English to Russian Tech/Engineering Metrology flow meters

‘Standing start and stop’ is the simplest method available and can be used for both high and low accuracy calibrations. The flow system is filled, all air purged and the required flowrate established. The flow is then stopped using a quick- response valve. When the container is empty, the drain valve is closed, the flow started, and when the container is full, the flow is stopped. The quantity collected is measured and compared with the meter reading, and combined with the time to fill, to give the flow rate.

http://www.controlengeurope.com/article/56532/Calibration-of...