Head office
SECO Sensor Consult GmbH
Am Bleichanger 1
96450 Coburg
Phone: +49 (0)9561 869141
Fax: +49 (0)9561 869149
info@seco-sensor.de
Web edge control:
Everything on track – thanks to real-time edge monitoring.
Measuring principle:
In web edge control, two ultrasonic transducers are usually arranged opposite each other in a measuring fork. These work in transmitter-receiver mode. The web material is inserted into the fork and is located in the sound path between the transmitter and receiver. Depending on the position of the web, the sound path is covered to varying degrees. The position of the web edge is monitored in real time based on the intensity of the received signal. For ideal measurement results, choose our tried and tested pulsed transducers.
Transducer specification:
- Real-time measurement thanks to fast decay and high repetition rate
- Large measuring range due to arrangement of the transducers in multiple arrays
- Optional direct mounting in customer-specific measuring fork
Application examples:
Newspaper printing, paper industry, textile production, film industry
Double sheet control:
Everything simple? – Recognize double bends quickly and reliably.
Measuring principle:
In double sheet testing, two opposing ultrasonic transducers typically work according to the transmitter-receiver principle. The intensity of the transmitted signal is used to detect double sheeting. For large-area measurement without crosstalk, we recommend arranging our ultrasonic transducers in multiple arrays. Pulsed transducers or our innovative multi-use transducer are perfect for use in arrays.
Transducer specification:
- High signal voltage for transmission measurement
- Large-area measuring operation thanks to multiple array design
- Very fast measurements thanks to high repetition rate
Application examples:
Printing, film and textile industry, cash dispensers, label recognition
Flow measurement:
Maintenance and calibration-free – precise flow measurement via ultrasound
Measuring principle:
The flow measurement typically works with two ultrasonic transducers in transmitter-receiver mode. The sound path is at a defined angle to the flow direction. The flow velocity and thus the volume flow of the gas can be calculated quickly and accurately from the difference in the sound propagation time. As ultrasonic flow measurement works without moving parts, the devices are wear-free and maintenance-free.
Transducer specification:
- High repetition rates thanks to fast swing-in and ringout
- Small designs ensure largely undisturbed flow conditions
- Maintenance-free thanks to the absence of moving parts
Application examples:
Gas meters, spirometry in medical technology, O2/CO2 sensors
Level measurement:
Half full or half empty? – Precise level measurement by ultrasound
Measuring principle:
An ultrasonic transducer works in pulse-echo mode to continuously monitor the fill level in a container. The distance between the transducer and the surface of the medium is calculated from the transit time of the signal and the known speed of sound. For an exact measurement with a long range, we recommend our focused transducers. We offer a broad portfolio of products in this area. Our largest ultrasonic transducer measures up to 8 meters with an installation diameter of 6 cm. Our smallest ultrasonic transducer has an installation diameter of just 6 mm and enables reliable measurement in the smallest vessels.
Transducer specification:
- High signal voltage and narrow sound beam
- Reliable function even when wet, dusty or dark
- Robust, durable and chemically resistant
Application examples:
Level measurement from above on liquids and bulk solids in silos & tanks, measurement in small vessels (e.g. pipettes)
Wind measurement:
Precisely measure wind speed and wind direction – even in stormy times.
Measuring principle:
A typical anemometer consists of two pairs of opposing ultrasonic transducers that are arranged at 90° to each other and operate in transmitter-receiver mode. The speed and direction of the wind can be determined quickly, precisely and maintenance-free by means of an exact differential measurement of the respective sound propagation times. For reliable operation in cold measuring environments, we can optionally equip the ultrasonic transducers with a suitable heater.
Transducer specification:
- Wide beam width for a strong signal even when blown away by high wind speeds
- Optional heating for reliable measurement below the freezing point
- Optional water and dirt-repellent front surface coating
Application examples:
Wind turbines, environmental monitoring, smart home applications, navigation
Contact us to optimize your ultrasonic sensor technology
As a company looking for high-quality ultrasonic transducers for sensor technology, we invite you to contact us. At SECO Sensor you will receive proven standard transducers, customized solutions and special developments for complex and challenging measurement tasks. Based on our many years of experience, we advise customers from the initial idea through prototype construction to series production.
Contact us today and let’s set new standards in ultrasonic sensor technology together! I look forward to your inquiry.
Eugen Gergert
Managing Director
What makes our ultrasonic transducers so unique?
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.
High-quality piezo ceramics “Made in Germany”
Another key to the outstanding quality of our ultrasonic transducers is the use of premium PZT ceramics (piezoelectric materials) – preferably locally sourced and of high quality. This enables low dispersion of small signal values and geometry and ensures that sensors with our transducers function reliably and accurately even in the most demanding measurement environments. SECO Sensor offers suitable ultrasonic transducers for numerous industrial applications. Take a look at our product finder.
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.
Two operating modes of our ultrasonic transducers – optimal depending on the measuring principle
SECO Sensor specializes in the development and manufacture of high-quality ultrasonic transducers that are used in various sensor applications. Depending on the measuring principle, one of the two proven operating modes is selected for our ultrasonic transducers:
Pulse-echo operation
In this method, a single ultrasonic transducer typically emits defined ultrasonic signals. These signals are reflected by a surface or object and return to the transducer as an echo. The transducer therefore works as both a transmitter and a receiver. The distance to the object can be precisely determined by measuring the time it takes for the sound to travel back and forth.
Ideal for the following applications:
- Distance measurement: Determining the distance to an object, for example in automation, agriculture, robotics or logistics.
- Level measurement: Determination of the fill level in containers of any size without direct contact with the medium, for example in agriculture or automation.
- Presence check: Detection of whether an object is present or not.
Transmitter-receiver operation
Two or more ultrasonic transducers are usually used here. Typically, one transducer works as a transmitter and the other as a receiver. The transmitter emits ultrasonic signals, which are picked up by the receiver. Changes in the medium between the transmitter and receiver influence the received signal, which is used for measurement.
Ideal for the following applications:
- Flow measurement: Determination of flow velocity and volume flow of gases, for example in gas meters or in medical technology.
- Wind measurement: Detection of wind speed and wind direction, for example in wind turbines, environmental monitoring or navigation.
- Web edge control: Monitoring the position of material webs on a machine, for example in the printing, film or textile industry.
- Double sheet inspection: Inspection for double or multiple layers of sheets, for example in the printing, film or textile industry.