46
Measurements
Temperature and humidity measurements are
automatically updated once a minute.
Measurement of TVOC and CO
2
values must be
started manually.
− To start the measurement process, press
and hold down the sensor eld
for
approx.3seconds. This triggers a ve-minute
countdown and air data analysis.
Pay attention to the following:
Frequent TVOC and CO
2
measurements
consume much battery power. If the
measurement display shows
, be sure
to change the batteries or connect the
device to a power supply using USB
connection (see also “Changing batteries”).
Operation of the device via USB connection
increases measurement accuracy.
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