TESTO 400 Instruction Manual page 56

9 Operation
The turbulence probe requires a warm-up period of around 3 seconds
after connection to the testo 400. Carry out the measurement after this.
For unimpaired measurement, we recommend attaching the probe(s) to
a tripod. In combination with the testo tripod and the IAQ data logger,
up to 3 probes can be positioned at the relevant heights in accordance
with the standards.
The draught is measured at the level of thermally exposed areas such as the
head and ankles, as well as at the level of thermal centre of gravity, at
abdominal height. The measurement heights refer to the relevant measuring
points in accordance with the standards (EN 7726 and ASHRAE Standard 55),
depending on whether the person is standing or sitting.
1
Click on

Main menu opens
2
Click on Measure.
3 Click on Discomfort - draught

The Discomfort - draught rate measurement menu opens.
4
Click on

Configuration menu opens.
56
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rate.