Ok I am pretty much done setting up my dust collection system and wanted to try and take some CFM measurements for my system. I watched alot of videos and was also able to borrow an anemometer over the weekend and did some readings. The anemometer even had a setting for CFM, However the problem I have now is that that the anemometer in CFM mode gave me a reading in thousands not the hundreds.

My system is completely made up of 4" PVC with minimum flex hose lengths (all less than 5').
So what do I need to do with this number to get my true CFM reading?