To record the response curve, the measured object, e.g. a 100 × 100 mm plate, is guided into the sound field of the ultrasonic sensor from the right and left. The output switches as soon as the sensor detects the front edge of the measured object. The front edge is represented by a blue line, while the black line marks the center of the measured object at the time of switching. On the product detail pages, the response curves always refer to the position of the center of the measured object (black line). For this reason, half the object width (50 mm for a plate of 100 × 100 mm, 12.5 mm for a round rod of 25 mm) is subtracted to determine the sonic cone width. If the black line, e.g. at 1,200 mm, has a width of +/–65 mm, the actual sonic cone width is +/–15 mm.
