초록 ▼

The flow rate of liquid being fed to a point of use is continuously monitored as is the liquid level in the feed tank by detecting the level in a liquid gauge member at two successive locations while feed from the tank is blocked, so that such detected data can be employed in a computer to output th

The flow rate of liquid being fed to a point of use is continuously monitored as is the liquid level in the feed tank by detecting the level in a liquid gauge member at two successive locations while feed from the tank is blocked, so that such detected data can be employed in a computer to output the flow rate and tank level.

대표청구항 ▼

In a liquid feed system wherein liquid is withdrawn through an outlet at the bottom of a feed tank with a pump having an inlet which delivers the liquid to a use point and a constant cross-section liquid gauge member communicates with the interior of the tank such that a column of liquid is present

In a liquid feed system wherein liquid is withdrawn through an outlet at the bottom of a feed tank with a pump having an inlet which delivers the liquid to a use point and a constant cross-section liquid gauge member communicates with the interior of the tank such that a column of liquid is present in said gauge member to the same level as that in the tank, the gauge member further being in communication with the inlet of said pump, a method for checking the rate at which the pump is delivering liquid to the point of use, said method comprising blocking the tank outlet at time T0 so that the pump withdraws liquid only from the gauge member thereby reducing the level in the gauge member, detecting the level of liquid in the gauge member at first and second reduced levels thereof and converting these detections to electrical signals indicative of times T1, and T2, processing the time T1 and T2 electrical signals in a computer to provide the flow rate in said gauge member as a processed signal output indicative of the pump delivery flow rate to the point of use, and further processing the flow rate, the T1 electrical signal and data representative of time T0 to compute the height of the level of the liquid column in the gauge member at time T0.