If I use a hood, then use a velometer, I get two different cfm values. I divide the grills up, and average the airflow but my measurements are different. I use the free area of the grill. DO you think maybe just not careful enough or is that normal please advise, also is a factor, hood reading divided by velocity reading?
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Thank you for posting this, was just dealing with airflow checks today!
Very interesting topic.
If I use a hood, then use a velometer, I get two different cfm values. I divide the grills up, and average the airflow but my measurements are different. I use the free area of the grill. DO you think maybe just not careful enough or is that normal please advise, also is a factor, hood reading divided by velocity reading?
Your last sentence is an incorrect, run-on sentence, and will most likely not ever receive an answer.
Please correct.
Thanks.
thank you for your good way
Does the Testo 310 have the ability to accurately measure static pressure in Ducts for determining cfm?
Are you serious?
@@ParabellumX Looking back at this comment, it must have been when I first started looking into these instruments.
@@dpeagles MUSTARD been! 😆
So, how far into HVAC did you end up getting into from the time you posted that comment to now?
I like plastic bag with timer, about all I can do after HVAC tech installed 3/4" suction line when my 4 ton AC system needs 7/8"