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Ultrasonic piezo transducers have the capacity to operate at extremely high frequencies beyond the human hearing. This allows them to be used in various research fields using ultrasound to measure flow velocity. At Signal Processing SA, we develop a variety of transducers compatible with our Doppler velocimeters to cover a diverse range of applications.
(Our UDOP software allows you full flexibility to fine tune your measurements, adjusting parameters such as ultrasonic frequency, depth and piezo diameter.) -> mentioned in transition bloc.
We offer many transducers to cover a very wide range of applications.
You will be able in the following page to select the transducer that better fit your needs, by selecting the ultrasonic frequency and the diameter of the piezo element, the temperature range and the sizes of the case.
But if you do not find what you need, you are welcome to ask and we will offer you a custom design, which do not increase the cost and the delivery delay most of the time!
This ultrasonic sensor has been developed and designed with the collaboration of one of the most wellknown research team, HZDR (Dresden Germany), who patented this new design and concept of wave guide. Manufactured under license, ….
This ultrasonic sensor has been developed and designed with the collaboration of one of the most wellknown research team, HZDR (Dresden Germany), who patented this new design and concept of wave guide. Manufactured under license, ….
The insertion loss characterizes the sensitivity of a transducer.
In the following page you will find the method we recommend and use for its measurement.
The insertion loss characterizes the sensitivity of a transducer.
In the following page you will find the method we recommend and use for its measurement.
At Signal Processing SA, we can design transducers tailored for your research purposes, often at no additional cost.
High frequency transducers are essential to measuring fluid velocities. The piezo transducer generates ultrasonic pulses when an electric signal is applied. When receiving ultrasonic waves, piezoelectric signals are produced.
Our transducers can be immersed in liquids, withstand hostile environments, and operate at high temperatures (230 degrees Celsius) and pressures of several tens of bars.
Our velocimeters can measure the velocity of both translucent or opaque liquids by emitting ultrasonic pulses into the liquid and measuring the frequency of the reflected sound waves.
In collaboration with HZDR in Germany, we have developed a waveguide paired with a specialized piezo ceramic transducer designed to connect to our Doppler DOP velocimeters for measurements at temperatures up to 600 degrees Celsius.
Every velocimeter comes with our interactive UDOP software, giving you full control to adjust transducer parameters, such as frequency, depth, and active element diameter.
Established in 1990 as a spin-off from the Federal Institute of Technology in Lausanne (EPFL), Signal Processing SA is a test and measurement company located in Savigny, Switzerland.
We focus on creating innovative ultrasonic instruments for researchers. Our product range includes ultrasonic velocity profilers, Doppler velocimeters, and highly sensitive ultrasonic piezo transducers, all designed to meet demanding measurement requirements with cutting-edge technology.
We do our best to make our customers successful.
This is reflected both in the features of our products and in the level of service and support we provide to our users. We are committed to providing a high level of technical expertise, ensuring prompt responses within one business day or less and thorough documentation for all users.
Our ultrasonic piezoelectric transducers are designed to be used with our instruments, but can, if certain conditions apply, be used with other instruments. Our velocimeters measure velocity in clear or opaque liquids, primarily serving fluid mechanics labs and medical blood flow research.
Our software UDOP, included with our velocimeters, will provide the reference of the needed transducer once you entered the parameters required.
The ultrasonic transducers vary depending on the diameter of the piezo ceramic, the frequency range and the operating temperature.
An ultrasonic piezoelectric transducer is a specialized device that converts electrical energy into ultrasonic energy and vice versa, utilizing the piezoelectric effect. This phenomenon occurs in certain materials, known as piezo components, which generate an electrical charge when subjected to mechanical stress. Conversely, when an electric field is applied to these materials, they change shape slightly, allowing them to produce sound waves.
In practical terms, these transducers operate by applying a high-frequency voltage to the piezoelectric material. This causes the material to vibrate and emit ultrasound waves at frequencies typically in the range of several megahertz. The emitted sound waves travel through a medium, such as air or liquid, and interact with objects in their path. When these waves encounter a boundary, they reflect back towards the transducer, where the process is reversed. The reflected sound waves induce vibrations in the piezoelectric material, generating a voltage output that can be measured.
Ultrasonic transducers are employed in various applications, such as medical imaging, where they help create images of internal structures by emitting sound waves into the body and analyzing the reflections. In industrial applications, they are used for level sensors to determine fluid levels in tanks, as well as for ultrasonic cleaning, where they help remove contaminants from surfaces by generating high-frequency sound waves that agitate the cleaning fluid.
The efficiency of these devices stems from their ability to convert mechanical energy into electrical signals with high precision. The choice of materials and design, including custom shapes and configurations, can significantly impact their performance. For instance, specific designs can enhance resonance, improving the transducer’s ability to focus energy and increase sensitivity to changes in motion or distance.
The advantages of ultrasonic piezoelectric transducers include their non-invasive nature, ability to operate in certain environments (like high temperatures and pressures), and versatility across various applications. They can be tailored to suit different needs by using two materials that exhibit the piezoelectric effect in a complementary way, thereby optimizing their functionality for specific tasks.
A piezoelectric effect ultrasound transducer is a device that utilizes the piezoelectric effect to generate and receive ultrasonic waves. The principle underlying this technology is based on the ability of certain materials to convert ultrasound energy into acoustic energy, which can then be processed for various applications.
When an electric field is applied to a piezoelectric material, it undergoes mechanical deformation due to the inverse piezoelectric effect. This deformation allows the material to vibrate at ultrasonic frequencies, producing sound waves that can propagate through different media. In applications such as medical imaging and industrial sensing, these transducers are essential for generating precise ultrasound pulses that can provide valuable information about the internal structures of objects or the properties of materials being analyzed.
In medical imaging, for instance, a piezoelectric ultrasound transducer serves as both a transmitter and a receiver. It emits ultrasonic waves into the body, which then reflect off tissues and organs. The reflected waves return to the transducer, where they are converted back into electrical signals. This process allows for the visualization of internal structures, facilitating diagnostics and assessments in healthcare.
In industrial contexts, these transducers are used for various sensing and measurement applications. They can determine the speed and direction of moving objects by analyzing the frequency shifts in reflected sound waves (a principle known as Doppler effect). This capability is particularly useful in monitoring fluid flow in pipes or assessing the motion of machinery.
The design of piezoelectric ultrasound transducers can vary significantly, leading to different shapes and configurations suited for specific tasks. Factors such as size, shape, and material composition play a crucial role in determining their overall performance. In certain environments, such as those with high temperatures or pressures, robust designs are required to ensure reliable operation.
Additionally, these ultrasound transducers can be combined with advanced technologies for enhanced functionality. For instance, they can be integrated into systems for welding, where precise control over ultrasonic energy is crucial for joining materials without damaging them. The flexibility in design allows for customization according to the requirements of different applications.
In summary, both ultrasonic piezoelectric transducers and piezoelectric effect ultrasound transducers are vital components in modern technology that harness the unique properties of piezoelectric materials. Their ability to convert energy forms efficiently makes them indispensable across a multitude of industries, from healthcare to manufacturing. Their versatility continues to drive innovation and improve performance in various fields.