METHOD FOR MARKING OUT SCALES OF ROTAMETERS EMPLOYED IN APPARATUSES FOR INHALATION ANESTHESIA Russian patent published in 1994 - IPC

FIELD: medical engineering. SUBSTANCE: this method of marking out scales of rotameters used in apparatuses designed for inhalation anesthesia prescribes determining position of float at extreme values of gas flow and flow rates corresponding to one and three thirds of rotameter measuring range, selecting nearest in length unified scale by referring to gas flow extreme value marks, positioning rotametric tube in such manner relative to unified scale that marks designating one and three thirds of rotameter measuring range will be located symmetrically with respect to corresponding unified scale graduations, and then transferring unified scale graduations to rotameter tube. EFFECT: higher accuracy. 4 cl, 2 dwg