Vibration analysis
Vibration analysis is an important part of the maintenance of machines and systems. Vibrations can be recorded and analyzed on site using measurement technology devices such as acceleration sensors and vibration measuring devices. This data is then evaluated using special software to identify possible causes of the vibrations. Based on this analysis, targeted measures can then be introduced to eliminate the problems in order to avoid breakdowns and improve the efficiency of the systems.
Detect machine vibrations
Recording machine vibrations is a field of application that can vary greatly due to its approaches and objectives. The general aim is to detect changes in the operating condition as part of condition monitoring through regular or permanent recording and vibration analysis of machine vibrations, as well as to analyze machine vibrations in order to diagnose damage or optimize operational safety and production quality.
Depending on the measurement task, the sensor technology used and the respective machine type, there may be different requirements for the measurement technology for vibration analysis.
What are standard signals in vibration analysis?
In order for physical process variables, such as temperatures, humidity or pressures, to be processed by evaluation devices, they must be converted into standardized electrical signals. These signals can be transmitted either as current or voltage signals.
In the vast majority of applications, current signals are preferred to voltage signals. The advantage of current signals is their insensitivity to electromagnetic interference. Voltage losses due to line resistances are also not to be expected with current signals.
Where is vibration analysis used in industry?
There are many different causes of vibrations in machinery with rotating and other moving components. Such specific sources of interference are, for example
- Toothing errors in the gearboxes
- Pronounced wave curvatures
- Imbalances and misalignment
- Foundation problems
- Additional vortex vibrations due to liquids and gases
- Electromagnetic interference
- Certain cavity formations in rapidly flowing liquids
- Deposits on fan elements
- Wear of rolling bearings
- Disturbed concentricity of plain bearings
Even a single technically faulty system within a rotating machine park can be enough to bring the entire production to a standstill.
For this reason, the areas of application of predictive vibration analysis in industry are very numerous. They relate in particular to
- Motors with drives of all kinds
- Industrial pumps
- Technical gearboxes
- Fans and other ventilation systems
- Compressors and other compression systems
- Rotating rollers and their bearings
- Turbines and other systems in power plants
- Special wind turbines
Solutions for vibration analysis
Measuring devices and data loggers are used to record the sensor measurement data. It is particularly important to note that special measuring devices with an extremely high sampling rate must be used.
With the Expert Vibro device from Delphin is a versatile and powerful measuring device for vibration analysis. It offers up to 16 synchronous and galvanically isolated analog inputs with a sampling rate of 50 kHz per channel for the acquisition of sensor data.
The inputs of the Expert Vibro are universally configurable on the software side and enable flexible recording of currents, voltages and IEPE sensors. Another user-friendly feature is that the individual analog inputs can be assigned individually to one of the 4 trigger groups with freely configurable comparators for keyphasor sensors. These functions provide maximum flexibility for every measuring task.
Application highlights of vibration analysis
- Synchronous, parallel detection of up to 16 vibration signals/device
- Simultaneous acquisition of vibration and process signals
- Self-sufficient and therefore safe vibration monitoring
- Can be used as a subsystem on existing process control systems
- Determination of characteristic values (peak-peak, gap), order analysis
- Data logger memory for autonomous long-term recording of machine history
- Monitoring/alarming (SMS, e-mail)
- Reporting to higher-level control systems via PROFIBUS-DP or Modbus RTU/TCP
- Analysis of on/off-line measured values on the workstation PC
- Evaluation with orbit, FFT, cascade, y(t) diagram and others
- Calculation of envelope frequency spectrum and vibration velocity
- Powerful vibration diagnosis system for autonomous long-term recording through integrated data memory
- Universal connection options for acceleration, velocity or distance sensors
- Small compact design and high channel density for easy installation in control cabinets
Vibration analysis without a PC
The Expert Vibro is a PC-independent measurement and control system that can be operated and configured intuitively. This means that raw signals, time signals and their spectra can be generated with ease. For in-depth analyses, you can further process the respective vibration signal with numerous optional modules in order to obtain the maximum information content. All common characteristic values, algorithms, filters, integrators, software channels and other parameters are available here, with which the signal can be individually evaluated for the measurement task.
Vibration analysis with the measuring case
With the mobile solution from Delphin, both the analysis and elimination of vibration problems in vibration measurement technology can be carried out flexibly and easily directly on site.
Vibration analysis with Delphin Technology
Vibration measurement technology from Delphin is aimed at users whose task is vibration monitoring, vibration analysis and damage diagnosis. The simple handling, the favorable cost/benefit ratio and the possibility of integrating vibration monitoring into process monitoring offer many advantages compared to other products.
We would be happy to present our products for modern vibration analysis to you in detail. Get in touch with our team of experts right away and let us advise you without obligation!
The right software for your measurement and testing solution
Special vibration measurement diagrams
Precise monitoring of machine vibrations and vibration displacements | Powerful tools for frequency and order analysis | Condition monitoring for preventive maintenance | Can be combined with Delphin measuring devices for complete solutions
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Data acquisition and analysis
Display and monitor measurement data live | Intuitive operation and easy handling without programming knowledge | Versatile diagram and analysis functions for various measurement data | Ready for data acquisition and analysis in just a few minutes
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Operating and monitoring
Reliably record and save measurement data | Clearly display and evaluate measured values | Quickly set up and operate projects without programming effort | Ideal for individual measuring stations up to small measuring systems
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Automate and control
Monitor measurement data and control processes directly | Create automations simply by dragging and dropping | Suitable for complex test benches and automation tasks | Implement and adapt projects without programming knowledge
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Central measurement data management
Central storage of operating, maintenance and process data | Cross-site real-time monitoring of machine and process statuses | Modular structure makes it easy to adapt to growing plant and process environments
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Visualisation and operation
Easily create your own visualizations for measurement data | Conveniently evaluate and log measurement and process data | Intuitive interface for efficient work without programming knowledge | Ideal for individual measuring stations through to complex monitoring solutions
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Data acquisition and saving
Display and monitor signals and processes in real time | Easy handling with no training required | Access to measurement data from PC, tablet or smartphone | Ready for many measurement and analysis tasks in just a few minutes
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