Carbon Dioxide Levels and Guidelines
CO2 Level
Description
400ppm
Normal outdoor air level.
400-1000ppm
Typical level indoors with good ventilation.
NOTE: If CO2 levels are low when building is
sealed and occupied, check for over-
ventilation (too much fresh air = energy
wasted).
1,000ppm
ASHRAE and OSHA recommended
maximum level in a closed room. Considered
maximum comfort level in many countries.
> 1,200ppm
Poor air quality - requires ventilation
2,000ppm
According to many studies this level of CO2
produces a significant increase in
drowsiness, tiredness, headache lower levels
of concentration and increased likelihood of
spreading respiratory viruses like colds, etc.
＞
5,000ppm
OSHA and NIOSH first threshold for safety.
maximum allowed concentration within a 8
hour working period
Specifications
Carbon Dioxide Range: 0
～
9999PPM
Accuracy: ± 70ppm ± 3% of reading (0
～
5,000ppm
Resolution: 1ppm
Response time: 1 second
Temperature Measurement: -10 to 70
℃
(14
～
158
℉
)
Temperature Resolution: 0.1
℃
/
℉
Temperature measurement Accuracy: ± 0.3
℃
(10
～
55
℃
)
Humidity measurement: 0
～
99.9%RH
Humidity Resolution: 0.1%
Humidity Accuracy: ±3% (from 10
～
90% RH)
Power: 3.7V Lithium Battery
Data Log Memory: 12,700 Data Points
Working Conditions: 0
～
50
℃
,
0
～
85%RH (no condensation)
Storage Conditions: -20
～
60
℃
, 0
～
90%RH (no condensation)
Guidelines are average CO2 levels over time.
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www.CO2Meter.com
www.CO2Meter.com
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