Ultrasonic Transducers

Key components for sensors
The sensor solutions for our customers span simple presence control to distance measurement and extend to complex through flow measurements in gases. We supply key components for their success. Robust, maintenance-free ultrasonic transducers that display impressive qualities and have been key in our lead on the world market.


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Our ultrasonic transducers

Ultraschallwandler

General information on our ultrasonic transducers

​Transducers are the most important components in ultrasonic sensors. They are the transmitter of electrical signals in ultrasound and as receiver convert the minimal pressure fluctuations of the ultrasound in the air into electrical signals.
Ultrasound operates at a frequency beyond human hearing and offers fascinating possibilities. It can determine, in the simplest example, the presence or the distance of an object.

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However, acoustic signals can contain even more information. They are capable of providing information on the composition and the motion state of the reflector or the transport medium and to recognise information patterns. With corresponding effort ultrasound can also be employed for orientation and is used as such by bats and dolphins.

A piezoceramic disc is the motor of the transducer and has a significant influence on its quality. In order to meet our own quality standards, we place high demands on our suppliers. This is why we purchase piezoceramic that has been specially tailored to our needs from our main supplier  PI Ceramic.

However, equally crucial is the quality of the acoustic adapter material. It is permanently bonded to the piezoceramic and optimises the transmission of the noise between the piezoceramic solid body and the air. In order to achieve the best possible results, we only utilise our own adapter material made of especially light, compressive resistant epoxy, which is subject to only minimal fluctuation in comparison with the products of external producers.
Depending on design, our transducers can work at frequencies between 60 - 600 kHz and can thus achieve a range of between 1 cm and 10 m. High resolution in the millimetre range and high repetition rates < 10ms are possible.

Richtscharfe Ultraschallwandler (richtscharfe-ultraschallwandler.jpg)Ultrasound transducers from SECO Sensor are extremely robust, maintenance free and reliable even in the harshest of conditions. They cover a broad temperature range and are insensitive to dust, moisture and many chemicals.
We have vast experience in the reactionless assembly of oscillators in customer-specific casings.

Sensors for automation

Sensors for automation

​The automated production of industrial goods in the highest quality would be inconceivable without sensors. Applications for sensors in automation include distance and filling measuring, presence verification and level regulation.
They verify the presence or the distance of objects and thus provide state variables for control systems.

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We have a solution on hand for almost any application: classic transducers with narrow noise beams and long range or impulse transducers for short ranges and ranges up to 2 kHz. By employing different construction sizes we can offer transducers in the frequency range from 60 - 600 kHz as required. 

We solve the demanding requirements for interference protection by using coaxial cables and a certified, conductive coating of the adaptor body or casing.


Datasheets of our ultrasonic transducers as downloadable PDF files:

DB008 | DB010 | DB012 | DB020 | DB021 | DB040 | DB050 | DB125 | DB135 | DB150

Sensors for paper control systems

Sensors for paper control systems

​High winding speeds and large throughput, dusty conditions and an enormous noise level make substantial demands on ultrasonic transducers employed in paper processing.
Here SECO Sensor converts boast maximum noise pressure, high measuring rates, interference noise resistance and high operational safety.

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The serial linking of oscillators in lines or arrays enables a tight-meshed scanning of surfaces and a broad sensing range without mechanical adjustment. 


SECO Sensor ultrasound transducers are used, for example, to reliably recognise labels and carrier material required in the packaging industry and are also to be found in the double sheet test to protect machines and avoid rejects. They are equally at home in simple desktop scanners as well as in professional offset printing machines or money dispensers.


Datasheets of our ultrasonic transducers as downloadable PDF files:

DB125 | DB135 | DB150 | DB029

Sensors for medical devices

Sensors for medical devices

S​ECO Sensor supplies manufacturers of anaesthetic and respiratory devices. Our transducers also do valuable service in equipment for respiratory analysis and spirometers to test pulmonary function.
The focus here is on the provision of low tolerance transducer batches that can be also be selected and paired in critical applications.

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We fulfil the extremely strict hygienic demands in this sector by careful material selection and by employing special manufacturing processes. Moreover, we naturally believe complete trackability and documentation are a must.


Datasheets of our ultrasonic transducers as downloadable PDF files:

DB125 | DB135 | DB150 |

Sensors for wind measurement

Sensors for wind measurement

​Ultrasonic anemometers record wind direction and wind speed in one, two or three dimensions. To do this weather-resistant ultrasonic transducers or transducer pairs are required with virtually identical characteristics employable across a broad temperature range. They need to function both as a transmitter and receiver. 

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SECO Sensor masters the challenges by ideally adapting the transducer design to the respective characteristics of the basic components. If required the transducers can also be selected. 

We can also draw on a wealth of experience when adding the transducers to customer-specific casings. Experience that our customers benefit from in their search for market-driven solutions that are realisable at short notice - even for already existing carriers.


Datasheets of our ultrasonic transducers as downloadable PDF files:

DB125 | DB135 | DB029 |