NDTUM-S2B-EN REV1.0
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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::
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When calibration starts, Smart Safety Ball LED indicator will blinks (interval
of 1 second).
§
When the calibration is complete, a message is displayed, indicating the
calibration is complete on the upper part of app. Smart Safety Ball gives
calibration complete alarm.