CO2/CH4 Sampling Data Logger User’s Manual
21 April 2015
PAGE
14
of
19
Figure
8:
Sampling
calibration
screen
for
50%
CO2,
100%
CH4
Calibration can be performed using either 0% calibration gas (typically nitrogen, Argon, etc.), or
using a fresh source of air, assumed to be approximately 400ppm CO2 and 0% CH4. Attach the
calibration gas to the meter and connecting the meter to a computer. Open the calibration screen in
the GasLab
®
software. Click the
CALIBRATE
button in the calibration tab for the desired gas,
located in the
CONFIGURE
SENSOR
screen. As long as the gas concentration is stable, the unit
should instantly reflect the calibrated value. This can be confirmed by watching the LCD display on
the unit. To see the calibration value in real time, click in the
COLLECT
REAL
TIME
button to
capture these values before opening the configuration screen.
Figure
9:
Collecting
data
in
real
time
