Air flow measuring tubes

Air flow measuring tubes are placed in the ventilation ducts in accordance with the instructions. The standard air flow from the cooker hood is measured past the damper. The fan curves indicate the total pressure accounted for by duct losses.

Figure 1. Air flow measuring tubes (left) and (right)

Air flow measuring tubes - description of the diagram

A
Supply air
B
Extract air
C
Removing the cooker hood
D
E