DEVICE FOR MEASUREMENT OF LIQUID DENSITY Russian patent published in 2011 - IPC G01N9/26 

FIELD: machine building.

SUBSTANCE: device for measurement of liquid density consists of bubble sensor as complex of two tubes of different height. Also, the device has a master of air flow, two compensating vessels and a differential pressure gauge. The bubble tubes are removed from the compensating vessels. Lower parts of the vessels are directly connected with measuring chambers of the differential pressure gauge. Under pressure from the bubble tubes of the working sensor air is supplied to upper parts of the compensating vessels. Additionally, tubes connecting the compensating vessels with inlets to the measuring chambers of the differential pressure gauge are interconnected via an equalising valve.

EFFECT: raised reliability and time stability of density metre.

2 cl, 3 dwg