Extech Instruments CO230 User Manual page 2

Introduction
Thank you for selecting the Model CO230 Carbon Dioxide Monitor. This
meter measures CO
temperature and relative humidity.
The audio-visual alarm and alarm relay output make this is an ideal
instrument for indoor air quality (IAQ) diagnostics. Carbon dioxide (CO
is a gaseous component of the earth's atmosphere. The concentration of
CO in natural ambient air is approximately 0.04% or 400ppm.
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The NDIR (non-dispersive infrared) sensor provides stable, long term
monitoring.
This meter is shipped fully tested and calibrated and, with proper use,
will provide years of reliable service.
FEATURES

LCD simultaneously displays CO
Temperature (air, dew point, or wet bulb)

Stable NDIR sensor for CO

Weighted averaging: TWA (8 hours) & STEL (15 minutes)

Automatic Baseline Calibration (ABC). Can be disabled for use in
areas with continuously elevated CO

Manual CO

Audio-visual CO

Dew Point and Wet Bulb temperature calculations

Relay output for connecting external indicators or controllers
concentration, air temperature, dew point, wet bulb
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calibration
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concentration warning alarm
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Level, Relative Humidity, and
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detection
levels (>400ppm)
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CO230-en-GB_v1.0 1/16
)
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