Specifications subject to change without notice.
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www.extech.com 6/24/09 - R1
Measures Carbon Dioxide (C02), Temperature, Humidity, Dew Point, and Wet Bulb
And calculates statistical 8 hour and 15 minute time weighted averages
Portable Indoor Air Quality CO2Meter
Ordering Information:
CO250 ....................Portable Indoor Air Quality CO2 Meter
RH300-CAL ............33% and 75% RH Calibration Kit
Features:
•Checks for Carbon Dioxide (CO2) concentrations
•Calculates statistical weighted averages of TWA (8 hour time
weighted average) and STEL (15 minute short term exposure limit)
•Maintenance free NDIR (non-dispersive infrared) CO2sensor
•Measurement ranges:
CO2: 0 to 5,000ppm
Temperature: 14 to 140°F (-10 to 60°C)
Humidity: 0.0 to 99.9%
•User programmable audible alarm
•Backlit triple LCD display
•Built-in RS-232 interface for capturing readings on PC
•Data acquisition software and cable included to record
and document CO2, Humidity and Temperature data
•Optional 33% and 75% RH calibration bottles (RH300-CAL)
•Complete with software and cable, 4 AA batteries,
and carrying case
Applications:
•Check air quality in schools, office buildings,
greenhouses, hospitals and anywhere that high
levels of carbon dioxide are generated
Measure CO2level in office buildings to check the air quality of
conference rooms insuring proper ventilation.
Specifications Range Resolution
Carbon Dioxide (CO2) 0 to 5,000ppm 1ppm
Temperature 14 to 140°F (-10 to 60°C) 0.1°F/°C
Humidity 0.0 to 99.9% 0.1%
Wet Bulb and Dew Point Calculated
Dimensions 7.9x2.7x2.3” (200x70x57mm)
Weight 6.7 oz. (190g)
