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Datametrics 100 VT airflow meter

egansen Member Posts: 26
edited February 12 in THE MAIN WALL
I picked up this Datametrics 100 VT airflow meter at an auction.  Unfortunately it did not have the instructions with it.  I did a Google search and came up empty handed.  Could someone help me out with a quick guide??  I know it needs a new battery because it won't hold a charge.  It does not appear to work when I hold it over a floor register but I think it may be due to the low battery voltage.  It will read the temp when that is selected.  I do realize that this an old piece of equipment but thought it would be fun to play with if I can get it to work. Thanks!!


  • ratio
    ratio Member Posts: 2,794
    Looks pretty simple. Set the scale, hold the button in the ON position, read velocity or temperature on the respective scale.

    Now, getting to volume, that's a different question. You'll have to math it up with the reading you just took, the cross section area of the duct or air device, and K factor of the air device. Volume through a duct is similar, but you take many more readings & average them. The internets knows how to do it, search for 'calculate volume through a duct' or something like that.

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