Voltcraft CO-100 Room Air Meter CO-100 Data Sheet

Calibration was already performed by the manufacturer. nevertheless, you can perform
calibration again yourself.

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Observe that new calibration only makes sense if a more precise value for calibration
is known to you!

• You have another, precisely calibrated CO

2

 meter. Of course, you can perform

calibration yourself then.

• You are using the value of the average CO

2

 concentration present in the atmosphere

outside, e.g. outside a building. However, strong deviations may occur depending on
environmental conditions (town, road, forest; industrial area, exhaust, etc.)! Usually, the
outside CO

2

 concentration is at 380-420ppm.

Attention! The product will be damaged if it becomes damp or wet.  The mains
adapter also poses fatal danger from electric shock!

• Let CO

2

 gas at a known concentration escape close to the gas measurement opening.

Air currents and environmental conditions may, however, also cause strong deviations
here.

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We therefore recommend leaving the manufacturer’s calibration or only performing
calibration using another, precisely calibrated CO

2

 meter or if you know the precise

CO

2

 concentration.

• Briefly press the „MODE“ button repeatedly (from the normal operating mode) until

„CALI“ flashes on the display.

• Briefly press the button „ENTER“; the medium display line shows the calibration value

display.

• Set the calibration value with the arrows „“ and „“. The calibration value is the CO

2

measured value you want to use for calibration, see above.

• Keep the „MODE“ button pressed for approx. 10 seconds. The display „CALIBRATING“

flashes at the bottom of the display. Calibration tapes approx. 3 minutes.

Important: Never breathe next to the CO

2

 meter. Keep sufficient distance.

Avoid strong airstreams, do not move the CO

2

 meter.

• After completion of calibration, the display indicates „PASS“ (calibration successful) or

„FAIL“ (calibration unsuccessful).