Setting Altitude (Altitude Compensation); Setting The Carbon Dioxide Normal Value In The Outside Area - VOLTCRAFT CO-100 Notice D'emploi

d) Setting Altitude (Altitude Compensation)
To receive correct values from your measurements, the altitude at the operating site of the
CO meter must be set. The setting uses altitude meters referring to sea level (NN = sea
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level).
Proceed as follows:
• Briefly press the „MODE" button repeatedly (from the normal operating mode) until
„ALTI" flashes on the display.
• Briefly press the button „ENTER"; the medium display line shows the altitude display and
the altitude unit „m" (meter) flashes.
• Set the altitude with the arrows „" and „".
• Briefly press the button „ENTER" to save the setting.
e) Setting the Carbon Dioxide Normal Value in the Outside Area
The carbon dioxide normal value is required as a reference value to calculate the
ventilation rate („VENT RATE") (also see chapter 9 i). The pre-set reference value is the
generally applicable value of 400ppm (average value of CO
atmosphere).
To change the normal value, proceed as follows:
• Briefly press the „MODE" button repeatedly (from the normal operating mode) until
„OUTSIDE" flashes on the display.
• Briefly press the button „ENTER"; the medium display line shows the reference value
(factory setting 400ppm).
• Set the reference value with the arrows „" and „".
• Briefly press the button „ENTER" to save the setting.
concentration in the
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