How to set the ozone production function of the J5000 ozone detector?

In the 3S-J5000 ozone detector, there is a function called ozone production calculation. However, this function needs to be set up to be used. How to set it up?

The ozone production formula includes the intake volume and ozone concentration. Just set the intake air flow rate in the ozone detector, and the detector will calculate the ozone output based on the real-time ozone concentration.