Abstract: A radiometric measuring device for mounting at a container fillable with a filling substance. The measuring device, which is cost-favorable both in installation and operation, includes: A radioactive source, which, during operation, sends radioactive radiation through the container; at least two detectors, which serve for registering radiation passing through the container and for producing electrical pulse rates corresponding to the registered radiation; wherein the detectors are connected together and with a superordinated unit by a single line running outside of the detectors. The pulse rates and, in the form of offsets, status of the detectors are transmitted on the single line.

Abstract: A measuring instrument is provided, to which various ultrasonic sensors can be connected in a simple way. The measuring instrument has an electronic measuring instrument unit, to which various ultrasonic sensors can be connected, and having an apparatus for detecting the ultrasonic sensor that is connected, which apparatus, for detecting the ultrasonic sensor, causes the ultrasonic sensor to oscillate, picks up its oscillation behavior, and from that derives a sensor-specific variable.

Abstract: A measuring instrument is provided, to which various ultrasonic sensors can be connected in a simple way. The measuring instrument has an electronic measuring instrument unit, to which various ultrasonic sensors can be connected, and having an apparatus for detecting the ultrasonic sensor 5 that is connected, which apparatus, for detecting the ultrasonic sensor, causes the ultrasonic sensor to oscillate, picks up its oscillation behavior, and from that derives a sensor-specific variable.