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Contactless signal transmission

For the transmission of the ultrasonic signal and the energy supply of the transducer we use a maintenance-free capacitive transmitter. This contact-free technology has the advantage that there is no wear in/at this unit at all. In line with a preventive maintenance it is just necessary to clean the transmitter once in a while; totally in contrast to the slip ring technology, where the carbon brushes have to be replaced all over again, and where the slip ring has to be replaced after a limited operation time. Further the slip ring technology does only allow a limited speed with a negative effect on the testing throughput. The slip ring systems tend to generate sparks between the brushes and the slip rings. These sparks will be picked up by an UT electronics and will lead to false indications. With a contactless transmission system like ours, this is completely excluded.