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- Bently Nevada
- 22811-00-13-05-02
- Proximity Probe
- USA
- 8 mm
- 0.59 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Bently Nevada 22811-00-13-05-02 7200 Series 8 mm Proximity Probe is a non-contact displacement sensor used for monitoring the position and movement of rotating machinery shafts. It belongs to the 7200 Series and is used in machinery protection and condition monitoring systems where shaft displacement, vibration, or rotational behavior must be continuously observed.
The probe operates close to the rotating shaft without making physical contact. In applications such as turbines, compressors, pumps, and other high-speed rotating equipment, this arrangement allows shaft movement to be monitored without introducing mechanical loading or wear at the sensing point.
A typical installation places the probe near the shaft surface or an appropriate target. Changes in the distance between the probe and target produce corresponding changes in the electrical output of the associated proximity measurement system. The resulting signal can then be used for machinery monitoring, alarm, or protection functions.
The 22811-00-13-05-02 part number should be matched against the existing probe configuration before replacement. Probe characteristics, installation arrangement, cable/interface requirements, and compatibility with the associated monitoring electronics should all be checked when servicing an installed 7200 Series system.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 22811-00-13-05-02 |
| Product Family | Bently Nevada 7200 Series |
| Product Type | 8 mm Proximity Probe |
| Manufacturer | Bently Nevada |
| Sensing Principle | Non-Contact Proximity Measurement |
| System Role | Rotating Machinery Displacement and Vibration Monitoring |
| Primary Function | Shaft Position and Movement Measurement |
| Typical Application | Turbine, Compressor, Pump and Rotating Machinery Monitoring |
| Diameter | 8 mm |
| Weight | 0.59 kg |
Product Features
- Non-contact measurement of rotating shaft movement.
- Part of the Bently Nevada 7200 Series machinery monitoring family.
- Suitable for shaft displacement and vibration monitoring applications.
- 8 mm probe configuration for compatible machinery monitoring installations.
- Operates without mechanical contact with the rotating shaft.
- Suitable for continuous monitoring arrangements.
- Can be integrated with compatible proximity measurement electronics.
- Useful for machinery protection and condition monitoring systems.
- Supports monitoring of critical rotating equipment.
- Suitable for applications where direct shaft movement measurement is required.
- Requires correct probe installation relative to the monitored target.
- Appropriate for replacement and maintenance of compatible 7200 Series installations.
Working Principle
The 22811-00-13-05-02 uses a non-contact proximity sensing method to detect changes in the distance between the probe tip and the monitored shaft or target surface. As the shaft moves relative to the probe, the electrical characteristics of the sensing circuit change.
The associated signal-conditioning electronics convert this change into a usable measurement signal. The monitoring system can then evaluate shaft position, displacement, or vibration-related information and generate alarms or protection actions when configured limits are exceeded.
Rotating Shaft → 22811-00-13-05-02 Probe → Signal Conditioning → Machinery Monitoring System → Alarm / Protection
Probe positioning is critical to measurement quality. The installation gap, target surface, probe alignment, cable/interface configuration, and associated electronics should all correspond to the requirements of the complete monitoring system.
Role in a Machinery Protection Control Architecture
The proximity probe forms the field sensing point of the machinery protection chain. It detects shaft movement and transfers the corresponding measurement information to the signal-conditioning and monitoring stages.
Rotating Machine → Proximity Probe → Proximity Electronics → Monitoring System → Alarm / Trip → Machine Protection
| System Element | Function |
|---|---|
| Rotating Shaft | Provides the monitored mechanical movement |
| 22811-00-13-05-02 | Detects shaft displacement without physical contact |
| Proximity Signal Conditioning | Processes the probe signal |
| Machinery Monitoring System | Evaluates shaft movement and vibration information |
| Alarm System | Reports abnormal operating conditions |
| Protection Logic | Determines whether a protective action is required |
| Shutdown / Trip System | Initiates machine shutdown when configured limits are reached |
Industrial Applications
| Application | Typical Use |
|---|---|
| Steam Turbines | Shaft displacement and vibration monitoring |
| Gas Turbines | Rotating shaft condition monitoring |
| Compressors | Shaft movement and machinery protection |
| Pumps | Rotating equipment monitoring |
| Generators | Rotor movement monitoring |
| Motors | Shaft condition monitoring |
| Expanders | High-speed rotating machinery monitoring |
| Industrial Turbomachinery | Continuous shaft monitoring |
| Process Plants | Critical rotating equipment protection |
| Power Generation | Turbine and generator machinery protection |
Installation and Maintenance
- Verify the complete 22811-00-13-05-02 part number before installation.
- Confirm compatibility with the existing 7200 Series monitoring arrangement.
- Isolate the machinery and follow the applicable safety procedures before probe installation.
- Inspect the probe tip for mechanical damage or contamination.
- Check the mounting arrangement and ensure that the probe can be positioned correctly relative to the target.
- Set the probe-to-target gap according to the requirements of the associated monitoring system.
- Maintain proper probe alignment with the monitored shaft or target surface.
- Route the probe cable away from sources of mechanical damage and excessive electrical interference.
- Verify connector and termination conditions before commissioning.
- Check the proximity signal after installation and confirm that the measurement is stable.
- Compare the installed signal with expected machine operating conditions during commissioning.
- Periodically inspect the probe installation and investigate any sudden change in signal behavior before adjusting protection settings.
Related Components
| Component | Function |
|---|---|
| Bently Nevada 7200 Series Proximity Electronics | Conditions and processes the probe signal |
| Proximity Signal Conditioner | Converts the sensor response into a usable monitoring signal |
| Machinery Monitoring System | Processes shaft displacement and vibration information |
| Shaft / Rotor | Provides the monitored target |
| Probe Mounting Hardware | Positions the probe relative to the target |
| Extension Cable | Connects the probe to associated electronics where required |
| Monitoring Rack | Houses compatible monitoring electronics |
| Alarm System | Indicates abnormal machinery conditions |
| Shutdown System | Initiates protective machine shutdown |
| Machine Control System | Coordinates monitoring and operating functions |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Bently Nevada 7200 Series | Proximity Monitoring System | Rotating machinery monitoring |
| Bently Nevada 7200 Series 8 mm Proximity Probe | Proximity Probe | Shaft displacement measurement |
| Bently Nevada 3300 XL | Proximity Monitoring System | Turbine and rotating machinery monitoring |
| Bently Nevada 3300 XL 8 mm | Proximity Probe System | Shaft vibration and position monitoring |
| Bently Nevada 3300 XLNS | Proximity Probe | Machinery condition monitoring |
| Bently Nevada 3300 XL Extension Cable | Extension Cable | Probe signal connection |
| Bently Nevada Proximitor Sensor | Signal Conditioning Module | Proximity probe signal processing |
| Bently Nevada 3500 | Machinery Protection System | Critical machinery protection |
| Bently Nevada 3500/40M | Proximity Monitor | Position and vibration monitoring |
| Bently Nevada 1900/65A | Machinery Protection Monitor | Machinery condition monitoring |
Key Advantages
- Non-contact shaft displacement measurement.
- Suitable for critical rotating machinery monitoring.
- 8 mm probe configuration for compatible 7200 Series systems.
- Supports continuous shaft movement and vibration monitoring.
- Can be integrated into machinery protection architectures.
- Suitable for turbine, compressor, pump, and other rotating equipment.
- Useful for maintenance and replacement of compatible 7200 Series probes.
Technical FAQs
What does the 8 mm designation mean for the 22811-00-13-05-02 probe?
The 8 mm designation identifies the probe’s sensing configuration and physical probe diameter. It should not be interpreted as the required installation gap. The actual installation gap must be established according to the associated monitoring electronics and application requirements.
What happens if the probe is not correctly aligned with the shaft target?
Incorrect alignment can cause unstable or inaccurate proximity measurements. The resulting signal may not accurately represent shaft movement and can potentially lead to abnormal monitoring indications. Probe position and target geometry should therefore be checked during installation.
Can the 22811-00-13-05-02 be connected directly to a machinery monitoring rack?
The probe normally works as part of a complete proximity measurement chain and requires compatible signal-conditioning electronics. Direct connection to a monitoring rack should only be made when the rack and its input interface are specifically compatible with the probe arrangement.
What should be checked when a previously stable proximity signal suddenly changes?
First inspect the probe installation, mounting condition, cable connections, signal-conditioning electronics, and probe-to-target relationship. If the mechanical position has not changed, the associated electronics and wiring should also be checked before concluding that the probe itself has failed.