FIELD: technology for maintaining pressure of liquid within certain volume 3 and simultaneous registration of liquid flowing out of this volume as a result of leak or consumption.
SUBSTANCE: liquid is fed from valve 20, meant for adjusting pressure, provided with means 5-7,22-26, which are opened for feeding liquid into volume 3, when pressure therein drops below first value P1, and which stop liquid influx when pressure in volume 3 reaches predetermined second value P2, which is substantially higher than first pressure value P1. after each opening of adjusting valve 20 at its output clearly visible pressure increase occurs. This pressure increase is registered as pressure pulse, while frequency of formed pressure pulses is controlled and utilized as a measure of present leaks and/or consumption of fed liquid.
EFFECT: simple enough continuous control of pressure and its adjustment.
2 cl, 4 dwg
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