SECO Sensor

Ultrasonic transducers

SECO Sensor

Ultrasonic transducers

Standard ultrasonic transducers –
Your instant solution

Proven standard transducers for professional applications

At SECO Sensor, we develop and manufacture innovative ultrasonic transducers for use in air and gases – powerful, durable and precise. Our transducers are central components of high-quality sensor solutions and are characterized by absolute reliability even under extreme operating conditions. They are maintenance-free and their excellent performance contributes significantly to the international market success of our customers. SECO Sensor delivers worldwide.

Short-term delivery possible

Cost-effective ultrasonic transducers

Visit us at trade fairs

Request our app for the selection

We are currently developing a store

Customized ultrasonic transducers – individualized

Standard ultrasonic transducer with individual adjustments

Our tried-and-tested standard ultrasonic transducers form the perfect basis for customizable solutions. They can be flexibly adapted. Whether housing, contacting, potting compound or additional equipment – we adapt to the requirements of your application. For example with:

Customized housings

Metal housing, brass sleeve

Mounting in array

Strand type and length

Pins, pads, plugs

Heater

EMC / front surface coating

Glass feedthrough

We will be happy to discuss your individual customization with you personally in a team meeting. Of course, you can define your task in advance using our prepared forms – so that we can start the customization process in a targeted manner.

Individually developed ultrasonic transducers

Your challenge becomes our task

Do you have a particularly complex measurement task and would like to utilize the full potential of our creative development department? Then you’ve come to the right place: we look forward to working with you to break completely new ground in the development of ultrasonic transducers – discreetly, confidentially and innovatively if you wish.

Rely on our development team

Innovative special solutions

High level of confidentiality

Even “crazy” ideas can be implemented

We are aware that innovation requires trust. That’s why we attach great importance to a partnership-based cooperation in which your ideas and information are in safe hands – from the first sketch to series production.

Standard? Customized standard?
A creation?

Which solution suits your project?

A SECO Sensor decision aid:

Based on 100+ customer projects in 2024


  • Standard
  • approx. 1 – 2 weeks
  • – proven standard
    – extensive portfolio
    – multi-use transducer
    – focused transducers
    – pulsed transducers
  • – “classic” applications
    – rapid replacement
    – first series of tests
  • Our classics for distance measurement, level measurement, etc.

  • Standard & Individual
  • approx. 2 – 4 weeks
  • €€
  • Adaptation of:
    – Housing
    – Contacting
    – Additional equipment
    – Potting compound
  • – Existing customer housing
    – Difficult installation situations
    – Extreme environmental conditions
  • Transducer with heating and EMC coating in customized housing

  • Research & Development
  • from 12 weeks
  • €€€
  • Adaptation of:
    – Material selection
    – Electroacoustics
    – External geometry
    – Environmental resistance
  • – Research projects
    – Special applications
    – Unusual ideas
  • Pressure-stable and high-temperature resistant transducer on glass feedthrough

Why ultrasonic transducers from SECO Sensor?

High-quality materials

It starts with our tried-and-tested material concept consisting of specially developed and in-house produced acoustic matching materials, self-assembled strands and high-quality potting compounds according to our own recipes. These innovative materials enable fine, individual tuning of the electro-acoustic properties of the transducer and ensure optimum sound transmission.

Another key to the outstanding quality of our ultrasonic transducers is the use of premium PZT ceramics (piezoelectric materials) – preferably from German suppliers. These advanced ceramics, made from a material specially specified for SECO Sensor, are crucial for the effectiveness of the ultrasonic transducers, as they have a high quality and low fluctuations. This guarantees that sensors with our transducers work reliably and accurately even in the most demanding measurement environments.

The combination of material and experience

Our expertise is not limited to materials. We have decades of experience in the development and series production of ultrasonic transducers for air and gases. The know-how of our product managers and our production staff enables us to offer customized solutions for a wide range of applications. Whether you need ultrasonic transducers for distance measurement, double sheet control or wind measurement – we have the experience and the technology to support you with your individual measurement task.

Our customers know that the quality of the ultrasonic transducer is a decisive factor for the overall quality of their sensors. With ultrasonic transducers from SECO Sensor, you can be sure that your sensors will deliver reliable and accurate measurement results even under extreme environmental conditions or in challenging installation situations.

High-quality materials – for outstanding quality

Our aim is to build high-quality, durable and robust ultrasonic transducers with outstanding electro-acoustic properties. We pay particular attention to the four main components: piezo disk, matching material, potting compound and stranded wire. With many years of experience, we manufacture our own material for this or source it from reliable suppliers with the highest quality standards. In this way, we ensure that our customers receive only the best products – with every ultrasonic transducer that leaves our company.

Piezo disk

We source our piezoceramic transducers from selected suppliers with above-average quality standards – preferably from Germany. They are characterized by high efficiency and minimal geometric and electrical tolerances.

Matching material

We produce our matching material in-house according to our own proven recipes. To achieve the best possible results, we use a particularly light, pressure-resistant epoxy filled with hollow glass beads, which is subject to only minimal fluctuations compared to products from external suppliers.

Potting compound

Potting with our specially formulated, soft-elastic polyurethane foams gives your transducer both mechanical stability and excellent structure-borne sound suppression – especially in cold conditions. We use customized potting compound recipes to achieve optimum acoustic parameters, adapted to your requirements.

Stranded wire

We mainly assemble our coaxial, Teflon and PVC strands ourselves. This enables us to ensure the highest quality and implement customer-specific adaptations quickly and easily. Short delivery times are also possible for special sizes. Our direct access to the production process allows us to carry out close checks and ensure consistently high strand quality, e.g. in accordance with IPC-A-610, class 3.

About us

30 years of innovation in ultrasonic sensor technology

SECO Sensor develops and manufactures its ultrasonic transducers entirely in-house – Made in Germany. Every step, from the careful selection of materials to the final quality inspection, is under our direct control.

Your advantages:

  • Own production in Germany
  • R&D department for special solutions
  • High-quality components

Do you have questions about our ultrasonic transducers?

Do you need support in selecting the right ultrasonic transducer? Do you need a customer-specific adaptation or an individual new development for an unusually complex measurement idea?

We will be happy to advise you and look forward to your inquiry!

Your contact Managing Director Eugen Gergert from SECO Sensor

Eugen Gergert

Managing Director

More information about our ultrasonic transducers:

For almost thirty years, we have specialized in the development and production of air ultrasonic transducers. Our transducers are characterized by their high flexibility and resistance in numerous sensory measurement tasks. Even adverse measuring conditions have no negative effect on the measurement result. For use in particularly demanding environments (salt, cold, heat, chemicals), we equip your transducer with a water- and dirt-repellent coating on the front surface or an additional heater, or adapt the material of our components to the corresponding area of application. Find out more about our design options.

Using ultrasonic waves, our transducers – like bats – determine the presence or distance of a reflective object. They also obtain information about the nature and state of movement of a reflector or transport medium. Depending on their size, our transducers operate at nominal frequencies ranging from 80 to 500 kHz and achieve ranges of 2 centimetres to 8 meters, depending on the measurement task. The electro-acoustic properties of your transducer – as well as the physical design – can be adapted to the boundary conditions of your measurement task. Find out more about our standard products or browse through our special solutions.

High-quality material as the key to outstanding ultrasonic transducers

The functionality of our ultrasonic transducers depends crucially on the quality of the piezo ceramic, the matching material and the potting compound. We obtain our piezo ceramics – specially formulated for us – from our main supplier in Germany. We manufacture the matching material in-house according to proven recipes. For the damping matrix, we use complex potting compound systems that we have optimized over decades of experience. We also assemble our strands in-house. This enables us to adapt all components flexibly, quickly and easily to individual customer requirements.

Our product range is divided into three transducer types. Their functionality is based on the same technology, which we have further developed with regard to special application benefits. We distinguish between multi-use transducer, directional and pulsed transducers. Our multi-use transducer are flexible all-rounders whose electro-acoustic properties we have taken to a new level with the further developed SC5X series. You can find out which transducer types are best suited to your application here.

Customized special solutions – no problem!

We are also happy to create new products for unusual measuring tasks, adapt your transducers to your specific application as part of a customization or further develop our existing products. Talk to us! We are looking forward to the challenge.