COMET SYSTEM
, s.r.o., Bezrucova 2901
Specifications are subject to change without notice.
756 61 Roznov pod Radhostem, Czech Republic
ie-lgr-U8415-01
CO
2
monitor
U8415
DESCRIPTION AND USE
Battery powered device
U8415
with external power possibility is designed to indication of CO
2
concentration inside buildings (schools,
conference halls, hospitals, offices, cinemas, theaters,
…). The level of CO
2
concentration is indicated by the device using three colors (LED
diode in the upper left corner), changes in the indicated states are also signaled acoustically - by a beep. The signaling method can be set by
the user using the
software, see below for a description - section "
Setting of the device parameters
The device U8415 is equipped with a maintenance-free and long-term stable NDIR sensor with dual wavelength and multi-point calibration.
TECHNICAL PARAMETERS
1)
Settings can be changed using COMET Vision software
2)
Recommended interval under normal operating conditions
INSTALLATION AND USAGE OF THE DEVICE:
The device can be switched on/off manually by pressing the ON/OFF button on the device
or by using the
software. It is available free of charge at
https://www.cometsystem.com/products/comet-vision-analytical-software-for-
dataloggers-and-multiloggers/reg-cv
and can be used to device control and configuration.
After switching On
the device performs an initial test for approx. 20 s: if the internal
On/Off timer is NOT activated in the device configuration (default factory setting) a beep
sounds once. If
the internal On/Off Timer is configured to use
and the device follows
that time program
a beep sounds twice
. Subsequently, twice flashes all colors in order
green, orange, red, first slowly and secondly faster. Then 3s pause follows, then
for 3s
the
color that indicates the battery status lights
:
the battery
is charged
sufficiently
(more than 50%)
it is
advisable
to charge the
battery (20 - 50 %)
the battery
must be charged
(less than 20%), otherwise the battery may be
permanently damaged due to deep discharge.
The device is delivered from the manufacturer with a fully charged battery (part of the device).
DEVICE DIMENSIONS
OPTICAL AND ACOUSTIC SIGNALING
❖
LED flashing when the device is
switched Off and external power is connected (battery charging)
via the USB-C connector:
The battery is fully charged.
Finishing charging (charged more than 90%).
Full power charging is in progress.
The battery is too low (this may affect battery life), next time charge it earlier. Charging will take longer time.
The battery may be damaged or discharged too deeply. Leave the device under supervision connected to
an external power supply (charger), if the condition does not change after 2h, contact the supplier of the device.
Charging is temporarily suspended
due to low (below 0°C) or high (above 40°C) temperature of the device.
Charger reports an error, check the power adapter, or contact the supplier.
1 2 3 4 5 6 7 8 9 10 11
→
time t [s]
Power supply:
internal battery and external USB-C 5V/1A for
battery charging/power
CO
2
measurement interval:
15 s with external power supply,
2 min on battery power
1)
CO
2
concentration accuracy:
±
(50 ppm + 3 % from measured value)
Recommended calibration interval:
5 years
2)
CO
2
concentration measuring range:
0 to 5000 ppm
Operating temperature range:
-20 to
+60 °C
Operating humidity range:
5 to 95 %RH (no condensation)
Operating pressure range:
700 to 1100 hPa
Storage temperature:
-20 to
+60 °C
Storage humidity:
5 to 95 %RH (no condensation)
Storage pressure:
700 to 1100 hPa
Protection class:
IP 30
EMC:
EN 61326-1
Weight:
approx. 250 g
MOUNTING AND CONNECTION
The CO
2
monitor U8415 is equipped with
a pair of holes for screwing to the wall, its
mounting position is shown in the figure.
For device mounting it is possible to use
LP100 - lockable datalogger holder for
wall mounting, for magnetic surfaces
holder LP103, for easy installation self-
adhesive Dual lock MD036
–
all as
optional accessories.
Device is equipped with a rechargeable
battery - prevent it from being deeply
discharged, check its condition regularly
and charge it if necessary.
The device can be connected to external
power using the supplied power adapter
with a USB-C connector.
We recommend verifying the measurement
accuracy of the device by regular calibration.
