Abstract: A jam switch to identify a jam of containers, more particularly bottles, transported on a conveyor of a conveyor mechanism, comprising an ultrasonic sensor. The ultrasonic sensor transmitting an ultrasonic signal and receiving an echo signal reflected back by a container present in a detection region of the jam switch. A reflector with a sound-deflecting sound deflection surface is disposed upstream of an aperture which is part of the ultrasonic sensor and which emits the sound lobe. The sound deflection surface being shaped and arranged such that the sound lobe emitted by the ultrasonic sensor is deflected in such a way at the sound deflection surface that the sound lobe, in relation to the sensor axis, is expanded with a divergence angle of 90° to 180° in a first plane and is unchanged or even more sharply focused in a second plane aligned at right angles to the first plane.

Abstract: A sensor and a method for detecting a position of the sensor relative to a guide surface, comprising a housing and an electronic analysis device which outputs measurement values for the position of the guide surface on the basis of the measurement signals. The sensor contains an ultrasonic transducer array, each of the two outer ends of which is additionally equipped with a respective reference ultrasonic transducer and a respective reflector surface flush with the reference piezo disc at a distance from the base side, said ultrasonic transducers and reflector surfaces being inclined by 45° relative to the base side and pointing towards one another, thus forming a reference measurement path with a known length between the two reference ultrasonic transducers. In the method for detecting the relative position, the measurement values are corrected with respect to environmental influences by measurements in a reference path.

Abstract: A sensor and a method for detecting a position of the sensor relative to a guide surface, comprising a housing and an electronic analysis device which outputs measurement values for the position of the guide surface on the basis of the measurement signals. The sensor contains an ultrasonic transducer array, each of the two outer ends of which is additionally equipped with a respective reference ultrasonic transducer and a respective reflector surface flush with the reference piezo disc at a distance from the base side, said ultrasonic transducers and reflector surfaces being inclined by 45° relative to the base side and pointing towards one another, thus forming a reference measurement path with a known length between the two reference ultrasonic transducers. In the method for detecting the relative position, the measurement values are corrected with respect to environmental influences by measurements in a reference path.