Abstract: A measuring device for determining the filling level of a filling material in a container is simple and inexpensive to produce and allows largely continuous determination of the filling level of an unknown filling material in a container. The measuring device has at least three measuring sensors in mutually spaced relationship in a heightwise direction. A read-out device having at least three measuring inputs for reading out the measuring sensor signals is provided. Each measuring sensor signal depends on material properties of a filling material arranged adjacent to the respective measuring sensor. A calibration device which effects calculation of the filling level detected by a measuring sensor positioned neither right at the top nor right at the bottom in the heightwise direction, on the basis of the measuring sensor signal of the further upwardly arranged measuring sensor and/or the further downwardly arranged measuring sensor.

Abstract: The present invention concerns a measuring device for determining the filling level of a filling material in a container.

Abstract: A displacement pump includes a delivery chamber, connected to a pressure connection and a suction connection. A displacement element determines the volume of the delivery chamber and can be moved back and forth between a first position, in which the delivery chamber has a smaller volume, and a second position, in which the delivery chamber has a larger volume. The pressure connection is connected to the delivery chamber by a pressure valve and the suction connection is connected to the delivery chamber by a suction valve. The displacement pump is easy and economical to produce and simultaneously reliably provides a degassing function, whereby downtimes can be reduced and the reliability of the delivery process can be increased. With the pressure valve closed, a backflow channel connects the delivery chamber and pressure connection, through which medium can enter the delivery chamber and/or gas can escape from the delivery chamber.

Abstract: The present invention concerns a method of operating at least one metering device. To provide a method of operating metering devices, which can be flexibly adapted, it is proposed according to the invention that the method has the steps of providing a server, providing at least one metering device, providing a closed-loop control device, transmitting data, providing a case database, calculating improved further operating data and providing the improved further operating data for the control device.

Abstract: The present invention concerns a metering device having a metering chamber in which a displacement element is arrange moveably in such a way that it is reciprocable between two positions, wherein the volume of the metering chamber in the one position is greater than in the other position. The metering device further has an actuator for driving the displacement element, which has an actuator input for an electrical actuation signal and is so constructed that an electrical actuation signal at the actuator input is converted into a mechanical movement. In addition the metering device has a sensor for detecting a physical or chemical measurement value, which has a sensor output for an electrical measurement signal and is so adapted that it detects the physical or chemical measurement value, converts it into an electrical measurement signal and makes same available at the sensor output.

Abstract: The present invention relates to a metering system for metering a liquid metering medium, with a suction line, which is filled with a metering medium at the liquid pressure ps, and a pressure line, which is filled with the metering medium at the liquid pressure wherein the suction line is connected to the pressure line by a metering member configured as a metering pump, with which metering medium can be conveyed from the suction line into the pressure line, wherein the metering pump has a conveying chamber, the volume of which can be changed with the aid of a movable displacement element in such a way that, in a first position of the displacement element, the conveying chamber has a minimum volume Vmin and, in a second position of the displacement element, the conveying chamber has a maximum volume Vmax, the conveying chamber being connected by a pressure valve to the pressure line and by a suction valve to the suction line, so, by an oscillating movement of the displacement element, metering medium can alter

Abstract: The present invention relates to a metering system for metering a liquid metering medium, with a suction line, which is filled with a metering medium at the liquid pressure ps, and a pressure line, which is filled with the metering medium at the liquid pressure wherein the suction line is connected to the pressure line by a metering member configured as a metering pump, with which metering medium can be conveyed from the suction line into the pressure line, wherein the metering pump has a conveying chamber, the volume of which can be changed with the aid of a movable displacement element in such a way that, in a first position of the displacement element, the conveying chamber has a minimum volume Vmin and, in a second position of the displacement element, the conveying chamber has a maximum volume Vmax, the conveying chamber being connected by a pressure valve to the pressure line and by a suction valve to the suction line, so, by an oscillating movement of the displacement element, metering medium can alter

Abstract: The present invention concerns a method of sensorless detection of functional disturbances of a positive displacement pump (1), wherein the positive displacement pump (1) has a moveable positive displacement element (5) having a boundary surface (AG) which delimits a metering chamber (3), wherein the metering chamber (3) is connected to a suction and a pressure line (6, 7) by way of valves (8, 9) so that fluid (F) to be conveyed can alternately be sucked into the metering chamber (3) by way of the suction line (6) and pressed out of the metering chamber (3) by way of the pressure line (7) by an oscillating movement of the positive displacement element (5) and wherein there is provided a stepping motor (13) as a drive for the oscillating movement of the positive displacement element (5).

Abstract: The present invention relates to a displacement pump with a delivery chamber, which is connected to a pressure connection and a suction connection, a displacement element determining the volume of the delivery chamber, said displacement element being able to be moved back and forth between a first position, in which the delivery chamber has a smaller volume, and a second position, in which the delivery chamber has a larger volume, wherein the pressure connection is connected to the delivery chamber by a pressure valve and the suction connection is connected to the delivery chamber by a suction valve.