TESTO 400 Instruction Manual page 41

1
Click on .

Main menu opens
2
Click on Measure.
3 Click on Volume flow rate - grid measurement as per ASHRAE

The Volume flow rate - grid measurement as per ASHRAE 111
measurement menu opens.
4
Click on .

Configuration menu opens.
5 Make the required settings and click
on Next.
For volume flow measurement as per the ASHRAE 111 standard, it is
necessary for the measurement to be carried out at different measuring
points. The number of measuring points depends on the distance from
the point of discontinuity and irregularities in the profile. In contrast to
standard EN 12599, the measurement must be carried out on at least 5
inspection holes (drilled holes) and at 5 measuring points in each case.
6 Configure the measuring interval for each measuring point in the duct.
9 Operation
111.
41