Co2meter 7241870756793 Operation Manual - Page 3
Browse online or download pdf Operation Manual for Measuring Instruments Co2meter 7241870756793. Co2meter 7241870756793 4 pages. Desktop co2, temperature & relative humidity monitor
CO2 CALIBRATION
The meter is calibrated at 400 ppm (parts‐
per‐million) CO2 concentration at the factory. 400
ppm is comparable to fresh outdoor air.
There are 2 types of calibration available: ABC
(Automatic Baseline Calibration) or manual
calibration. One or the other should be used
regularly to maintain good accuracy.
Note:
If TIM10 accuracy becomes a concern after long
use or other special conditions, return the meter
to the dealer for calibration.
CAUTION:
Do not calibrate the meter with air or bottled gas
that contains an unknown CO2 level. The meter
will assume it is 400 ppm CO2 and will give
inaccurate measurements.
ABC Calibration
ABC (Automatic Baseline Calibration) is designed
to eliminate the zero drift over time of the infrared
CO2 sensor. The ABC function is enabled by default
from the factory.
For ABC to work properly, the meter must
continuously monitor CO2 levels for at least 7.5
days (power on). During that time, it will record
the lowest CO2 level and set that as the 400 ppm
baseline for future readings. Therefore, it is critical
when using ABC calibration that the meter be
exposed to fresh air at least once every 7.5 days. If
this is not possible, then manual calibration is
recommended.
Manual Calibration
Manual calibration requires fresh, dry outdoor air
when CO2 levels are approximately 400 ppm. Do
not calibrate during rainy days. High humidity will
affect the CO2 levels in air.
During manual calibration, avoid placing the meter
in areas crowded with people or close to
structures that might give off CO2 like air
ventilation pipes, chimneys, or automobiles.
To manually calibrate the meter, place it outdoors,
and turn it on for at least 2 minutes. Then hold
down "SET" ,"▲" and "MIN/MAX▼"
simultaneously more than 1 second to enter CO2
calibration mode (Fig.19). 400 ppm and
"CO2" will blink during calibration.
Wait about 30 minutes until the blinking stops.
Calibration is completed automatically. To stop
manual calibration, press "RESET" for at least 1
second.
Note:
Keep the meter away from any animals, humans or
plants which might affect the CO2 concentration
nearby during the calibration.
RH CALIBRATION
This humidity accuracy of this desktop CO2 meter
can be re‐calibrated.
Contact CO2Meter.com to purchase a calibration
kit with instructions.
SPECIFICATIONS
3
TROUBLESHOOTING
? Cannot power on
Check whether the adaptor has power and
that the meter is firmly plugged in.
? Slow response
Check that the air flow channels on
the rear of the meter are not blocked.
? No change in readings
Check whether the meter is in maximum
or minimum mode. Reset factory defaults.
? "BAt" and green LED keep flashing
The adaptor output voltage is too high or
too low. Use the supplied adaptor with
correct 5V (+10%) >=0.5A ratings.
? Error Codes