Comet U0110, User Manual

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20
IE-LGR-Uxxxx-16
Compact pressure gauge with
external CO
2
probe
This model allows to measure the barometric pressure
by the internal sensor and concentration of CO
2
in the air by the external probe. Barometric pressure can
be measured as absolute or recalculated to sea level.
Accupack in the device can be charged. 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 COMET Vision software).
U3120
Compact thermometer -
hygrometer
This model is designed to measure temperature, relative
humidity and dew-point temperature by internal sensor,
no additional probes or sensors can be connected.
It is characterized by a simple and compact design
and a relatively long response to a temperature
and humidity change, compare to model with external
probes. The sensors are located under the grid
on the front of the device. 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. If water vapour
condensation occurs inside the datalogger, then
the resulting water will remain there and may damage its
electronics. The device is placed directly in the measured
area. The battery in the device cannot be charged.
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.
U2422