Order Code : EXT18
Measures Carbon Dioxide (CO2), Air Temperature and Humidity
- Checks for Carbon Dioxide (CO2) concentrations with Max/Min value recall function.
- Maintenance free NDIR (non-dispersive infrared) CO2 sensor.
- Indoor Air Quality displayed in ppm with Good (380 to 420ppm), Normal (<1000ppm), Poor (>1000ppm) indication.
- Visible and Audible CO2 warning alarm with relay output for ventilation control.
- Measurement ranges:
CO2 : 0 to 9,999ppm
Temperature: 14 to 140°F (-10 to 60°C)
Humidity : 0.1 to 99.9%RH
- Displays Year, Month, Date, and Time.
- Automatic Baseline Calibration (minimum CO2 level over 7.5 days) or manual calibration in fresh air.
- A Quality product from Extech, USA.