GAS METER Russian patent published in 2002 - IPC

FIELD: measurement facilities; flowmeters. SUBSTANCE: proposed gas meter has hermetically sealed body 1 with inlet connection 2 and outlet connection 3, and mechanical counter 13. Hermetically sealed body is divided by flexible diaphragm 4 into liquid-filled part 5 and gas part 6 which serves as expansion chamber. Flexible diaphragm 4 has connection 7. Flexible gas channel 9 is arranged in liquid-filled part 5 of body. Gas channel 9 communicates inlet connection 2 with connection 7 of flexible diaphragm 4 and serves as hydraulic lock. Connection of flexible diaphragm 4 communicates also with expansion chamber 6 and it is provided with rod 12 for acting onto mechanical counter 13 and on contacts 14 of relay of electronic meter. EFFECT: improved accuracy and reliability. 1 dwg