3
blinking on the display (Fig.16). Press “
▲”
or ”
MIN/MAX
▼
” to change to “Yes”, then press
“
SET
“ to save the setting. Press “
ESC
” to return
to P4.
0
C without saving.
If you choose “Yes”, the meter is reset to the
following factory defaults:
P5.
0
SET SAMPLING RATE
Go into P5.0 to set the data logging sampling
rate (Fig.17). The range is from 1 second to 4
hours 59 minutes and 59 seconds.
Press “SET” to see P5.1 blinking hour digits on
the lower left display . To change the digit, press
“
▲
“ or “
MIN/MAX
▼
“ to adjust the hour
sampling rate. Press “
SET
“ to save the setting.
After the hours are set, you will see P5.2 and
the minutes digits will flash. To change the
digits, press “
▲
“ or “
MIN/MAX
▼
“ Press “
SET
“ to
save the setting and go to P5.3.
After the minutes are set, you will see P5.3 and
the seconds digits will flash (Fig.18). To change
the digits, press “
▲
“ or “
MIN/MAX
▼
“ Press
“
SET
“ to save the setting and return to P5.0.
Press “ESC“ at any time to exit without saving
your last changes and return to P5.0.
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. 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 is set at the factory, and cannot be re‐
calibrated.
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
SPECIFICATIONS
SUPPORT & WARRANTY
