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Extech Portable Indoor Air Quality CO₂ Meter

Use the Portable Indoor Air Quality CO2 Meter with built-in RS-232 interface for capturing readings on your PC.

Brand: Extech 81973-90

Product Code. 12200419

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Description

Check air quality in schools, office buildings, greenhouses, and anywhere that high levels of carbon dioxide are generated.
Features a maintenance-free NDIR (nondispersive infrared) CO₂ sensor, user-programmable audible alarm, backlit LCD, and RS-232 interface.
Meter calculates statistical weighted averages of TWA (8 hour time-weighted average) and STEL (15 minutes short term exposure limit).

Specifications

Gases Measured	CO2
Temperature (English) Operating	14°F to 140°F
Alarms	Audible
Display Type	Backlit LED
Outputs	RS-232

Product Type	Portable Indoor Air Quality CO2 Meter
Temperature (Metric) Operating	-10°C to +60°C
Connections	RS-232
Measurement Range	0 to 5000 ppm (CO2), 0.0 to 99.9% (RH)

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