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Ultrasonic transmitter for tightness testing
SDT 8 SDT International

This small portable multihead ultrasonic transmitter is equipped with eight (8) ultrasonic transducers. Each transducer is frequency and power stabilised. These are localized all around the unit, for an 8 x 125 mW ultrasonic power. They transmit in the volume of a hemisphere.
The SDT 8 generates two commutating ultrasonic frequencies. This produces a recognisable sound, which facilitates the detection of leaks, even in noisy environments.
It is also equipped with a 6 position selector, which allows the choice of the ultrasonic power. It is used in situations where the emitted ultrasonic power must be adjustable to the volume that has to be controlled.