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- Bently Nevada
- 990-04-70-01-00 122115-01
- Vibration Transmitter
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- 8 mm
- 0.3kg
- Xiamen, China
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Bently Nevada 990-04-70-01-00 122115-01 Proximity Transducer System Detailed Product Introduction
1. Product Overview
Model: Bently Nevada 990-04-70-01-00 122115-01
The Bently Nevada 990-04-70-01-00 122115-01 is a high-performance proximity transducer system designed for continuous monitoring of rotating machinery vibration and shaft position. It is widely used in industrial condition monitoring applications where accurate measurement of shaft displacement, radial vibration, axial position, and mechanical movement is required.
This model belongs to the Bently Nevada 990 Series Proximity Transducer System, which is designed to provide reliable vibration measurement solutions for critical rotating equipment. The system combines a proximity probe, extension cable, and signal conditioning technology to deliver precise non-contact measurements between the probe tip and the rotating shaft surface.
The 990 Series is commonly applied in machinery protection systems, predictive maintenance systems, and industrial monitoring environments where equipment reliability and operational safety are critical.
The 990-04-70-01-00 122115-01 model provides stable signal output, high measurement accuracy, and long-term operational reliability. It is particularly suitable for monitoring machines such as pumps, compressors, turbines, motors, generators, and other rotating equipment.
2. Product Parameters
| Parameter | Description |
|---|---|
| Model | 990-04-70-01-00 122115-01 |
| Product Type | Proximity Transducer System |
| Series | 990 Series |
| Measurement Principle | Eddy Current Non-Contact Measurement Technology |
| Measurement Object | Shaft displacement, radial vibration, axial position |
| Sensor Type | Proximity Probe System |
| Probe Diameter | Approximately 8 mm |
| Operating Frequency | High-frequency dynamic measurement |
| Measurement Range | Suitable for standard machinery vibration monitoring applications |
| Signal Output | Conditioned vibration displacement signal |
| Cable Type | Integrated extension cable configuration |
| Probe Material | Stainless steel housing with industrial-grade sensing components |
| Operating Temperature Range | Approximately -35°C to +177°C depending on installation configuration |
| Installation Type | Threaded mounting installation |
| Thread Size | Standard industrial mounting thread configuration |
| Accuracy | High precision dynamic shaft displacement measurement |
| Application Environment | Industrial rotating machinery monitoring |
| Protection Level | Designed for harsh industrial operating environments |
| Dimensions | Approximate probe diameter 8 mm; overall assembly length depends on probe and cable configuration |
| Weight | Approximately 0.3 kg（kg） |
3. Product Structure and Working Principle
The Bently Nevada 990-04-70-01-00 122115-01 system uses eddy current sensing technology to measure the distance between the probe tip and the rotating shaft. Unlike contact-type sensors, the proximity probe does not physically touch the rotating component, which reduces mechanical wear and improves long-term stability.
During operation, the probe generates an electromagnetic field near the shaft surface. Changes in the distance between the probe and shaft alter the electrical characteristics of the sensing circuit. These changes are converted into proportional electrical signals representing shaft movement or vibration displacement.
The processed signal can then be transmitted to monitoring systems for real-time analysis, alarm generation, and equipment protection.
This non-contact measurement design makes the product highly suitable for high-speed rotating equipment where traditional vibration sensors may experience limitations.
4. Product Applications
Industrial Turbines
The 990 Series proximity transducer system is frequently used for monitoring steam turbines, gas turbines, and hydro turbines. It helps detect abnormal shaft vibration, rotor instability, and mechanical imbalance.
By continuously monitoring shaft movement, operators can identify potential failures before serious equipment damage occurs.
Compressors
Large centrifugal compressors require accurate vibration monitoring because rotor problems can lead to significant production losses.
The 990-04-70-01-00 122115-01 provides reliable shaft vibration measurement for compressor protection systems.
Pumps
Industrial pumps operating under continuous conditions can develop problems such as bearing wear, misalignment, and imbalance.
The proximity measurement system helps maintenance teams identify mechanical issues early and improve equipment availability.
Motors and Generators
Large electrical machines require stable vibration monitoring to maintain operational reliability.
The product can monitor rotor movement and provide valuable information for predictive maintenance programs.
Industrial Machinery Protection Systems
The model can be integrated into machinery monitoring solutions used in power generation, oil and gas, chemical processing, manufacturing, and other heavy industries.
5. Product Advantages
High Measurement Accuracy
The product provides precise shaft displacement measurement through eddy current technology. This allows accurate detection of small mechanical movements that may indicate developing equipment problems.
Non-Contact Measurement Design
Because the probe does not physically contact the rotating shaft, it avoids mechanical wear and provides longer service life compared with traditional contact measurement devices.
Strong Environmental Adaptability
The system is designed for industrial environments where vibration, temperature fluctuations, and continuous operation are common.
Reliable Long-Term Performance
The 990 Series design focuses on stable operation and consistent signal output, making it suitable for critical machinery monitoring applications.
Easy Integration
The product can be integrated with industrial vibration monitoring systems and machinery protection platforms, allowing centralized equipment condition analysis.
Improved Maintenance Efficiency
By providing continuous vibration information, the system helps users move from reactive maintenance toward predictive maintenance strategies.
6. Brand Information
| Item | Description |
|---|---|
| Brand | Bently Nevada |
| Product Family | Proximity Transducer Systems |
| Main Product Series | 990 Series |
| Product Category | Machinery Condition Monitoring Sensors |
| Technology Type | Eddy Current Proximity Measurement Technology |
7. Product Series Introduction
The Bently Nevada 990 Series is a family of proximity transducer systems developed for monitoring rotating machinery conditions.
The series is mainly designed for applications requiring accurate shaft vibration measurement, displacement monitoring, and machinery protection.
Compared with general vibration sensors, the 990 Series focuses on direct shaft measurement, providing highly accurate information about rotor behavior.
Typical applications include:
- Steam turbines
- Gas turbines
- Compressors
- Pumps
- Motors
- Generators
- Industrial rotating equipment
8. Recommended Same Series or Related Models
| Model | Product Type | Main Parameters | Dimensions | Weight |
|---|---|---|---|---|
| 990-05-50-01-00 | Proximity Transducer System | 5 mm probe system, vibration and position measurement, industrial monitoring application | Probe diameter approx. 5 mm, standard threaded mounting design | Approx. 0.25 kg（kg） |
| 990-05-70-01-00 | Proximity Transducer System | 5 mm sensing system, high accuracy shaft displacement monitoring | Approx. 5 mm probe diameter, compact sensor structure | Approx. 0.28 kg（kg） |
| 990-04-50-01-00 | Proximity Transducer System | 8 mm probe configuration, standard vibration monitoring | Approx. 8 mm probe diameter, industrial installation structure | Approx. 0.30 kg（kg） |
| 3300 XL 8 mm Proximity Probe System | Proximity Measurement System | 8 mm eddy current probe technology, shaft vibration measurement | Probe diameter approx. 8 mm, various cable lengths available | Approx. 0.35 kg（kg） |
| 3300 XL 11 mm Proximity Probe System | Large Shaft Proximity System | 11 mm sensing diameter, large machinery shaft monitoring | Approx. 11 mm probe diameter, heavy-duty installation design | Approx. 0.45 kg（kg） |
9. Recommended Popular Models From The Same Brand
| Model | Product Type | Main Parameters | Typical Application | Dimensions | Weight |
|---|---|---|---|---|---|
| 3300 XL 8 mm 330101-00-08-10-02-00 | Proximity Probe | 8 mm probe, non-contact shaft vibration measurement, high accuracy output | Turbines, compressors, pumps | Probe diameter approx. 8 mm, standard industrial probe length | Approx. 0.35 kg（kg） |
| 3500/42M 140734-02 | Proximity Monitor Module | 4-channel vibration monitoring module, machinery protection monitoring | Machinery protection systems | Standard rack module design | Approx. 0.8 kg（kg） |
| 3500/22M 288055-01 | Transient Data Interface Module | High-speed data acquisition, system communication interface | Condition monitoring systems | Rack-mounted module structure | Approx. 1.0 kg（kg） |
| 3300 XL Extension Cable 330130 Series | Extension Cable System | High temperature resistant extension cable, compatible with proximity probes | Industrial rotating machinery | Cable length available in multiple configurations | Approx. 0.20 kg（kg） |
| 1900/65A 78462-01 | Machinery Monitoring System | Compact vibration monitoring device, multiple input channels | Small and medium rotating equipment | Compact panel mounting structure | Approx. 0.5 kg（kg） |
10. Technical Comparison Summary
| Model | Series | Measurement Technology | Main Advantage | Dimensions | Weight |
|---|---|---|---|---|---|
| 990-04-70-01-00 122115-01 | 990 Series | Eddy Current Proximity Measurement | Reliable shaft vibration monitoring | Approx. 8 mm probe diameter | Approx. 0.3 kg（kg） |
| 990-05-70-01-00 | 990 Series | Eddy Current Proximity Measurement | Compact high accuracy monitoring | Approx. 5 mm probe diameter | Approx. 0.28 kg（kg） |
| 3300 XL 8 mm | 3300 XL Series | Eddy Current Technology | Wide industrial application range | Approx. 8 mm probe diameter | Approx. 0.35 kg（kg） |
| 3300 XL 11 mm | 3300 XL Series | Eddy Current Technology | Suitable for larger shafts | Approx. 11 mm probe diameter | Approx. 0.45 kg（kg） |
| 3500/42M 140734-02 | 3500 Series | Digital Monitoring Technology | Advanced machinery protection | Rack module format | Approx. 0.8 kg（kg） |
11. Overall Product Evaluation
The Bently Nevada 990-04-70-01-00 122115-01 is a professional-grade proximity transducer system designed for industrial rotating equipment monitoring. With accurate non-contact measurement technology, strong environmental adaptability, and reliable long-term operation capability, it is widely recognized as an important component in machinery protection and predictive maintenance systems.
Its combination of measurement precision, durability, and compatibility with industrial monitoring solutions makes it suitable for applications where equipment reliability and operational safety are essential.
For users requiring stable vibration monitoring performance, the 990 Series provides an effective solution for detecting mechanical changes, improving maintenance planning, and reducing unexpected equipment downtime.