Co2meter AZ-0004 Operation Manual

OPERATION MANUAL
Desktop CO2, Temperature &
Relative Humidity Monitor
CO2METER.COM
INTRODUCTION
Thank you for purchasing this desktop CO2
monitor. It measures carbon dioxide levels, air
temperature and humidity. This makes it ideal for
indoor air quality (IAQ) diagnosis and HVAC system
performance verification.
Poor indoor air quality is considered unhealthy. It
can lead to drowsiness, inability to concentrate,
and even illness (for example, Sick Building
Syndrome).
IAQ monitoring of CO2 levels is widely used in
public areas such as offices, classrooms, factories,
hospitals and hotels. It is also recommended for
industrial hygiene in some countries. (See
appendix).
Product Features:
● Large display shows CO2 level, temperature,
humidity, date and time
● 15 degree tilt angle makes the display easy
to see and read
● Indoor air quality level indication:
Good, Normal, and Poor
● Stable NDIR sensor for CO2 detection
● Visible and audible CO2 warning alarm
● ABC (Automatic Baseline Calibration)
or manual CO2 calibration
● Maximum or minimum CO2 level recall
function
MATERIALS SUPPLIED
This package contains:
● Meter
● Power Supply (5V +/‐ 10%, >= 0.5A)
● Manual
POWER SUPPLY
The meter is powered by an AC adaptor
(5V/0.5A output).
LCD DISPLAY
Symbols
ppm CO2 level in parts‐per‐million
GOOD CO2 is in good level
NORMAL CO2 is in normal level
POOR CO2 is in poor level
Air Temp. Air temperature
Humidity % Unit of air relative humidity
o
E (C/F) Celsius/Fahrenheit of temp.
MAX/MIN Maximum/Minimum readings
CO2 alarm icon
NOTE:
TWA / STEL / VENT.R / cfm/p / lps% icons
are not used for this model.
KEYPAD
SET ‐Enter setup mode
‐Save and finish settings
ESC‐Exit setup page / mode
‐Terminate CO2 calibration
Reset ‐ Clear MAX/MIN values
▲‐Select mode or increase value in setup
MIN/MAX▼ ‐Activate MAX, MIN function
‐Select mode or decrease value
during setup
SET+▲+MIN/MAX▼ ‐ CO2 calibration mode
OPERATION
POWER ON/OFF
Plug the wall adaptor into an appropriate
receptacle. The meter will turn on automatically
after a short beep. The lit LED indicates full power.
If the voltage is too high or low, "bAt" will display
on the LCD and the LED will flash. Please see page
14 for trouble shooting.
During normal operation, the LCD will display the
current CO2 level in ppm, air quality level, air
temperature, humidity, and the current date and
time (Fig.1).
TAKING MEASUREMENTS
The meter starts taking measurements
immediately after it is turned on and updates the
readings every second. In the event the operating
environment is quickly changed (for example, from
high to low temperature), it will take
approximately 2 minutes for the CO2 and
temperature to adjust and 10 minutes for humidity
to stabilize.
NOTE: Do not hold the meter close to your face as
your breath will affect the CO2 level.
MIN/MAX
While the meter is powered on, press the
"MIN/MAX▼" button to see the minimum and
maximum CO2 level, temperature, and humidity in
turn. Each press of "MIN/MAX▼" will display the
MIN and MAX values in order, then return the
meter to normal mode (Fig.2).
During normal operation or while viewing
MIN/MAX levels, press and hold the "RESET" key
for more than 1 second to clear the stored
minimum and maximum values.
ALARM
The meter features an audible alarm that warns
the user when the CO2 concentration exceeds the
programmed limit. Users can set 2 limits: a CO2
level that requires ventilation (See P1.
setting alarm limits) and a lower CO2 level when
ventilation is no longer required (See P1.
CO2 normal limit).
During high alarm, the meter emits an 80dB beep
and displays the fan icon on the LCD. The alarm
can be temporarily stopped by pressing any button,
or it will automatically stop when the CO2 level
falls below the lower limit.
If the alarm is temporarily silenced, it will resume
if the CO2 level fall below the lower limit then rises
above the upper limit again, or if the
"RESET" button is pressed to re‐activate the alarm.
1
HIGH CO2 ALARM
in setup for
3
in setup
2