Quote Originally Posted by Carl Kona View Post
Rod,

I am confused. I understand that 1.8" is what is measured at that CFM but isn't that the pressure drop of the cyclone? Why wouldn't they measure at 1" or 1/2" and get a higher CFM to advertise? I have some Dwyer equipment and following their instructions I attach a 6"x60" duct to the 6" inlet of my cyclone and measure velocity and static pressure. So when I measure 2" of pressure with only this test duct connected, isn't that pressure drop across the cyclone? If I eliminated the cyclone and just attached the duct to the blower wouldn't the measured pressure be that of the duct and be much lower?


Carl
No, that's the pressure drop of your test duct.

The curves that the cyclone manufacturer gave you are for the inlet of the cyclone. You don't have to worry about the cyclone of filter drop, only what you connect to the inlet of the cyclone...........regards, Rod.