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- Bently Nevada
- 86691-01250-0400-15
- Vibration Probe
- USA
- 8 mm × 125 mm × 4000 mm
- 0.33kg
- Xiamen, China
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Bently Nevada 86691-01250-0400-15 Proximity Sensor Product Detailed Introduction and Technical Specification
1. Product Introduction
The 86691-01250-0400-15 is a precision industrial proximity sensor assembly designed for monitoring the operating condition of rotating machinery.
The product is mainly used for measuring shaft displacement, radial vibration, axial movement, and rotor position changes in critical rotating equipment. It uses eddy current non-contact sensing technology, allowing accurate measurement between the probe and the rotating shaft without physical contact.
The non-contact measurement principle provides excellent reliability during continuous operation. Since there is no mechanical contact between the probe and the monitored shaft, the sensor avoids wear caused by friction and provides long-term measurement stability.
The 86691-01250-0400-15 is designed for industrial machinery protection and condition monitoring applications. It is suitable for equipment where accurate shaft position information is required, including turbines, compressors, generators, pumps, motors, and other high-value rotating machines.
During operation, the sensor continuously detects small changes in shaft movement and vibration behavior. These signals can be analyzed by monitoring systems to identify abnormal conditions such as rotor imbalance, excessive vibration, bearing degradation, shaft misalignment, and mechanical instability.
The product is commonly used in industries requiring high equipment availability and reliable operation. It supports predictive maintenance strategies by providing continuous information about machine health and operating conditions.
The 86691-01250-0400-15 is a configured sensor assembly designed according to specific installation requirements, including probe dimensions, cable length, mechanical structure, and connection configuration.
2. Brand Information
| Parameter | Description |
|---|---|
| Brand | Bently Nevada |
| Product Category | Industrial Proximity Sensor Assembly |
| Product Type | Eddy Current Displacement Sensor |
| Main Function | Shaft displacement and vibration monitoring |
| Measurement Technology | Non-contact eddy current sensing |
| Application Field | Rotating machinery condition monitoring |
| Typical Equipment | Turbines, compressors, generators, pumps, motors |
| Product Position | High reliability machinery protection component |
3. Product Series Information
The 86691-01250-0400-15 belongs to the 86691 Series Proximity Probe Product Family.
The 86691 series is designed for high-accuracy rotating machinery monitoring applications. The series provides reliable measurement of shaft movement and vibration conditions for industrial equipment operating under demanding environments.
The product family focuses on precision displacement measurement, equipment protection, and predictive maintenance applications.
The main characteristics of the 86691 series include:
- Eddy current displacement measurement technology
- Non-contact shaft position detection
- High measurement sensitivity
- Stable signal output
- Strong vibration resistance
- Industrial temperature capability
- Long service life
- Flexible probe and cable configurations
The series is widely used in critical machinery applications where early detection of mechanical problems is required.
4. Product Model Explanation
The model number 86691-01250-0400-15 represents a specific configuration within the 86691 series.
The configuration code identifies important product characteristics, including:
- Probe design
- Probe length
- Cable length
- Mechanical configuration
- Connection style
- Installation requirements
This model is configured for applications requiring a specific probe size and cable arrangement to match the physical installation requirements of industrial equipment.
The 4-meter cable configuration provides flexibility for installations where the sensor location is separated from the monitoring equipment.
5. Product Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 86691-01250-0400-15 |
| Product Type | Proximity Sensor Assembly |
| Measurement Principle | Eddy current non-contact displacement measurement |
| Measuring Target | Conductive metal rotating shaft |
| Main Function | Shaft vibration, radial displacement, axial position monitoring |
| Probe Diameter | Approx. 8 mm |
| Probe Length | Approx. 125 mm |
| Cable Length | Approx. 4 meters |
| Sensor Configuration | Probe and integrated extension cable assembly |
| Operating Temperature Range | Approx. -35°C to +180°C |
| Signal Output | Analog displacement voltage signal |
| Measurement Accuracy | High precision shaft movement detection |
| Installation Method | Threaded mounting installation |
| Connection Type | Industrial sensor connection configuration |
| Environmental Resistance | Resistant to vibration, temperature variation, and industrial conditions |
| Frequency Response | Suitable for high-speed rotating machinery |
| Application Equipment | Turbines, compressors, generators, pumps, motors |
| Sensor Construction | Industrial probe with extension cable |
| Dimensions | Approx. 8 mm diameter × 125 mm probe length × 4000 mm cable length |
| Weight | Approx. 0.33 kg |
6. Product Application
6.1 Steam Turbine Monitoring
The 86691-01250-0400-15 is suitable for steam turbine monitoring systems requiring accurate rotor position measurement.
Steam turbines operate at high speed and require continuous monitoring to maintain safe operation.
The sensor helps detect:
- Shaft vibration changes
- Rotor displacement
- Bearing condition changes
- Rotor instability
- Mechanical alignment problems
Continuous measurement allows operators to identify early warning signs and perform maintenance before major failures occur.
6.2 Gas Turbine Monitoring
Gas turbines operate under high temperature and high rotational speed conditions.
The sensor provides accurate shaft displacement information for turbine protection systems.
Typical applications include:
- Rotor position monitoring
- Vibration measurement
- Mechanical condition evaluation
- Fault detection
The product improves operational reliability and helps maintain stable turbine performance.
6.3 Compressor Condition Monitoring
Compressors are critical rotating machines in industrial processes.
The 86691-01250-0400-15 provides continuous monitoring of shaft movement and helps identify abnormal operating conditions.
It can detect:
- Rotor imbalance
- Shaft misalignment
- Bearing degradation
- Excessive vibration
Applications include:
- Centrifugal compressors
- Process compressors
- High-speed compressors
6.4 Generator Monitoring
Generators require reliable monitoring to maintain long-term operation.
The sensor measures rotor displacement and vibration behavior, providing important information for machine condition evaluation.
Typical applications include:
- Industrial generators
- Power generation equipment
- Large rotating electrical machines
6.5 Pump and Motor Monitoring
Industrial pumps and motors often operate continuously under heavy loads.
The sensor helps monitor shaft movement and detect abnormal mechanical conditions.
It can identify:
- Bearing wear
- Coupling problems
- Shaft deformation
- Mechanical looseness
This improves equipment reliability and reduces unexpected downtime.
7. Product Advantages
7.1 High Accuracy Displacement Measurement
The 86691-01250-0400-15 provides accurate measurement of shaft movement.
Its high sensitivity allows detection of small changes in rotor position, making it suitable for critical machinery monitoring.
7.2 Non-contact Measurement Technology
The sensor operates without physical contact with the rotating shaft.
Main advantages include:
- No mechanical wear
- Extended service life
- Stable measurement performance
- Reduced maintenance requirements
7.3 Excellent Industrial Reliability
The product is designed for continuous operation in demanding environments.
It can maintain stable performance under:
- Mechanical vibration
- Temperature fluctuations
- Long operating cycles
- Industrial conditions
7.4 Flexible Installation Capability
The 4-meter cable configuration provides additional installation flexibility.
It allows the sensor to be installed in locations where the monitoring equipment is positioned farther away.
7.5 Predictive Maintenance Support
The sensor provides continuous equipment condition information.
It helps users:
- Detect mechanical problems early
- Improve maintenance planning
- Reduce unplanned shutdowns
- Increase machine availability
8. Recommended Same Series or Related Models
| Model | Product Type | Main Parameters | Dimensions | Weight (kg) | Application |
|---|---|---|---|---|---|
| 86691-01250-0400-15 | Proximity Sensor Assembly | 8 mm probe, 125 mm probe length, 4 m cable | Approx. 8 mm diameter × 125 mm probe × 4000 mm cable | 0.33 kg | Industrial rotating machinery monitoring |
| 86691-00680-0350-90 | Proximity Sensor Assembly | 8 mm probe, 68 mm probe length, 3.5 m cable | Approx. 8 mm diameter × 68 mm probe × 3500 mm cable | 0.28 kg | Turbine and compressor monitoring |
| 86691-00680-0500-90 | Proximity Sensor Assembly | 8 mm probe, extended 5 m cable configuration | Approx. 8 mm diameter × 68 mm probe × 5000 mm cable | 0.32 kg | Large machinery monitoring |
| 84661-82 | Proximity Sensor | 8 mm probe, 8 m cable, displacement measurement | Approx. 8 mm diameter × 85 mm probe × 8000 mm cable | 0.32 kg | Machinery protection systems |
| 3300 XL 8mm Probe | Eddy Current Probe | High precision shaft displacement measurement | Approx. 8 mm diameter × 85 mm length | 0.23 kg | Critical rotating equipment |
9. Recommended Popular Models from the Same Brand
| Model | Product Type | Main Parameters | Dimensions | Weight (kg) | Application |
|---|---|---|---|---|---|
| 3500/42M | Vibration Monitoring Module | Four-channel vibration and displacement monitoring | Approx. 120 mm × 50 mm × 120 mm | 0.45 kg | Machinery protection systems |
| 3300 XL 8mm Probe | Proximity Probe | Eddy current measurement, high accuracy shaft monitoring | Approx. 8 mm diameter × 85 mm length | 0.23 kg | Turbine and compressor monitoring |
| 3300 XL Proximitor Sensor | Signal Conditioning Module | Probe signal conversion and monitoring output processing | Approx. 25 mm × 80 mm × 100 mm | 0.30 kg | Monitoring systems |
| 3500/22M | Data Interface Module | Machinery condition monitoring communication interface | Approx. 120 mm × 50 mm × 120 mm | 0.40 kg | Industrial monitoring networks |
| 3500/25 | Keyphasor Module | Rotor speed and phase reference measurement | Approx. 120 mm × 50 mm × 120 mm | 0.42 kg | Rotating equipment synchronization |
10. Product Selection Summary
The 86691-01250-0400-15 is a precision proximity sensor assembly designed for advanced rotating machinery monitoring applications.
Its eddy current sensing technology provides accurate shaft displacement measurement while maintaining stable performance during continuous industrial operation.
The product is especially suitable for:
- Turbine rotor monitoring
- Compressor condition monitoring
- Generator vibration analysis
- Pump and motor protection
- Predictive maintenance systems
Main advantages include:
- High precision shaft measurement
- Non-contact operation
- Strong industrial durability
- Flexible cable configuration
- Stable signal performance
- Long operational service life
The 86691-01250-0400-15 provides a reliable monitoring solution for critical rotating equipment and helps improve machinery safety, reduce maintenance costs, and increase operational efficiency.