marine turbines
- Auxiliary machinery monitoring
Product Advantages
High Measurement Accuracy
The probe delivers highly accurate displacement measurements, enabling operators to identify machinery issues before failures occur.
Non-Contact Measurement
Since the sensing element never touches the rotating shaft, there is no mechanical wear between the probe and the target surface.
Excellent Reliability
The rugged industrial construction allows continuous operation for extended periods with minimal maintenance requirements.
Superior Environmental Resistance
The probe performs reliably in environments exposed to oil, dust, vibration, humidity, and temperature fluctuations.
Fast Dynamic Response
Rapid response characteristics make the sensor suitable for monitoring high-speed rotating equipment and transient events.
Reduced Maintenance Costs
Continuous condition monitoring enables predictive maintenance planning and helps prevent unexpected shutdowns.
Enhanced Equipment Protection
Early fault detection minimizes equipment damage and improves overall plant reliability.
Recommended Models from the Same Series
3300 XL Series Related Models
| Model |
Description |
Probe Diameter |
Dimensions (Approx.) |
Weight (kg) |
| 330800-18-00-037-01-02 |
Standard Proximity Probe |
8 mm |
8 × 8 × 70 mm |
0.17 |
| 330800-28-00-031-01-02 |
Compact Proximity Probe |
8 mm |
8 × 8 × 65 mm |
0.16 |
| 330800-50-00-090-00-02 |
Extended Reach Probe |
8 mm |
8 × 8 × 110 mm |
0.22 |
| 330800-90-00-018-03-02 |
Short Body Probe |
8 mm |
8 × 8 × 55 mm |
0.14 |
| 330800-35-00-050-01-02 |
Medium Length Probe |
8 mm |
8 × 8 × 85 mm |
0.19 |
Popular Models from the Same Brand
Industrial Monitoring and Protection Products
| Model |
Product Type |
Main Function |
Dimensions (Approx.) |
Weight (kg) |
| 330780-90-00 |
Proximity Probe |
Shaft Vibration Monitoring |
90 × 8 × 8 mm |
0.20 |
| 330851-02-000-050-90-00-05 |
Extension Cable |
Signal Transmission |
500 mm Cable Length |
0.18 |
| 330130-085-00-00 |
Proximitor Sensor |
Signal Conditioning |
120 × 80 × 40 mm |
0.45 |
| 3500/42M |
Proximitor Monitor Module |
Machinery Protection |
241 × 24 × 240 mm |
0.95 |
| 3500/22M |
Communication Gateway Module |
System Communication |
241 × 24 × 240 mm |
0.88 |
Typical Monitoring Functions Supported
When integrated into a complete machinery protection system, the 330800-28-00-031-01-02 can support monitoring of:
- Radial shaft vibration
- Axial shaft position
- Differential expansion
- Rotor eccentricity
- Thrust position
- Speed-related displacement
- Rotor dynamics
- Bearing condition analysis
- Machinery protection alarms
- Predictive maintenance diagnostics
Summary
The 330800-28-00-031-01-02 is a precision-engineered 3300 XL Series proximity probe developed for continuous condition monitoring of critical rotating machinery. Utilizing advanced eddy current sensing technology, it provides accurate non-contact measurement of shaft displacement and vibration while maintaining exceptional reliability in harsh industrial environments.
Its compact dimensions, durable stainless-steel construction, strong resistance to vibration and contamination, and excellent measurement stability make it an ideal solution for turbines, compressors, generators, pumps, motors, and other high-value rotating assets. Combined with compatible extension cables, signal conditioners, and monitoring modules, this probe forms an essential part of a comprehensive machinery protection and predictive maintenance strategy.
