Extech Instruments CO220 User Manual page 2

Introduction
Congratulations on your purchase of the Model CO220 Carbon Dioxide
Meter. This meter measures CO
relative humidity. The CO200 includes a 99 Memory Datalogger for
storing and retrieving readings with date and time stamping.
The audible alarms make this is an ideal instrument for indoor air
quality (IAQ) diagnostics. Carbon dioxide (CO
component of the earth's atmosphere. The concentration of CO
natural ambient air is approximately 0.04% or 400ppm.
This meter is shipped fully tested and calibrated and, with proper use,
will provide years of reliable service. Please visit our website
(www.extech.com) to check for the latest version of this User Guide,
Product Updates, and Customer Support.
FEATURES
 Extra Large LCD simultaneously displays CO
Temperature, & Relative Humidity
 Displayed Calendar Clock.
 Six (6) icons indicate indoor air quality levels (350 / 450 / 700 /
1000 / 1250 / 5000ppm)
 Stable NDIR sensor for CO
 Automatic Baseline Calibration (ABC) function
 Audible high CO
threshold
 Dew Point and Wet Bulb temperature measurements
concentration, air temperature, and
2
detection
2
concentration alarm with selectable high alarm
2
) is a gaseous
2
2
2 CO220-en-US_V1.5 8/20
Level, Air
in
2