22
SYSTEM
Weight
3.1 kg (6.8 lb)
Display
64 × 128 graphical
Operating Temperature
Minimum 4 °C
Typical NA
Maximum 50 °C
Operating Environment
0%–90% noncondensing
Data Communications
USB A and RS-232 serial
9,600–115,000 baud
Power
110–220 VAC
50/60 Hz
COMPLIANCE
Manufactured under ISO 9001:2015
EM ISO/IEC 17050:2010 (CE Mark)
3.2 COMPONENTS
The AQUALAB uses the chilled-mirror dew point technique to measure the water activity of
a sample. In an instrument that uses the dew point technique, the sample is equilibrated
with the headspace of a sealed chamber that contains a mirror and a means of detecting
condensation on the mirror. At equilibrium, the relative humidity of the air in the chamber is
the same as the water activity of the sample.
The AQUALAB DUO models make it possible to determine both moisture content and water
activity with one machine. For information about upgrading an AQUALAB 4TE or 4TEV to a
DUO, contact Customer Support.
The AQUALAB main components include the display screen and sample chamber (Figure30).
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