Introduction
The Bently Nevada 22811-00-25-05-02 is a 7200 Series proximity sensor designed for non-contact monitoring of rotating machinery. With an 8 mm sensing format and standard-mount configuration, it is intended for applications where dependable shaft-position and vibration information is required as part of a machinery protection or condition-monitoring system.
This model is particularly relevant to plants maintaining established Bently Nevada monitoring installations. Its role is straightforward but important: provide a stable proximity measurement between the probe tip and the rotating shaft so that compatible monitoring electronics can evaluate changes in shaft movement.
For maintenance teams managing long-service industrial equipment, the 22811-00-25-05-02 can be a practical spare or replacement option. Matching the exact part number is important because 7200 Series probes are available in numerous configurations that may differ in cable arrangement, mounting details, and system compatibility.
Technical Specifications
The 22811-00-25-05-02 is identified in available equipment listings as a Bently Nevada proximity sensor. It belongs to the family of 7200 Series sensing components used for rotating-equipment monitoring. The exact mechanical configuration should be confirmed against the installed system before replacement.
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model | 22811-00-25-05-02 |
| Product Family | 7200 Series |
| Product Type | Proximity Probe / Proximity Sensor |
| Probe Size | 8 mm class |
| Mounting Style | Standard Mount |
| Sensing Method | Non-contact eddy-current proximity measurement |
| Primary Measurement | Shaft displacement / relative vibration |
| Target | Conductive rotating shaft |
| Typical Equipment | Turbines, compressors, pumps, motors and other rotating machinery |
| System Function | Machinery condition monitoring and protection |
| Cable Configuration | Determined by complete part number |
| Associated Components | Compatible driver, extension cable and monitoring electronics |
| Overall Dimensions | Configuration-dependent; verify applicable mechanical drawing |
| Approximate Weight | Exact net weight should be confirmed from the supplied configuration |
| Installation | Standard proximity-probe mounting arrangement, subject to system requirements |
Applications
Turbine Shaft Monitoring
The probe can be integrated into proximity-monitoring arrangements used on steam and gas turbines. Continuous shaft measurements can help monitoring systems identify changes in rotor behavior and support machinery protection strategies.
Compressor Condition Monitoring
Compressors operate under demanding mechanical conditions, making continuous shaft monitoring valuable. A compatible proximity probe can provide the measurement signal required to observe radial shaft movement and vibration.
Pump and Motor Applications
The compact sensing format is also suitable for various pump and motor installations where shaft displacement or vibration needs to be monitored without physically contacting the rotating component.
Legacy Machinery Protection Systems
The 22811-00-25-05-02 is especially relevant for facilities maintaining installed Bently Nevada equipment. Keeping a correctly matched spare can help reduce downtime when an existing proximity sensor requires replacement.
Rotating Equipment Maintenance
Proximity measurements can contribute to condition-based maintenance programs by providing continuous information about shaft behavior. Changes in the measured signal can be investigated alongside other operating and vibration data.
Advantages
Dependable Non-Contact Measurement
The proximity sensing principle allows the shaft to be monitored without physical contact. This makes the technology well suited to continuously rotating components where contact-based sensing would be impractical.
8 mm Sensing Format
The 8 mm configuration provides a compact solution for machinery installations where sensing space is limited but accurate proximity measurement is required.
Established 7200 Series Compatibility
For plants with legacy 7200 Series installations, maintaining compatible components can be more efficient than replacing a complete monitoring architecture. The model is listed as a Bently Nevada 22811-00-25-05-02 proximity sensor across industrial spare-parts databases.
Useful for Planned Maintenance
Keeping the correct probe in inventory allows maintenance personnel to respond more quickly to sensor failures and reduces the risk of extended equipment downtime.
Practical Industrial Monitoring Solution
The probe can form part of a complete machinery protection chain in which shaft movement is converted into useful monitoring data for operators and maintenance engineers.
Exact Part-Number Identification
Using the full 22811-00-25-05-02 ordering number is particularly valuable when several visually similar 7200 Series probes are installed throughout a facility.
Suitable for Long-Life Equipment
For machinery that remains operational for many years, maintaining the existing sensing architecture can offer a cost-effective approach to equipment lifecycle support.
Technical FAQs
1. What is the Bently Nevada 22811-00-25-05-02?
The 22811-00-25-05-02 is a Bently Nevada 7200 Series proximity sensor/probe used for non-contact measurement associated with rotating machinery monitoring.
2. Is the 22811-00-25-05-02 an 8 mm probe?
Yes. The model is identified as an 8 mm 7200 Series proximity sensor in industrial product listings and is marketed for rotating-equipment sensing applications.
3. What does the probe measure?
A proximity probe detects changes in the distance between its sensing tip and a conductive target, normally a rotating shaft. The resulting signal can be used to monitor relative shaft displacement and vibration.
4. What is the purpose of a proximity probe on a turbine?
On a turbine, a proximity probe can monitor rotor movement relative to the stationary probe position. This information can be used by compatible machinery-monitoring equipment to identify abnormal shaft behavior.
5. Can this probe be used with a standard PLC input?
The probe should not be treated as a conventional PLC sensor that can simply be connected to a standard digital input. A compatible proximity driver/interface and monitoring system are normally required to condition and interpret the probe signal.
6. Does the exact cable configuration matter?
Yes. The cable and probe form part of the overall measurement system. Different 7200 Series part numbers can correspond to different cable arrangements, so the replacement should be matched using the complete part number and installed system configuration.
7. Can another 7200 Series 8 mm probe replace this model?
Not necessarily. Matching the nominal 8 mm diameter is not enough. Mounting details, electrical characteristics, cable configuration, system length, and associated driver compatibility should all be checked.
8. What are the dimensions of the 22811-00-25-05-02?
Reliable public documentation for the exact part number does not provide enough information to state a definitive overall length and dimensional envelope. The applicable installation drawing should therefore be used for final mechanical verification.
9. How much does the 22811-00-25-05-02 weigh?
An exact factory net weight could not be reliably established from the available product information. The actual supplied weight can vary with the complete probe and cable configuration, so procurement and shipping calculations should use supplier-confirmed packing data.
10. Is the 22811-00-25-05-02 still useful for legacy systems?
Yes. The model continues to appear in industrial spare-parts listings and is relevant to facilities maintaining installed Bently Nevada monitoring equipment. Its suitability as a replacement depends on compatibility with the existing probe system, driver, cable, and monitoring hardware.
A DCS Q Co., Ltd. - PLC and DCS Industrial Control Equipment Wholesale
