NDTUM-GTAG-EN REV2.0
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25
D.3 Zero Calibration
In this manual, zero calibration means the process of calibrating the output
concentration in the environment of Oxygen 20.9% and toxic gas 0 ppm. Zero calibration
should be performed at room temperature n the clean atmosphere without harmful gas
around.
If you enter the gas concentration calibration page in the dedicated app, you can see
that there are 3 types of menus such as “Zero Calibration”, “Span Calibration” and
“Complete” on the upper part. After selecting the
Zero Calibration
menu, press the
Calibrate button and the gas concentration calibration will start as shown in the figure
on the right upper part.
NOTE::
When calibration starts, G-Tag LED indicator will blinks in purple (interval of 1
second).
When the calibration is complete, a message is displayed, indicating the calibration is
complete on the upper part of app. G-Tag gives calibration complete alarm.
