METHOD TO MEASURE MEDIUM FLOW Russian patent published in 2014 - IPC G01F1/66 

FIELD: measurement equipment.

SUBSTANCE: method to measure medium flow, in which the main flow is summed with the back flow, the summary flow is sent via the main flow meter, measured, then divided into two flows, one of which is considered equal to the inlet one and is sent to the load, the other is considered the back flow, measured by its flow meter and subtracted from the summary flow. At the same time the entire range of measurement is divided into two parts - the first part of measurement with the back flow, the second part of measurement - without the back flow. In the first part of the range the back flow is forcedly sent to the main flow for summation, its value is changed inversely to the value of the main flow. In the second part of the range the flow rate of the main flow is measured by the main flow meter without the back flow. Besides, using the invention, they set the relation between the back flow and the main flow as proportionate and inverse.

EFFECT: increased range of flow measurement.

4 cl, 1 dwg