초록 ▼

Analogue measuring value signals, generated in a throughflow measuring device, are infed to a computer by means of an analogue-digital converter. The computer adds the received digital signals and produces at regular time intervals, for instance every three seconds, an output signal corresponding to

Analogue measuring value signals, generated in a throughflow measuring device, are infed to a computer by means of an analogue-digital converter. The computer adds the received digital signals and produces at regular time intervals, for instance every three seconds, an output signal corresponding to the total conveyed quantity. This output signal serves to control a display device and a printer. In the display device there is displayed the total quantity of the conveyed material during a certain time span. On the other hand, the computer forms a mean or average value signal from digital signals received within a predetermined time span, for instance likewise every three seconds. This mean value signal is characteristic for the momentary throughflow of the material during this time period. This mean or average value signal likewise serves to control the display device and the printer. In the display device there is thus also displayed the momentary throughflow quantity. Due to this processing of the measuring value signals by the computer it is also possible to obtain a correct determination of the conveyed quantity of material even if the conveyed material or medium flows through the pipe conduit or line with markedly fluctuating throughflow velocity.

대표청구항 ▼

An apparatus for determining the rate of flow of a medium conveyed with varying velocity through at least one pipe conduit by means of a pump device, comprising: a flow rate measuring device arranged in the pipe conduit and generating measuring value signals corresponding to the rate of flow of the

An apparatus for determining the rate of flow of a medium conveyed with varying velocity through at least one pipe conduit by means of a pump device, comprising: a flow rate measuring device arranged in the pipe conduit and generating measuring value signals corresponding to the rate of flow of the medium through the pipe conduit; an evaluation device connected to the flow rate measuring device for processing the measuring value signals; and means for the indication of the quantity of medium conveyed through the pipe conduit both as a function of time and the total quantity of medium; said evaluation device containing a computer for adding the received measuring value signals and generating at certain time intervals, based upon the addition of such received measuring value signals, first output signals corresponding to the total quantity of conveyed medium and generating in each of successive time periods second output signals by forming a mean value based upon the measuring value signals received during a given time period; said second output signals being characteristic of the momentary rate of flow of the medium during said given time period; and said first and second output signals serving to control said indication means.