METRIFUL MD-21 Manuale utente
METRIFUL
MD-21
EN CO2MONITOR USER MANUAL......................................................3
FR MANUEL D’UTILISATION – DÉTECTEUR DE CO2.........22
EN •CONTENTS
INTRODUCTION.................................................................................................4
PARTS LIST........................................................................................................4
SAFETY INFORMATION....................................................................................5
PRODUCT DIAGRAM........................................................................................6
BEFORE USING THE MONITOR......................................................................7
Assembly and setup.....................................................................................7
Positioning tips..............................................................................................7
USING THE MONITOR.......................................................................................8
Reading the display......................................................................................8
Using the buttons..........................................................................................8
Display symbols............................................................................................9
Dimming the screen......................................................................................9
Air quality indicator light.............................................................................10
Alarm function.............................................................................................10
Muting the alarm sound..............................................................................11
Power on / off..............................................................................................11
MONITOR SETTINGS......................................................................................11
Set the time and date.................................................................................13
Change the “Do Not Disturb” period..........................................................13
Change the CO2alert levels.......................................................................14
MONITOR CALIBRATION................................................................................15
Manual calibration procedure.....................................................................16
TROUBLESHOOTING......................................................................................17
INFORMATION ABOUT CO2............................................................................18
SPECIFICATIONS............................................................................................19
PRODUCT GUARANTEE................................................................................20
DISPOSAL........................................................................................................20
PRECAUTIONS AND MAINTENANCE...........................................................21
CONTACT INFORMATION...............................................................................21
EN 3
INTRODUCTION
Thank you for purchasing the Metriful MD-21 carbon dioxide monitor.
Use the MD-21 to assess ventilation effectiveness in your home, office or
classroom.
Better ventilation helps to reduce the risk of CO2discomfort and virus
transmission.
The MD-21 provides:
•Accurate measurements of indoor CO2at concentrations up to
5000ppm
•A colour-coded air quality indicator light
•An alarm to warn you of high CO2levels
•Manual and automatic calibration for best performance
This guide contains important safety and operating instructions. Please
read it before using the product, and retain it for future reference.
PARTS LIST
The following items are included in the package:
•Carbon dioxide monitor
•Micro USB charging cable
•Stand
•User manuals (English, German, French, Dutch)
A standard USB power source with type-A socket is also required (not
included).
EN 4
SAFETY INFORMATION
WARNING: This product is intended for use in ordinary indoor
residential areas only. It is not designed to detect asphyxiation risks
from carbon dioxide (CO2) or any other gas.
•DO NOT use this product in situations where its failure could cause
injury or death.
•DO NOT use this product in commercial or industrial applications.
WARNING: This product is not a carbon monoxide (CO) detector
and will not sense carbon monoxide, a poisonous gas.
WARNING: This product contains a lithium battery. Improper use of
lithium batteries can cause fire or explosion.
•DO NOT burn or dispose of the product in a fire.
•DO NOT crush, cut, disassemble or modify the product.
•DO NOT expose to temperatures above 40°C or below 5°C.
•DO NOT insert or allow foreign objects to enter the vent openings.
•DO NOT connect the product to unapproved or non-compliant
power sources.
WARNING: This product is not designed for use by children or
persons with reduced physical, sensory or mental capabilities
•ALWAYS keep this product out of the reach of children.
EN 5
PRODUCT DIAGRAM
EN 6
Side view
Front view
Button 3
increase / right
Air quality
indicator
Button 4
enter / dim / power
Display area
Button 1
back / mute
Button 2
decrease / left
Air vent
Stand
Micro USB
socket
BEFORE USING THE MONITOR
Assembly and setup
1. Insert the stand into the two holes on the back of the monitor. Slide
the stand upwards to lock it in place.
2. Unfold and straighten the USB cable. Insert the micro USB plug into
the USB socket of the monitor.
3. Insert the USB-A plug into a compatible USB power supply (not
included) and arrange the cable to avoid causing a trip hazard.
4. Start the monitor by pressing and holding button 4 for five seconds,
until the display illuminates.
5. Set the time and date – go to page 13: Set the time and date.
6. Calibrate the monitor – go to page 16: Manual calibration procedure.
Positioning tips
•Position the monitor on a stable, level surface such as a table or
desk.
•Bend the USB cable to assist positioning of the monitor. Avoid
twisting the cable.
•Place at least two metres from windows, doors and air vents.
•Place at least two metres from people to avoid directly sensing
exhaled breath.
•Keep the monitor away from direct sunlight and out of the reach of
children.
•Use one monitor per room, or one for every 120 m2of floor area in
larger rooms.
EN 7
USING THE MONITOR
Reading the display
The monitor automatically measures CO2every five seconds. The
measured CO2concentration, time and date are displayed on the screen
in two information display pages.
Press the +and −buttons to move between the two information display
pages.
Using the buttons
The monitor has four control buttons which operate by capacitive touch
sensing. Press the buttons gently with the widest part of your fingertip.
EN 8
Time
CO2
reading
Date
(MM-DD)
CO2display page Time and date
display page
Display symbols
CO2Carbon dioxide MAX The MAX CO2threshold level
Settings mode MIN The MIN CO2threshold level
Time, or time and date “Do Not Disturb” settings
Alarm sound is muted Battery state indicator:
PPM
CO2concentration in
parts per million (number
of CO2molecules per
million molecules of air)
Green 60% - 100%
Y
el
l
ow
20%
-
6
0%
R
ed
0%
-
2
0%
Flashing USB charging
Dimming the screen
Briefly press button 4 to dim the screen.
➔All lights are disabled except for the air quality indicator, which flashes
once every five seconds.
Press any button to restore the display.
The screen dims automatically after one minute when not on USB power,
and during the daily “Do Not Disturb” period.
EN 9
Air quality indicator light
The light colour provides a simple and intuitive alert system.
Air quality
indicator
colour
State Interpretation CO2
concentration*
Green Good CO2level is
acceptable
Less than
800ppm
Yellow Intermediate
Take action now.
Ventilate the room or
reduce occupancy
800 – 1200 ppm
Red Bad
Ventilate urgently.
Leave the area if
possible
More than
1200 ppm
*Values can be changed – go to page 14: Change the CO2alert levels.
Alarm function
The alarm triggers when the air quality changes from good or
intermediate to bad.
➔The monitor sounds an alarm tone for 30 seconds.
➔The displayed values flash for 30 seconds, even if previously
dimmed.
If the air quality changes from good to intermediate, the values flash for
30 seconds without sound.
EN 10
Indice
Lingue:
