METHOD DETERMINING CONCENTRATION OF CARBON DIOXIDE IN BOTTLES WITH AERATED DRINKS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 1997 - IPC

FIELD: food industry. SUBSTANCE: method is used as means of contactless technological control of production of aerated drinks and for determination of their correspondence to existing standards during their storage. Method involves measurement of balanced concentration of carbon dioxide in gas phase with the aid of infrared analyzer. Measurement of balanced concentration of carbon dioxide in gas phase is carried out directly in bottle when measuring optical absorption of infrared radiation at wave length 1.97 and 2.03 mkm. Device for implementation of method has source of infrared radiation, interference filter, infrared radiation detector and signal processing unit. Radiation detector is photoresistor. Wedge-shaped interference filter is provided with electric motor for its rotation. EFFECT: improved functional reliability of method and device. 2 cl, 2 dwg