Method of measuring and controlling ozone concentration

Details Method of measuring and controlling ozone concentration Method of measuring and controlling ozone concentration

1989-02-24

1991-01-08

Hill, Jr., Robert J.

Chemistry: analytical and immunological testing

Condition responsive control

436138, 436171, 436135, 436175, 436 73, 436 83, 36457101, 36457102, 36457105, 364496, 364497, 364498, 738656, G01N 1700, G01N 2100

Patent

active

049835262

ABSTRACT:
A method of measuring or controlling ozone concentration by ultraviolet ray absorptiometry, includes charging air into a testing tank with its temperature controlled, measuring the disturbing gases generated from testpieces such as rubber samples inside the testing tank by regarding them as ozone, subtracting a value representative of the disturbing gases with a calculation circuit from a value indicative of the preexisting state in the tank to set the ozone concentration at zero, generating a necessary quantity of ozone with an ozonizer by using the zero ozone concentration as a reference point, suspending the generation of ozone after the passage of a predetermined time, measuring once again to obtain a new ozone concentration zero value, adjusting the ozone concentration zero value to the new value if there has been a change in the amount of disturbing gases generated, and repeating at least once the operation described above to regulate the ozone concentration to a desired ozone concentration.

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