Measuring principle

Double sheet control

The double sheet control ensures that only one printed sheet runs through the machine. Ultrasonic transducers operate in transmitter-receiver mode and measure the transmission of the signal through the web material. Changes in signal strength ensure double sheet detection in real time. This enables fast reactions and avoids rejects, downtimes and production errors – for an efficient and trouble-free production process.

Our customers use ultrasonic transducers for double sheet testing for applications such as

Printing industry
Film processing
Textile industry
Money printing

SECO transducer for double sheet control

Ultrasonic transducers from SECO Sensor have been used in the printing, textile and film industries for many years. Whether in newspaper printing or the production of banknotes – fast and reliable detection of double layers on the web is essential for efficient and smooth production. Pulsed transducers in multiple arrays in particular have proven their worth. They measure over large areas thanks to well-focused sound beams without crosstalk within the array.

Ultrasonic transducers for double sheet testing are impressive:

Low rise and decay times
High repetition rates for fast measurements
Well-focused sound beam
Low crosstalk in the array
Robust construction for long-term use

Advantages of SECO ultrasonic transducers

SECO Sensor develops and manufactures ultrasonic sensors for applications where maximum precision, speed and resilience are required. Even under demanding environmental conditions in industrial environments, they deliver consistently reliable results.

High measuring speed

Optimized transducer design for short transient and decay times and high repetition rates

Can be used with any material

Measurement also over reflective or transparent materials, foils, paper, textiles

contactless & maintenance-free

Low wear due to contactless operation, maintenance-free thanks to no moving parts

Large scanning range

Also proven as multiple arrays for large scanning ranges without electrical crosstalk

robust & resistant

Resistant to environmental influences, reliable even in industrial environments

SECO recommends for the double sheet control:

Pulsed transducer or multi-use transducer
Arrangement in measuring forks or multiple arrays
Direct mounting in customer-specific housing
Versatile additional equipment and customization options

To the product finder

SC125

Proven 200 kHz pulsed transducer – individually or in an array, tried and tested in reliable web edge control for the printing, film and textile industries

SC135

Robust impulse ultrasonic transducer with sturdy sheet metal housing. Excitation with short echo pulse and fast decay for measurements with high repetition rate

SC524

Ultrasonic multi-use transducer of the new SC5X series with newly developed oscillation technology and excellent ratio of decay time to echo voltage.

Ultrasound double-sheet control explained simply

In applications in printing technology, film processing or the textile industry, ultrasonic transducers monitor the occurrence of double layers in the web materials. Pulsed transducers in multiple arrays are used for large-area scanning.

Whether individual or standard –
we will be happy to advise you.

We offer customizable transducer solutions that are specifically tailored to your requirements. SECO develops, produces and supplies ultrasonic transducers for double sheet testing in various industries:

Film and packaging industry
Paper processing
Printing technology
Textile industry

ralph.schenderlein@seco-sensor.de +49 (0)9561 869179

Ralph Schenderlein

Product manager

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SECO Sensor ultrasonic transducers - standard solutions, customized solutions or completely individual

Ultrasound in various industries

Discover the wide range of applications for ultrasonic sensors in double-sheet inspection – from printing technology to film processing. Find out how our ultrasonic transducers can optimize your processes!

Web edge control in packaging with ultrasonic transducers from SECO Sensor

Film processing

In the film industry, double sheet control ensures the detection and avoidance of double layers in the web material. High repetition rates and fast measurements are possible thanks to short rise and decay times. A major advantage of ultrasonic technology is the measurement of transparent and reflective materials.

To the industry overview

Printing technology

Double sheet detection with ultrasonic transducers is used in the printing industry for the rapid detection of double layers in paper sheets. An arrangement of several transducers in a multiple array enables large-area scanning and fast reaction to the smallest deviations in signal strength.

Learn more

Textile industry

Double sheet detection in the production of fabrics and textiles is carried out without contact using ultrasonic transducers in measuring forks or multiple arrays. They detect double sheets in the web material in real time and enable fast correction. This minimizes waste and maximizes the efficiency of your production.

To the industry overview

Ultrasonic transducers for double sheet testing – tried and tested or customized

A sensor for double sheet detection uses ultrasound to detect double layers in sheets of paper, film or even thin metal. Thanks to fast settling and decay times, measurement is possible in real time. Depending on the measuring task, you can use our tried and tested standard items. However, we would also be happy to work with you to develop a special solution for your individual application.

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Download TÜV certificate according to ISO 14001

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

Double sheet control

SECO transducer for double sheet control