Do you think that if a tech already has a mini vane anemometer that he would need one of the large vane ones as well to be fully equipped? What can this do better than the mini vane and vice versa? Thank you
The mini-vane (like the testo 416) is primarily designed for in-duct use. The large vane (testo 417) is for supplies and returns. Two different functions, two different meters.
No open area factor needed on return. K factor is a confusing term that dates back many years and is not used any more. Even though we still hear about it.
This video was made in 2008 can we get a 2019 video. Thank you.
Do you think that if a tech already has a mini vane anemometer that he would need one of the large vane ones as well to be fully equipped? What can this do better than the mini vane and vice versa? Thank you
The mini-vane (like the testo 416) is primarily designed for in-duct use. The large vane (testo 417) is for supplies and returns. Two different functions, two different meters.
Your actually 1.5 inches shorter on width due to the flat bars going vertical on the grill. May or may not be a concern.
That's a good point.
You didn't mention using the K factor to account for the free area of the grille. How critical is that?
No open area factor needed on return. K factor is a confusing term that dates back many years and is not used any more. Even though we still hear about it.
@@TruTechTools I still hear people talking about it...don't you need to figure out a supply diffuser's k-factor before measuring the cfm's?
Calculation of aerodynamics on android: www.softhvac.com/hvac-calculator-for-android