device with several one - and ausgaengen to production in zusammenfallender ausgangsimpulse's dependence of eingangsimpulsen

摘要

A device is described which will accept trains of pulse signals on inputs thereof and will provide corresponding trains of pulse signals on corresponding outputs such that the number of pulse signals in the train at any of these outputs is equal to the number of pulse signals on the train at the corresponding input and such that there is never coincidence of pulse signals on these outputs regardless of whether or not there is coincidence of pulse signals on the inputs. In application of the device to a blending system two pipe lines for fluids to be blended have respective pulse transducers connected to respective inputs of such a device. The transducer for the minor component of the blend provides its pulses via said device to a counter which on reaching a predetermined count corresponding to the volume of the minor component in a standard quantity of the desired blend produces a signal to close a valve in the minor component flow line. The pulses at both outputs of said device are counted together by a further counter which on reaching a count corresponding to said standard quantity re-sets the first mentioned counter causing said valve in the minor component flow line to open again.