Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back About sharpness of input edge of diaphragm for gas flow measuring. Dayev Zh.A. This paper is dedicated to question about rounding of acute edge of diaphragm for gas flow measuring. Equation was received for rounding radius relatively to material hardness. Methods supposed for rounding effect decreasing by manufacturing converging equipment of hardener materials. Key words: gas flow measuring, converging equipment, rounding radius, material hardness. Контактный телефон: (347) 2420913.