Abstract: An ultrasonic flow measuring device, which determines volume and/or mass flow of a medium in a pipeline, or in a measuring tube. The flow measuring device includes a plurality of ultrasonic sensors, which emit and/or receive ultrasonic measurement signals along defined sound paths. The control/evaluation electronics of the flow measuring device is divided into an on-site electronics, in which at least one switch is provided, via which the ultrasonic sensors, arranged in different sound paths, can be driven and/or queried, and at least one remote, control/evaluation unit, wherein the control/evaluation unit so switches the at least one switch, that the driven and/or queried, ultrasonic sensor, or the driven and/or queried pair of ultrasonic sensors, is activated and provides measured values.

Abstract: An ultrasonic flow measuring device which provides a flow measuring device characterized by a low electrical current consumption and low power uptake. At least one component of high power uptake with a control/evaluation unit is provided, with the control/evaluation unit being designed such that the component of high power uptake is operated intermittently in a measuring phase and in an idle phase, with the component being activated in the measuring phase, while, in the idle phase, the component exhibits a reduced power uptake or is completely turned off.

Abstract: An apparatus for the positioning of a clamp-on flow measuring device on a containment, which has a medium flowing through it. The apparatus includes at least two ultrasonic transducers, which emit measuring signals into the containment and/or receive measuring signals from the containment, a positioning unit for the variable positioning of the ultrasonic transducers on the containment, a control/evaluation unit, which calculates from predetermined process and/or system variables a characteristic, desired variable of the measuring signals and which determines on the basis of a comparison of the calculated, desired variable with the corresponding, measured, actual variable, whether the ultrasonic transducers are optimally positioned or whether the position of the ultrasonic transducers need to be changed, and an indicating unit, which indicates to operating personnel a required change of position and/or the direction in which a change of position needs to be made.

Abstract: A method and a device for determining and/or monitoring the volume flow rate and/or mass flow rate of a medium flowing through a container. In the case of the device, such is an ultrasonic flow measuring device, which works on the basis of the travel-time-difference principle. Additionally, a technique is presented whereby, on the basis of the results of measurement, also information is provided concerning change in some other system and/or process variable. To this end, the currently measured, actual measuring signals, or the corresponding actual measuring data, is compared with corresponding, stored set measuring signals, or set measuring data; a report is output, when a deviation arises between the set measuring signals, or set measuring data, and the actual measuring signals, or actual measuring data.

Abstract: An ultrasonic flow measuring device, which determines volume and/or mass flow of a medium in a pipeline, or in a measuring tube. The flow measuring device includes a plurality of ultrasonic sensors, which emit and/or receive ultrasonic measurement signals along defined sound paths. The control/evaluation electronics of the flow measuring device is divided into an on-site electronics, in which at least one switch is provided, via which the ultrasonic sensors, arranged in different sound paths, can be driven and/or queried, and at least one remote, control/evaluation unit, wherein the control/evaluation unit so switches the at least one switch, that the driven and/or queried, ultrasonic sensor, or the driven and/or queried pair of ultrasonic sensors, is activated and provides measured values.

Abstract: A pulse generator including a control logic operating, by control pulses, a switch connected on the input side with a voltage supply unit and delivering a pulse voltage on the output side, there is connected, between control logic and the switch, a capacitor, which decreases the pulse voltage when the pulse frequencies are too low, and, additionally, arranged between voltage supply unit and switch, an RC-member, which decreases the pulse voltages when the repetition rates of the control pulses are too high, in order to enable use of the pulse generator in the explosion-protected area.

Abstract: A method and a device for determining and/or monitoring the volume flow rate and/or mass flow rate of a medium flowing through a container. In the case of the device, such is an ultrasonic flow measuring device, which works on the basis of the travel-time-difference principle. Additionally, a technique is presented whereby, on the basis of the results of measurement, also information is provided concerning change in some other system and/or process variable. To this end, the currently measured, actual measuring signals, or the corresponding actual measuring data, is compared with corresponding, stored set measuring signals, or set measuring data; a report is output, when a deviation arises between the set measuring signals, or set measuring data, and the actual measuring signals, or actual measuring data.

Abstract: An apparatus for the positioning of a clamp-on flow measuring device on a containment, which has a medium flowing through it. The apparatus includes at least two ultrasonic transducers, which emit measuring signals into the containment and/or receive measuring signals from the containment, a positioning unit for the variable positioning of the ultrasonic transducers on the containment, a control/evaluation unit, which calculates from predetermined process and/or system variables a characteristic, desired variable of the measuring signals and which determines on the basis of a comparison of the calculated, desired variable with the corresponding, measured, actual variable, whether the ultrasonic transducers are optimally positioned or whether the position of the ultrasonic transducers need to be changed, and an indicating unit, which indicates to operating personnel a required change of position and/or the direction in which a change of position needs to be made.

Abstract: A pulse generator including a control logic operating, by means of control pulses, a switch connected on the input side with a voltage supply unit and delivering a pulse voltage on the output side, there is connected, between control logic and the switch, a capacitor, which decreases the pulse voltage when the pulse frequencies are too low, and, additionally, arranged between voltage supply unit and switch, an RC-member, which decreases the pulse voltages when the repetition rates of the control pulses are too high, in order to enable use of the pulse generator in the Ex-area.