OZONE GENERATING APPARATUS

摘要

An ozone generating apparatus for ozone meter correction is provided to recognize the time of correction of the ultra-violet lamp automatically and thus to carry out the correction easily in the allowable uncertainty range. An ozone generating apparatus for ozone meter correction includes a chamber with an air inlet port and an ozone outlet; an ultra-violet lamp(10) which is installed within the chamber and emits the ultraviolet ray for ozone generation; a photo tube(20) which is installed within the chamber and measures the light intensity of the ultra-violet lamp; a timer(30) measuring the accumulated lighting time and the lighting time after and correction of the ultra-violet lamp; a memory(40) of storing a predicted light intensity estimate according to the accumulated lighting time of the ultra-violet lamp, an allowable uncertainty(Deltamax) which is determined so that the difference between the ozone generation amount by the ultra-violet lamp and the predicted ozone generation amount according to the accumulated lighting time of the ultra-violet lamp is less than the maximum allowable value, the accumulated lighting time and the lighting time after correction; a microcomputer(50) which calculates the light intensity error(epsilon) from the predicted light intensity corresponding to the accumulated lighting time and the measured light intensity difference, and calculates the residual correction time(Tcal) which is determined by multiplying the prior correction period(To) by the ratio between the allowable uncertainty(Deltamax) and the light intensity error(epsilon); and a display unit(60) indicating the calculated residual correction time(Tcal).