Automatic Zero Calibration (Co 2 ) - Dräger X-node Technical Manual

3. Wait until the stability criterion for calibration is met (see figure: The "Start adjustment" button will be
greyed out until the stability criterion is met).
4. Press "Zero-point calibration" to set the zero point.
5. Check whether the measured value shown corresponds to the zero gas concentration.
6. Terminate the supply of zero gas.
6.3.1 Automatic zero calibration (CO
CO sensors provide an automatic zero calibration. This is carried out after every 14400 measurements,
2
which corresponds to approximately 10 days.
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