SIRIUS® Modular
Modular Data Acquisition (DAQ) System
Electrodynamic Vibration ShakersGeneral-purpose, Modal and Inertial Exciters
Our range of shakers covers forces from 5 N to 440 N and is available in general-purpose, modal, and inertial configurations. They feature both integrated and stand-alone amplifiers that are easy to use. These electrodynamic permanent magnet shakers are compact, lightweight, and powerful, making them ideal for modal and vibration testing. Despite their small size, they offer a high DUT capacity.
highlights
Lightweight, Durable, Portable
Vibration shakers are built with high-quality materials for durability and portability. Their compact, lightweight design makes them easy to transport and mount, ensuring excellent mobility for a wide range of applications.
Included Integrated Amplifier
Small-sized PM and MS shakers are designed with integrated amplifiers, making setup and operation simple and improving portability. Just plug in the power cable, and the shaker is ready to use. Some models also offer external amplifiers for added performance.
Integrated Signal Generator
Most vibration shakers feature built-in sine signal generators, enabling quick testing and structural behavior analysis. This eliminates the need for additional external equipment, making experimentation seamless and efficient.
Exceptional Low-Frequency Performance
These shakers provide optimal force over a wide frequency range, typically from 10 Hz to 3.000 Hz. Smaller models can reach frequencies up to 7.500 Hz, making them versatile for various testing applications.
Adjustable Trunnion and Handles
Adjustable trunnion bases and ergonomic handles enable the shakers to be positioned in any orientation, providing greater flexibility for testing.
Integrated Screen
Most small and larger amplifiers include an integrated display that shows the signal frequency or operating mode. This feature allows users to quickly identify whether the operating mode is set to external or internal signals and easily monitor frequencies, ensuring simple yet precise testing.
Best Amplifier for the Job
Small shakers feature a compact external amplifier that delivers high power despite its size. Larger shakers offer two amplifier options: a lightweight, portable model or a more powerful one with superior signal quality, though larger and heavier.
Dewesoft quality and 7-year warranty
Enjoy our industry-leading 7-year warranty. Our data acquisition systems are made in Europe, utilizing only the highest build quality standards. We offer free and customer-focused technical support. Your investment into the Dewesoft solutions is protected for years ahead.
Permanent magnet shakers
Designed for vibration and modal testing, these shakers offer exceptional performance in a small package. Despite their compact size, they boast a high Device Under Test (DUT) capacity. The PM-20 and PM-100 models come equipped with integrated amplifiers and sine wave signal generators, featuring frequency adjustments in 1 Hz increments.
Highlights:
Compact, lightweight, and powerful—perfect for general-purpose vibration testing.
Versatile for modal testing with the addition of a stinger set and adapter.
Integrated amplifiers and sine signal generators with adjustable frequencies (1 Hz to 15.000 Hz).
High DUT capacity, even in a small form factor.
Advantages:
Durable, portable, and user-friendly.
Adjustable trunnion base for flexible positioning.
Wide frequency range to accommodate diverse testing needs.
Applications:
Vibration testing of micro parts, assemblies, and electronics.
Shock testing and sensor calibration.
Fatigue and resonance testing.
Ideal for educational and research purposes.
Modal shakers
Modal testing can be conducted using either modal hammers or shakers. For repeatable high-frequency excitation or signal-controlled testing, modal shakers are the optimal choice. These lightweight yet powerful devices operate at frequencies up to 12.000 Hz, deliver force levels up to 440 N, and feature a maximum 25 mm (p-p) stroke.
Highlights:
Lightweight, high-performance shakers designed for modal testing with high-frequency excitation and signal control.
Force range from 20 N to 440 N and frequency up to 12.000 Hz, with a 25 mm (p-p) stroke.
Advantages:
Easily adjustable through-hole armature for modal stinger setup.
Portable and user-friendly design.
Flexible trunnion base for accurate positioning.
Applications:
Modal testing and structural dynamics in industries such as aerospace and automotive.
Dynamic characterization of components, machinery, vehicles, and large constructions.
Inertial shakers
Traditional electrodynamic shakers used in modal testing and in-flight aircraft tests are bulky and require time-consuming mounting processes. In contrast, the innovative design of Inertial Shakers offers exceptional portability and mobility. Their compact size makes them easy to mount and ideal for handheld applications, enabling quick and efficient measurements.
Highlights:
Compact and lightweight for maximum portability and versatility.
Optimized for low-frequency performance with the ability to mount at any angle.
Advantages:
Easily mountable at any angle, with high mobility for handheld use.
Smooth operation guided by low-friction bearings.
Exceptional low-frequency performance.
Applications:
Vibration and modal testing.
Automotive squeak and rattle testing, building resonance analysis, and more.
Widely used in civil engineering, shipbuilding, and educational research.
Amplifier integration
Smaller vibration shakers come with built-in amplifiers, providing plug-and-play convenience, a compact design, and excellent mobility.
The Inertial Shaker line features small yet powerful external amplifiers, offering the same functionality as integrated amplifiers while maintaining portability.
For 250N and 440N shakers, which require external amplifiers, we offer two options:
Lightweight and compact amplifier: Ideal for mobile applications.
Larger, high-performance amplifier: Delivers more power and superior performance, suitable for demanding tasks.
Data acquisition system integration
Our high-performance data acquisition systems are designed to complement our vibration shakers, creating an all-in-one solution for vibration testing and analysis. For the best combination, we recommend the SIRIUS modular data acquisition system, equipped with analog outputs for exceptional flexibility.
Key Features:
Direct IEPE sensor inputs with a 160 dB dynamic range for precise measurements.
Universal signal amplifiers compatible with virtually any sensor or signal type.
TEDS IEEE 1451.4 technology for automatic sensor detection, recognition, and configuration in the software.
Industry leading 7-year warranty - read more.
With our award-winning data acquisition software, you can set up measurements in under a minute. Each system includes:
A software license with free lifetime upgrades—no annual maintenance or upgrade fees.
Free online training courses for ease of use.
Free technical support
Our modular and expandable systems grow with your needs. Imagine an FFT analyzer with thousands of channels—our systems can scale from a single channel to an unlimited number, providing unmatched flexibility and future-proof performance.
Modal testing and modal analysis
In real-life applications, machine parts and mechanical systems are rarely under static loading. Most of the time they are excited by dynamic loads. The structure responds to these dynamic loads according to its dynamic parameters such as natural frequencies and mode shapes. Therefore, an engineer has to have a solid insight into the dynamic behaviour of the structure which has been designed. The process of finding the dynamic behaviour of a structure is called structural system identification.
Structural system identification consists of finding the transfer function of the system which is established by finding the modal parameters of the structure such as natural frequencies, damping, modal vectors, and residues.
The transfer functions of a structure can be obtained by mathematical modelling or by experimental methods. The experimental way to obtain the transfer function of a structure is achieved by measuring the response of the structure to a measured input. The responses are generally acceleration and the inputs or excitations are generally impulses or random/sine signals.
The impulse signal is easily generated by a modal hammer with a force transducer attached at its tip. The random or sine signal excitation requires modal vibration shakers. Moreover, if high-frequency excitation content or signal-controlled testing is desired, then modal shakers are the only excitation solution. Dewesoft modal shakers are lightweight and powerful modal shakers which can go up to 15,000 Hz and provide force levels up to 440N with a maximum 25mm stroke.
The modal shaker is attached to the structure and the desired excitation signal is applied to the structure via a signal generator. In the meantime, the responses of the structure are
measured and Frequency Response Functions are calculated which are used in the Modal Analysis calculations.
For more information check out Dewesoft Modal test and analysis solution.
Got Questions? We've Got Answers!
We've gathered all the answers you're looking for, neatly organized just for you.
A shaker is an electromagnetic device that is used for vibration testing for excitation of the structure under test. It's used for modal or endurance testing.
We have 3 different vibration shaker design types for different applications:
- Permanent magnet shaker
- Modal shaker
- Inertial shaker
Permanent magnet vibration shakers (DS-PM) are shakers with a mounting table on top, on which you can place your device under test.
Modal vibration shakers (DS-MS) excite the structure under test by a stinger and are used for larger structures or structures that can't easily be mounted to the Permanent magnet shaker table.
Inertial vibration shakers (DS-IS) are small in size and weight and hence used by mounting or pressing against the structure. They are portable and simple to use.
Modal and Permanent magnet shakers come in different sizes with 10N, 20N, 100N, 250N, and 440N of sinus output force. The Inertial shakers come in 4 sizes with 5N, 10N, 20N, and 40N of sinus output force.
Yes, PM/MS-20 and PM/MS-100 come with a pneumatic coupling that allows you to connect the shaker to compressed air for cooling. The PM/MS-250 and PM/MS-440 come with a cooling blower in the package.
IS vibration shaker models come "ready to work" out of the box with an amplifier. Smaller PM & MS shakers come with an integrated amplifier. For larger PM & MS shakers, you can choose between a 400W and 500W amplifier.
You can find all Dynalabs manuals, datasheets, and other technical documents on their official Downloads page. Visit the Dynalabs Downloads page here.
Still have questions?
Can't find the answer you're looking for? Our team is happy to answer your questions.
Related products
See and browse related and compatible data acquisition products.
SIRIUS® Mini
Portable 4-Channel Sound and Vibration Analyzer
DEWE-43A
8-Channel USB Data Acquisition (DAQ) System
SIRIUS® R2/R4
Compact medium to high channel count data acquisition (DAQ) systems
SIRIUS® R8
High-channel-count data acquisition (DAQ) system
DSI® Adapters
Sensor adapters for universal amplifiers