Operation; Powering The Instrument - Extech Instruments CO220 User Manual

PUSH-BUTTON DESCRIPTION
SET
ESC - MEM
SELECT/RECALL
o o
C/ F - %RH
CO
2

Operation

POWERING THE INSTRUMENT

Power the unit by plugging the AC
adaptor into the meter and into an AC
source. The meter will switch ON with a
short beep.
Please use an appropriate power source:
100 to 240VAC (50-60Hz). The AC
adaptor's output voltage is 7.5 to 9.0V
and its output current is 0.5A. Use of 3
party AC adaptor can damage the meter.
The LCD will display the current CO
concentration, air temperature, relative
humidity, date, and time (date and time
toggle every 10 seconds). Six facial icons indicate the indoor air
quality level and appear on the top-tier display area (see figure at
right and the section titled Display Symbols earlier in this guide
for additional details).
Enter setup mode
Save and confirm settings
Exit setup and programming pages
End a calibration session
Memory Datalogger (99 points)
Select/Recall and Clear Datalogger
Memory Readings
Temperature/Relative Humidity
Modes/Temperature Unit changing
CO mode page stepping
2
2
5
rd
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