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Bently Nevada 990-05-XX-01-00 168251-01 Proximity Transducer System Product Introduction, Technical Specifications, Applications, Advantages, Brand and Series
Product Overview
Model: 990-05-XX-01-00 168251-01
The Bently Nevada 990-05-XX-01-00 168251-01 is a compact proximity transducer system designed for continuous monitoring of rotating machinery shaft conditions. It is mainly used for measuring shaft vibration, shaft displacement, rotor position, and relative movement between the sensing probe and a rotating shaft.
This product belongs to the 990 Series Proximity Transducer System, which is designed for machinery protection and condition monitoring applications where accurate shaft measurement and long-term operational reliability are required.
The system uses eddy current non-contact measurement technology to detect changes in the distance between the probe tip and the rotating shaft surface. Since the probe does not physically contact the shaft, it provides stable measurement performance while eliminating mechanical wear.
The model number 990-05-XX-01-00 168251-01 represents a configurable 990 Series proximity sensing solution. The “XX” configuration allows different probe and installation options depending on specific equipment requirements.
The product is widely used for monitoring critical rotating equipment because it provides accurate information about rotor movement, mechanical stability, and machine operating conditions.
The system can help detect early signs of:
- Excessive shaft vibration
- Rotor imbalance
- Mechanical looseness
- Shaft displacement changes
- Alignment problems
- Abnormal operating conditions
Typical equipment applications include:
- Steam turbines
- Gas turbines
- Compressors
- Pumps
- Motors
- Generators
- Gearboxes
- Industrial rotating machinery
Brand Information
| Item | Description |
|---|---|
| Brand | Bently Nevada |
| Product Type | Proximity Transducer System |
| Series | 990 Series |
| Product Number | 168251-01 |
| Measurement Technology | Eddy Current Non-Contact Sensing |
| Main Application | Rotating Machinery Condition Monitoring |
| Primary Function | Shaft Vibration and Displacement Measurement |
| Installation Type | Industrial Fixed Installation |
The brand provides industrial monitoring equipment designed for machinery protection, vibration analysis, equipment diagnostics, and predictive maintenance applications.
The products are commonly used in industries where equipment reliability, continuous operation, and early fault detection are important.
Product Series Information
990 Series Proximity Transducer System
The 990 Series is a compact proximity monitoring product family developed for direct shaft measurement applications.
Unlike traditional vibration monitoring methods that mainly detect machine casing movement, the 990 Series directly measures shaft movement. This allows more accurate evaluation of rotor behavior and internal mechanical conditions.
The series is designed for continuous operation and provides reliable measurement performance in demanding industrial environments.
Main Features of 990 Series
- Direct shaft displacement measurement
- Eddy current sensing technology
- Non-contact operation
- Compact probe structure
- High measurement accuracy
- Stable signal output
- Fast response characteristics
- Long operating life
- Low maintenance requirements
- Suitable for critical rotating machinery
Product Description
The 990-05-XX-01-00 168251-01 is a proximity transducer system designed to monitor shaft movement without direct mechanical contact.
The system generally consists of:
- Proximity sensing probe
- Extension cable assembly
- Signal conditioning electronics
During operation, the probe generates an electromagnetic field near the shaft surface.
When the shaft moves relative to the probe, the electromagnetic field changes. The system detects these variations and converts them into electrical output signals representing shaft position and movement.
The collected information can be used for:
- Continuous vibration monitoring
- Rotor position evaluation
- Machinery protection
- Predictive maintenance
- Equipment performance analysis
The non-contact sensing principle provides excellent durability because there is no physical friction between the sensor and the rotating shaft.
Working Principle
The 990-05-XX-01-00 168251-01 operates using eddy current displacement measurement technology.
Operating Process
- The probe generates a high-frequency electromagnetic field.
- The rotating shaft interacts with the sensing field.
- Eddy currents are created on the conductive shaft surface.
- Shaft movement changes the electromagnetic characteristics.
- The electronic circuit detects these changes.
- The output signal represents shaft displacement and vibration information.
This operating method provides:
- Accurate measurement
- Fast response
- Stable performance
- Long-term reliability
- Continuous monitoring capability
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 990-05-XX-01-00 168251-01 |
| Product Type | Proximity Transducer System |
| Product Series | 990 Series |
| Technology | Eddy Current Non-Contact Measurement |
| Probe Type | Compact Proximity Probe |
| Probe Diameter | Approx. 5 mm Series Configuration |
| Measurement Function | Shaft Vibration, Shaft Displacement, Rotor Position |
| Measurement Target | Conductive Rotating Shaft |
| Detection Method | Electromagnetic Field Variation |
| Output Signal | Dynamic Analog Signal |
| Installation Method | Threaded Mounting |
| Cable Type | Industrial Shielded Extension Cable |
| Housing Material | Industrial Stainless Steel Alloy |
| Operating Temperature Range | Approx. -35°C to +177°C |
| Response Performance | High-Speed Dynamic Response |
| Measurement Accuracy | High Precision |
| Signal Stability | Long-Term Stable Output |
| Environmental Capability | Industrial Machinery Environment |
| Maintenance Requirement | Low Maintenance |
| Dimensions | Approx. 5 mm Probe Diameter; Length Depends on Configuration |
| Weight | Approx. 0.28 kg（kg） |
Detailed Product Specifications
| Technical Item | Specification |
|---|---|
| Model Number | 990-05-XX-01-00 168251-01 |
| Sensor Type | Shaft Displacement Proximity Sensor |
| Measurement Principle | Eddy Current Technology |
| Probe Design | Non-Contact Compact Probe |
| Measurement Object | Rotating Metal Shaft |
| Monitoring Mode | Continuous Online Monitoring |
| Signal Output Type | Analog Dynamic Output |
| Mechanical Structure | Compact Industrial Design |
| Mounting Method | Threaded Installation |
| Probe Material | Industrial Metal Alloy |
| Cable Assembly | Flexible Shielded Cable |
| Application Area | Turbine, Compressor, Pump, Motor Monitoring |
| Dimensions | Approx. 5 mm Probe Diameter |
| Weight | Approx. 0.28 kg（kg） |
Product Applications
Steam Turbine Monitoring
The 990-05-XX-01-00 168251-01 is suitable for steam turbine shaft monitoring applications.
It can provide information about:
- Shaft vibration level
- Rotor movement
- Shaft displacement
- Mechanical stability
This helps improve equipment reliability and allows maintenance activities to be planned before serious failures occur.
Gas Turbine Applications
Gas turbines operate at high speed and require accurate shaft monitoring.
The system supports:
- Rotor position measurement
- Vibration monitoring
- Shaft movement analysis
- Machine protection
Compressor Applications
Compressors require stable rotor operation for efficient performance.
The product can monitor:
- Shaft displacement changes
- Rotor imbalance
- Mechanical condition
- Abnormal vibration trends
Pump Applications
Industrial pumps can benefit from continuous shaft condition monitoring.
Applications include:
- Shaft movement measurement
- Mechanical wear analysis
- Reliability improvement
- Preventive maintenance support
Motor Applications
The compact design allows installation in various industrial motor systems.
Typical monitoring functions:
- Rotor vibration measurement
- Shaft position monitoring
- Operating condition evaluation
Generator Applications
Generators require stable shaft operation.
The system provides:
- Rotor condition information
- Shaft movement monitoring
- Continuous operational evaluation
- Equipment protection support
Product Advantages
Compact and Flexible Structure
The compact design allows installation in limited spaces.
Advantages:
- Easy integration
- Flexible mounting options
- Suitable for retrofit projects
Direct Shaft Measurement
The system directly measures shaft movement.
Benefits:
- More accurate rotor information
- Improved fault diagnosis
- Better machine condition analysis
Non-Contact Measurement Technology
The probe operates without touching the rotating shaft.
Advantages:
- No mechanical wear
- Longer service life
- Stable measurement performance
High Measurement Reliability
The system provides consistent performance during long-term operation.
Benefits:
- Stable output signal
- High repeatability
- Reliable monitoring data
Predictive Maintenance Support
Continuous monitoring helps identify developing problems.
Benefits:
- Reduced unexpected shutdowns
- Improved maintenance planning
- Increased equipment availability
- Lower maintenance costs
Industrial Durability
The product is designed for demanding industrial environments.
Suitable conditions:
- Continuous operation
- High vibration environments
- Temperature variation
- Heavy industrial machinery
Recommended Same Series or Related Models
| Model | Product Type | Main Parameters | Dimensions | Weight |
|---|---|---|---|---|
| 990-05-70-01-00 | Proximity Transducer System | 5 mm Probe, Standard Shaft Monitoring | Approx. 5 mm Probe Diameter | Approx. 0.28 kg（kg） |
| 990-05-70-01-01 | Proximity Transducer System | Shaft Vibration Monitoring | Approx. 5 mm Probe Diameter | Approx. 0.28 kg（kg） |
| 990-05-70-02-01 | Proximity Transducer System | Shaft Displacement Measurement | Approx. 5 mm Probe Diameter | Approx. 0.28 kg（kg） |
| 990-05-70-02-05 | Proximity Transducer System | Continuous Monitoring Configuration | Approx. 5 mm Probe Diameter | Approx. 0.28 kg（kg） |
| 990-05-70-03-00 | Proximity Transducer System | Rotor Position Monitoring | Approx. 5 mm Probe Diameter | Approx. 0.28 kg（kg） |
Recommended Popular Models from the Same Brand
| Model | Product Type | Main Parameters | Dimensions | Weight |
|---|---|---|---|---|
| 3300 XL 8 mm 330101 Series | Proximity Probe System | 8 mm Eddy Current Probe, High Accuracy Shaft Monitoring | Approx. 8 mm Probe Diameter | Approx. 0.35 kg（kg） |
| 3300 XL 11 mm System | Large Proximity Monitoring System | 11 mm Probe, Large Shaft Measurement Range | Approx. 11 mm Probe Diameter | Approx. 0.45 kg（kg） |
| 3500/42M Monitor Module | Machinery Protection Module | Multi-Channel Vibration Monitoring | Standard Rack Module Structure | Approx. 0.80 kg（kg） |
| 3500/22M Interface Module | Communication Interface Module | Data Acquisition and Communication Function | Rack Mount Design | Approx. 1.00 kg（kg） |
| 1900/65A Machinery Monitoring System | Compact Monitoring System | Multi-Input Machine Condition Monitoring | Compact Panel Structure | Approx. 0.50 kg（kg） |
Product Comparison Table
| Model | Series | Probe Diameter | Main Function | Dimensions | Weight |
|---|---|---|---|---|---|
| 990-05-XX-01-00 168251-01 | 990 Series | 5 mm Configurable | Shaft Vibration and Displacement Monitoring | Approx. 5 mm Probe Diameter | Approx. 0.28 kg（kg） |
| 990-05-70-01-00 | 990 Series | 5 mm | Standard Shaft Monitoring | Approx. 5 mm Probe Diameter | Approx. 0.28 kg（kg） |
| 990-05-70-02-01 | 990 Series | 5 mm | Shaft Displacement Measurement | Approx. 5 mm Probe Diameter | Approx. 0.28 kg（kg） |
| 990-05-70-03-00 | 990 Series | 5 mm | Rotor Position Monitoring | Approx. 5 mm Probe Diameter | Approx. 0.28 kg（kg） |
| 3300 XL 8 mm | 3300 XL Series | 8 mm | High Precision Shaft Monitoring | Approx. 8 mm Probe Diameter | Approx. 0.35 kg（kg） |
Product Summary
The 990-05-XX-01-00 168251-01 is a compact, reliable, and flexible proximity transducer system designed for continuous monitoring of rotating machinery.
As part of the 990 Series, it provides accurate shaft vibration and displacement measurement through proven eddy current non-contact sensing technology.
Main advantages include:
- Compact probe structure
- Direct shaft measurement
- Non-contact operation
- Stable signal performance
- High measurement accuracy
- Long operating life
- Low maintenance requirement
- Excellent industrial adaptability
The product is suitable for turbines, compressors, pumps, motors, generators, gearboxes, and other critical rotating equipment where accurate shaft monitoring is required to improve reliability, reduce downtime, optimize maintenance planning, and support safe continuous operation.