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- Vibration Transmitter
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Bently Nevada 990-04-XX-03-00 Proximity Transducer System Product Introduction, Technical Parameters, Applications and Advantages
1. Product Overview
Model: 990-04-XX-03-00
The Bently Nevada 990-04-XX-03-00 is an industrial proximity transducer system designed for continuous monitoring of rotating machinery conditions. It is mainly used for measuring shaft vibration, shaft displacement, and relative movement between the sensor probe and rotating shaft.
This model belongs to the 990 Series Proximity Transducer System, a product family developed for industrial machinery condition monitoring and protection applications.
The 990-04-XX-03-00 uses eddy current non-contact measurement technology. The probe detects changes in the electromagnetic field between the probe tip and the rotating shaft surface, allowing accurate measurement of shaft movement without direct physical contact.
The “XX” designation represents configuration variations within the model family. Different configurations may include different probe lengths, cable arrangements, or mechanical installation options to meet different machinery requirements.
The product is commonly applied to critical rotating equipment such as turbines, compressors, pumps, motors, and generators. It provides important information about rotor behavior and helps users identify abnormal mechanical conditions before equipment damage occurs.
The 990-04-XX-03-00 is suitable for applications requiring reliable monitoring, long-term operation, and stable vibration measurement performance.
2. Brand Information
Brand: Bently Nevada
Bently Nevada is an industrial machinery monitoring brand specializing in rotating equipment protection, vibration measurement, and condition monitoring technology.
The product range focuses on monitoring the operating condition of critical industrial machinery.
Main product categories include:
- Proximity transducer systems
- Vibration monitoring sensors
- Machinery protection modules
- Industrial monitoring equipment
Typical industries using these technologies include:
- Power generation
- Petrochemical processing
- Oil and gas production
- Industrial manufacturing
- Heavy rotating machinery applications
The products are designed to improve machinery reliability, reduce unexpected downtime, and support predictive maintenance programs.
3. Product Series Information
Product Series: 990 Series Proximity Transducer System
The 990 Series is an industrial proximity measurement product family designed for direct measurement of rotating shaft movement.
Unlike conventional vibration sensors that measure only machine housing vibration, proximity transducer systems measure shaft movement directly.
The main functions include:
- Shaft vibration measurement
- Radial displacement monitoring
- Rotor movement analysis
- Machinery condition evaluation
The 990 Series provides:
- Accurate measurement capability
- Stable signal output
- Non-contact operation
- Long service life
- Low maintenance requirements
The series is widely used in machinery protection systems where accurate rotor information is essential.
4. Product Description
The 990-04-XX-03-00 is a configurable proximity transducer system designed for industrial rotating equipment monitoring.
The system consists of a proximity probe assembly and associated cable configuration.
Its main purpose is to continuously monitor shaft movement and provide reliable operating condition information.
The product can detect changes caused by:
- Rotor imbalance
- Shaft misalignment
- Mechanical looseness
- Bearing degradation
- Excessive vibration
The direct shaft measurement capability provides more detailed information about rotating machinery behavior compared with general vibration monitoring methods.
The product design allows operation in demanding environments where temperature changes, mechanical vibration, and continuous operation are common.
5. Working Principle
The 990-04-XX-03-00 operates using eddy current sensing technology.
The proximity probe creates an electromagnetic field near the rotating shaft surface.
When the distance between the probe and shaft changes, the electromagnetic field characteristics change.
The sensor converts these changes into electrical signals representing shaft displacement.
The monitoring system can analyze these signals to determine:
- Shaft vibration amplitude
- Rotor stability
- Shaft position changes
- Mechanical operating condition
The non-contact measurement principle provides:
- No physical wear
- Stable signal output
- High measurement repeatability
- Long operating life
6. Product Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 990-04-XX-03-00 |
| Product Type | Proximity Transducer System |
| Product Series | 990 Series |
| Brand | Bently Nevada |
| Measurement Technology | Eddy Current Non-Contact Sensing |
| Sensor Type | Proximity Probe System |
| Measurement Function | Shaft vibration and displacement monitoring |
| Configuration Type | XX configurable model |
| Probe Diameter | Approximately 8 mm |
| Installation Method | Threaded mounting installation |
| Detection Method | Electromagnetic distance measurement |
| Measurement Target | Rotating shaft surface |
| Signal Output | Dynamic displacement signal |
| Application Type | Machinery condition monitoring |
| Suitable Equipment | Turbines, compressors, pumps, motors, generators |
| Cable Configuration | Extension cable assembly |
| Housing Material | Industrial stainless steel structure |
| Operating Temperature | Approximately -35°C to +177°C depending on installation conditions |
| Accuracy | High precision shaft movement measurement |
| Environmental Capability | Suitable for industrial environments |
| Dimensions | Approximate probe diameter 8 mm; overall length depends on XX configuration |
| Weight | Approximately 0.30 kg（kg） |
7. Detailed Product Specification
| Technical Item | Specification |
|---|---|
| Model Number | 990-04-XX-03-00 |
| Product Series | 990 Series |
| Product Category | Machinery Condition Monitoring Sensor |
| Sensor Technology | Eddy Current Proximity Measurement |
| Probe Type | Non-contact displacement probe |
| Probe Diameter | Approx. 8 mm |
| Measurement Object | Rotating shaft surface |
| Measurement Purpose | Vibration and displacement monitoring |
| Installation Style | Industrial threaded mounting |
| Cable Type | Flexible extension cable |
| Signal Type | Dynamic vibration displacement output |
| Operating Temperature Range | Approx. -35°C to +177°C |
| Housing Structure | Industrial metal housing |
| Application Environment | Heavy industrial rotating equipment |
| Maintenance Requirement | Low maintenance |
| Dimensions | Approx. 8 mm probe diameter; length varies according to configuration |
| Weight | Approx. 0.30 kg（kg） |
8. Product Applications
8.1 Steam Turbine Monitoring
Steam turbines require continuous shaft monitoring due to their high-speed operation.
The 990-04-XX-03-00 helps detect abnormal rotor conditions including:
- Excessive shaft vibration
- Rotor imbalance
- Shaft movement changes
- Mechanical instability
Continuous monitoring improves turbine operating reliability and helps reduce unexpected failures.
8.2 Gas Turbine Applications
Gas turbines operate under extreme mechanical and thermal conditions.
The proximity transducer system provides accurate shaft condition information for:
- Rotor monitoring
- Vibration protection
- Equipment analysis
- Maintenance planning
8.3 Compressor Condition Monitoring
Large compressors require reliable monitoring because mechanical problems can affect production efficiency.
The product helps identify:
- Shaft vibration changes
- Rotor instability
- Mechanical alignment problems
- Abnormal operating conditions
8.4 Pump Monitoring
Industrial pumps often operate continuously.
The system supports monitoring of:
- Shaft movement
- Mechanical wear
- Vibration increase
- Equipment condition changes
8.5 Motor and Generator Protection
Large motors and generators require stable operation.
The product provides accurate shaft information for:
- Condition evaluation
- Preventive maintenance
- Machinery protection
9. Product Advantages
Accurate Shaft Measurement
The product directly measures shaft movement, providing detailed information about rotor operating conditions.
This improves the accuracy of machinery condition analysis.
Non-Contact Operation
The probe operates without touching the rotating shaft.
Advantages include:
- Reduced mechanical wear
- Longer service life
- Better reliability
- Lower maintenance requirements
Stable Measurement Performance
The product provides consistent output signals during continuous operation.
This supports reliable machinery monitoring.
Strong Industrial Durability
The system is designed for demanding industrial environments.
It can operate effectively under:
- Mechanical vibration
- Temperature changes
- Continuous operation conditions
Supports Predictive Maintenance
The product helps users monitor equipment health and identify developing problems early.
Benefits include:
- Reduced downtime
- Improved maintenance scheduling
- Increased equipment availability
Flexible Configuration
The XX model structure allows different configurations to meet various machinery installation requirements.
10. Recommended Same Series or Related Models
| Model | Product Type | Main Parameters | Application | Dimensions | Weight |
|---|---|---|---|---|---|
| 990-04-XX-01-00 | Proximity Transducer System | 8 mm probe, configurable shaft vibration monitoring | General rotating machinery | Approx. 8 mm probe diameter | Approx. 0.30 kg（kg） |
| 990-04-XX-01-05 165335-01 | Proximity Transducer System | 8 mm probe, industrial shaft measurement configuration | Turbines and compressors | Approx. 8 mm probe diameter | Approx. 0.30 kg（kg） |
| 990-04-70-01-00 | Proximity Transducer System | Standard 8 mm eddy current probe system | Industrial equipment monitoring | Approx. 8 mm probe diameter | Approx. 0.30 kg（kg） |
| 990-04-90-01-05 | Proximity Transducer System | Precision shaft displacement monitoring | Critical rotating equipment | Approx. 8 mm probe diameter | Approx. 0.30 kg（kg） |
| 3300 XL 8 mm Proximity Probe System | Proximity Sensor System | 8 mm high accuracy eddy current measurement | Turbines and compressors | Approx. 8 mm probe diameter | Approx. 0.35 kg（kg） |
11. Recommended Popular Models From The Same Brand
| Model | Product Type | Main Parameters | Application | Dimensions | Weight |
|---|---|---|---|---|---|
| 3300 XL 8 mm 330101 Series | Proximity Probe | 8 mm sensing diameter, high precision shaft vibration measurement | Turbines and compressors | Approx. 8 mm probe diameter | Approx. 0.35 kg（kg） |
| 3300 XL 11 mm Proximity Probe System | Large Shaft Proximity Probe | 11 mm sensing diameter, large rotor monitoring | Heavy rotating machinery | Approx. 11 mm probe diameter | Approx. 0.45 kg（kg） |
| 3500/42M Vibration Monitor Module | Machinery Monitoring Module | Multi-channel vibration monitoring and protection | Large rotating equipment | Rack-mounted module structure | Approx. 0.80 kg（kg） |
| 3500/22M Interface Module | Communication Module | Data acquisition and monitoring communication | Condition monitoring systems | Standard rack module size | Approx. 1.00 kg（kg） |
| 1900/65A Machinery Monitoring System | Compact Monitoring Device | Multi-input vibration monitoring solution | Small and medium machinery | Compact panel installation | Approx. 0.50 kg（kg） |
12. Product Comparison Table
| Model | Series | Technology | Main Feature | Dimensions | Weight |
|---|---|---|---|---|---|
| 990-04-XX-03-00 | 990 Series | Eddy Current Technology | Configurable shaft monitoring solution | Approx. 8 mm probe diameter | Approx. 0.30 kg（kg） |
| 990-04-XX-01-00 | 990 Series | Eddy Current Technology | Standard proximity measurement | Approx. 8 mm probe diameter | Approx. 0.30 kg（kg） |
| 990-04-XX-01-05 165335-01 | 990 Series | Eddy Current Technology | Flexible shaft monitoring configuration | Approx. 8 mm probe diameter | Approx. 0.30 kg（kg） |
| 3300 XL 8 mm | 3300 XL Series | Eddy Current Technology | High precision proximity measurement | Approx. 8 mm probe diameter | Approx. 0.35 kg（kg） |
| 3500/42M | 3500 Series | Digital Monitoring Technology | Advanced vibration protection | Rack module design | Approx. 0.80 kg（kg） |
13. Product Summary
The 990-04-XX-03-00 proximity transducer system is a flexible and reliable industrial monitoring solution designed for rotating machinery condition analysis.
As part of the 990 Series, it provides accurate shaft vibration and displacement measurement using eddy current non-contact sensing technology.
Main advantages include:
- High measurement accuracy
- Non-contact sensing design
- Stable signal output
- Long service life
- Flexible configuration capability
- Low maintenance requirements
The product is suitable for turbines, compressors, pumps, motors, generators, and other critical rotating equipment.
By continuously monitoring shaft movement and vibration conditions, the 990-04-XX-03-00 helps improve machinery reliability, reduce unexpected equipment failures, optimize maintenance strategies, and support safe industrial operation.