Regulatory exposure limits for Carbon Dioxide (CO
2
)
ASHRAE Standard 62-1989: 1000ppm: CO2 concentration in
occupied building should not exceed 1000ppm.
OSHA: 5000ppm: Time weighted average over five 8-hour
workday should not exceed 5000ppm.
Building bulletin 101 (BB101): 1500ppm. UK standards for schools
state that CO2 averaged over the whole day (i.e. 9:00am to 3:30
pm) should not exceed 1500ppm.
Germany, Japan, Australia, UK: 5000ppm, 8 hours weighted average
in occupational exposure limit is 5000ppm.
EPA Taiwan (Type 1): Indoor areas such as department stores,
theaters, restaurants, libraries have acceptable CO2 concentration of
1000ppm over an 8-hour average period.
EPA Taiwan (Type 2): Indoor areas with special requirements for
good air quality such as schools, hospitals, and day care centers
have suggested CO2 level of 600ppm
Description
METER
1.
Temperature and Humidity sensor
2.
Primary display
3.
Secondary display
4.
Power and Set button
5.
Start and Escape button
6.
Mode and Recall button
7.
Min-Max-Avg and Enter button
8.
Memory and Down button
9.
CO and CO2 sensors (on rear of meter)
10. Hold and Up button
11. AC Adaptor and Micro USB ports
Battery compartment on rear of meter
