Record, monitor and analyze shaft vibrations
The measurement of shaft vibrations refers to the detection and analysis of vibrations that occur in wave form. This can be relevant in various areas such as turbines, gas turbines, hydroelectric power plants or compressors. Special sensors or measuring devices are used to measure shaft vibrations, which record the vibrations and convert them into electrical signals. These signals can then be analyzed to obtain information about the frequency, amplitude and other characteristics of the vibrations. Measuring shaft vibrations is important for identifying problems, optimizing performance parameters and ensuring the safety of systems.
Up to 16 shaft vibrations can be recorded, analyzed and monitored synchronously with an Expert Vibro device. Both the static shaft position and the dynamic vibration of the plain-bearing mounted rotating shaft in relation to the fixed bearing housing are determined. The radial shaft position and speed are also recorded by means of a reference mark (KeyPhasor) on the shaft. Phase information can be calculated from the shaft position. The Expert Vibro device can calculate a spectrum and characteristic values such as smax or peak-peak directly from the measured time signals, save them independently or transfer them to DCS systems or PCs via Ethernet or PROFIBUS-DP. With the software ProfiSignal and the Vibro option, the measured values can be displayed and evaluated in the Orbit, Polar, Bode, Shaft Centerline or FFT diagram.
Application highlights of the shaft vibration
- Evaluation of vibration amplitude spp and maximum amplitude smax according to VDI2059
- Monitoring the static shaft position and the dynamic shaft oscillation
- Frequency/amplitude spectrum is calculated online in Expert Vibro
- Up to four different speeds and triggers with just one device
- Visualization and analysis using time signal, trend spectrum, cascade and orbit diagrams
Practical example of a shaft vibration measurement
Vibration monitoring at hydropower plants
The Expert Vibro devices are in use at hydroelectric power plants in dams, reservoirs and rivers around the world. The Expert Vibro devices are used to monitor vibrations on Kaplan and Francis turbines and transfer characteristic values to control systems via redundant PROFIBUS interfaces. Reference plants in the field of hydropower are located in Egypt, Brazil, Germany, Luxembourg, Morocco, Uganda, Romania and the USA.
Typical areas of application
the shaft vibration measurement
- Hydropower machines
- Steam or gas turbines
- Compressors and compressors
- Large gearbox
- Gearbox test stands
- Turbine test benches
Hardware and software for your measurement and testing solution
Flexible, scalable and expandable solution for seamless data acquisition and monitoring
The Loggito device is a compact data logger system designed for the acquisition and recording of measurement data. It has a variety of analog and digital inputs to connect different sensors and signals. The device records the data with high accuracy and stores it on an internal memory or external storage media such as SD cards.
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Data acquisition and analysis
With ProfiSignal Go you can display online data from the Message and Expert hardware in diagram form. Numerous analysis functions, such as zoom, cursor, movable axes, flags, ASCII export and calculation channels, enable fast display of measured values and post-processing.
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Precisely record, autonomously store, automatically transmit and evaluate measured values.
The FPGA-based Expert Logger device is particularly powerful and enables the processing of up to 46 analogue input channels, both at low and high sampling rates. Measured values can be precisely recorded, autonomously stored and automatically transferred to the internet or PC via USB, LAN or WLAN and evaluated.
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Operating and monitoring
ProfiSignal Basic combines the functions of ProfiSignal Go with operating and monitoring elements of process visualisations, e.g. digital and analogue displays, switches, buttons and signal lamps. With Basic, you can create everything from simple visualisation diagrams to complex visualisation systems.
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Modular measuring, monitoring and automation in one device.
The ProfiMessage D device is a state-of-the-art data logger system that has been specially developed for industrial data acquisition and analysis. It offers a wide range of functions such as the recording and storage of measurement data, monitoring of process parameters and alarms in the event of deviations.
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Automate and control
ProfiSignal Klicks supplements ProfiSignal Basic with functions for process automation. Structural diagrams for mapping the process as well as a script language (completely operable with the mouse) enable even the non-informatician to create complex test stand and automation applications with automatic report generation.
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State-of-the-art processor technology and extreme precision for vibration measurement.
The Expert Vibro device is a powerful vibration analysis device that has been specially developed for monitoring and analyzing machine and system conditions. It enables vibration data to be recorded and evaluated in order to detect potential problems or signs of wear at an early stage.
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Fast project planning and analysis of measurement data
With ProfiSignal 20 Go you can visualise your measurement data in just a few steps, both online and offline, in various diagram types, monitor, analyse, archive as a measurement file or export directly in the appropriate file format.
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Intelligent data recorder for synchronous recording of transient and periodic events.
The Expert Transient device enables the recording and evaluation of transient signals over a certain period of time and provides important information for the optimization of processes and systems. The device is characterized by its high accuracy, fast sampling rate and simple operation.
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Visualisation and operation
With ProfiSignal 20 Basic you can create individual diagrams using a wide range of operating and monitoring elements. Both continuous processes (e.g. production data acquisition) and discontinuous measurement tasks (e.g. test measurements) can be visualised, operated and monitored without any programming effort. You can create the operating and monitoring diagrams by assembling and configuring the prefabricated elements.
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Modular system for use as a measuring, control and monitoring device.
The ProfiMessage devices are a modular, expandable and easy-to-use system for measurement data acquisition, monitoring and automation of machines, systems or test benches. ProfiMessage can be used wherever measured values need to be recorded quickly, precisely and electrically isolated, as well as intelligently pre-processed or monitored.
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Central measurement data management
The Delphin Data Center is the solution used for the worldwide measurement networking and control of plants, machines and test stands.
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PC-supported data acquisition and test stand
The Expert Key device is a measuring and control device that can be used in various applications. It enables the acquisition and evaluation of measurement data as well as the control of processes. The device has various interfaces and can be connected to a wide range of sensors and actuators. It is often used in automation technology, mechanical engineering and research.
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Compact and flexible measurement data laboratory with precision measurement technology.
The LoggitoLab device is ideal for use in laboratory environments, research projects, quality control and other applications where precise data acquisition and analysis is required. It offers a reliable and user-friendly solution for monitoring and recording measurement data.
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Test stand for measurements with potential using an internal data memory.
The LogMessage device is a powerful data logger system designed for the reliable acquisition and recording of measurement data. It offers a variety of analog and digital inputs to connect different sensors and signals. The device records the data with high accuracy and saves it to an internal memory or external storage media.
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