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Information × Registration Number 0309U007085, 0108U001595 , R & D reports Title Development, making and test of витратоміру of gas of the known composition on the basis of impulsive thermoanemometer with a thermistor pickoff. popup.stage_title Звітна документація: графіки рішень, принципові схеми, анотований звіт. Head Mykola I. Bolonov, Registration Date 17-02-2009 Organization Donetsk National University popup.description2 The cooling-down characteristics of sensing elements and complex sensors for determination of time constant and naturally working frequency of ther-moanemometer was obtained be manual way. The general schemes and algorithms of pulse thermoanemometers work was analysed. The periodical operating condition with useful signal obtaining in constant-current steady-state regime and cooling-down regime for sample rate 500 Hz was choosing. The schematic circuit of sensor unit basing on microprocessor ADUC834BS was developed. The standard models was made and cooling-down experimental characteristics for different gas velocities and temperatures was obtained. The complex sensor heat emission in gas flow mathematical model was formulated and particilar solution was obtained. The boundary conditions determines by solution of flow task in fenlab. The criterial dependences on velocity and temperature interpolation functions for time constant optimization program was developed. Product Description popup.authors popup.nrat_date 2020-04-02 Close