Air flow calculation

Since the different manufacturers have different ways of documenting their k factor and do the air flow calculations, the macro offers different calculation options.

Depending on the parameters AFL-05 (calculation option) and AFL-06 (density compensation) the formulas to calculate the air flow are shown in the next table:


calculation option
AFL-05

density compensation

AFL-06

air flow calculation formula in m3/h

0

0

1

1

0

1


In the formulas above:


The output of the table above are scaled in cubic meter / hour will be displayed at the output "CalcAirFlow_m3ph".

The output"CalcAirFlow_lps" displays the same calculated flow but scaled in liter / second applying the fixed multiplier 1/3,6 ( 1m3/h = 1000/3600 l/s).


Description

Range

Default

AFL-04: k scaling factor calculated air flow

1...10000

10

AFL-05: air flow calculation option

0 = formula 1

1 = formula 2

0/ 1

0

AFL-06: air density compensation active:

0 = no

1 = yes

0/ 1

0