In order to get a proper CFM or CMH reading from my anemometer, what do I set the area to?

[TPCEA]

I've got an Aicevoos AS-H7 anemometer, which can measure velocity and flow, and has an area range of .001 to 9.999 m2 or ft2. I'm doing tests both in open air and a constrained area. For open air, if I use 9.999 I get incorrect readings. What should I use? Thanks!

I finally found the right setting by calibrating it with the A12x25. The closest setting in an unrestricted area is .011 m2.

 

[ShrimpBrime]

Good question! Can't even find a manual for this online, but looks like there's a couple videos on the product.

Might have to know the cfm potential of your fans and adjust the settings until it gets close to an accurate reading.

 

[TPCEA]

Good question! Can't even find a manual for this online, but looks like there's a couple videos on the product.

Might have to know the cfm potential of your fans and adjust the settings until it gets close to an accurate reading.

That is what I just did with the A12x25, and the closest I could get to its metric output (why does everyone use CFM???) is .011m2. Thanks for confirming my only theory.

 

[ShrimpBrime]

That is what I just did with the A12x25, and the closest I could get to its metric output (why does everyone use CFM???) is .011m2. Thanks for confirming my only theory.

CFM is pretty standard for fans I think. At least that's how furnace blowers are rated any how. And it's easy too. 12" x 12" squared pocket of air flowing by

 

[TPCEA]

CFM is pretty standard for fans I think. At least that's how furnace blowers are rated any how. And it's easy too. 12" x 12" squared pocket of air flowing by

Yes, that's true, but we usually use metric of static pressure.... Crazy humans!

 

[ShrimpBrime]

Yes, that's true, but we usually use metric of static pressure.... Crazy humans!

lol. Yeah, the diagnostics on the tractors use Barometric pressure sensors. The sensor reads inches of mercury while the diagnostics want to measure and compare the pounds per square inch. So of course, have to convert it.

There is no standardization for anything it seems.

Yes, crazy humans and their biochemical computational thinking.

 

[TPCEA]

lol. Yeah, the diagnostics on the tractors use Barometric pressure sensors. The sensor reads inches of mercury while the diagnostics want to measure and compare the pounds per square inch. So of course, have to convert it.

There is no standardization for anything it seems.

Yes, crazy humans and their biochemical computational thinking.

And here I was going to blame it on pollution.