3 Tips for Adjusting Concentration in Ozone Aging Test Chamber

In the process of using the ozone aging test chamber, it is indispensable to adjust the concentration and airflow, so how should we adjust?

 

1. The ozone aging test chamber can be adjusted by automatically adjusting the ozone concentration.

When using an ultraviolet light source, the ozone concentration can be adjusted by adjusting the voltage added to the lamp 7, gas flow or shielding the lamp exposed to flowing air; when using a silent discharge tube, the ozone concentration can be adjusted by adjusting the voltage added to the generator , electrode size, oxygen flow or reduced air flow to adjust.

2. The ozone concentration shall be kept within the tolerance range of the concentration specified in 8.1.

When opening the test box to put people or inspect the sample, the ozone concentration should be restored to the concentration specified in the test within 30 minutes. The ozone concentration shall in no case exceed the concentration specified in the test. Equipped with equipment that can adjust the average speed of ozonated air not less than 8mm/s/s to adjust the average speed of ozonated air. The ozonated air flow rate can be calculated by removing the gas flow rate measured in the box. During the comparative test, the change in flow rate shall not exceed ±10%.

 

3. The gas flow rate is the volume of ozonated air that passes through in unit time.

In order to prevent the ozone concentration in the ozone aging test chamber from naturally decreasing through the dry ozone sample, the gas flow rate should be large enough. The rate of ozone depletion varies with test details such as rubber, test conditions, etc. It is generally recommended that the ratio of sample exposed area to airflow rate does not exceed 12 s/m, but this value is not always low enough. When in doubt, the depletion effect must be verified by testing and, if necessary, the surface area of ​​the sample can be reduced. Mixing with the tank gas can be accelerated using a diffuser membrane or equivalent device. If a high-speed flow rate is required, a fan can be placed in the box to increase the ozonated air flow rate to 600mm/s±100mm/s.

 

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