Comet U0110G, User Manual

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IE-LGR-UxxxxM-23
U4440M, U4440G
Compact thermometer -
hygrometer -
pressure gauge - CO
2
concentration meter
This model is designed to measure temperature,
relative humidity, dew-point temperature, barometric
pressure and
the concentration of CO
2
in the air by
internal sensors. Barometric pressure can be measured
as absolute or recalculated to sea level. No
additional
probes or sensors can be connected. It is characterized
by a simple and compact design and a relatively long
response in the measured quantities, compare to model
with external probes. The sensors are located under
the grid on the front and side of the unit The device is
suitable for measuring in places where there is no rapid
change in temperature or relative humidity, and there is
no condensation of water vapours. The device is placed
directly in the measured area, while the installation
needs to ensure sufficient level of GSM signal
at the installation location. As the internal battery
creates a parasitic heat during the charging period,
the measurement accuracy may be affected by up to
1
ºC.
In battery mode, this model has significantly shorter
battery life than models without CO
2
concentration
measurement. For this reason, the measurement of CO
2
concentration does not occur as often as
the measurement of other variables. By default, this is 2
minutes with the option of extending up to 10 minutes
(option available in the Vision software).
We recommend calibrating the relative humidity
and temperature of this device in the laboratory with
a sufficient air flow (at least 1 m / s), the reading can be
performed only after thorough settling, which can take up
to 4 hours.
The device has not a protection against the ingress of
water or dust. Do not use device at places where such
conditions can be expected.