I picked up an anemometer for fun. I wanted to check it was functional, so using one of my Royal uprights - an 886 - I unplugged the bag and measured cfm out. First,let me say this was not done with the utmost precision, the vane type sensor was simply placed over the orifice and the orifice area used as the multiplier. 0.025 I think. No "cone" was used to adapt one diameter to the other, this is simply a "does this work" exercise. The measured cfm was insane - around 200cfm. So now, I'm thinking "this thing is garbage".
Royals have a short steel tube adapter for the hose, so I fitted this and measured input cfm, again no real effort was made for accuracy, sensor simply placed over the metal tube orifice - this time around 100cfm. Much more believable.
How can cfm in not equal cfm out?
Royals have a short steel tube adapter for the hose, so I fitted this and measured input cfm, again no real effort was made for accuracy, sensor simply placed over the metal tube orifice - this time around 100cfm. Much more believable.
How can cfm in not equal cfm out?
