Ei Electronics Ei208DWRF Instructions Manual page 7

2.3 Symptoms of Carbon Monoxide Poisoning
Concentration
of CO in Air
ppm
35 The maximum allowable concentration for continuous exposure in any
8 hour period according to OSHA *.
150 Slight headache after 1.5 hours.
200 Slight headache, fatigue, dizziness, nausea after 2-3 hours.
400 Frontal headaches within 1-2 hours, life threatening after 3 hours, also maximum
parts per million in flue gas (on an air free basis) according to US Environmental
Protection Agency.
800 Dizziness, nausea and convulsions within 45 minutes. Unconsciousness within
2 hours. Death within 2-3 hours.
1,600 Headache, dizziness and nausea within 20 minutes. Death within 1 hour.
3,200 Headache, dizziness and nausea within 5-10 minutes. Death within 25-30 minutes.
6,400 Headache, dizziness and nausea within 1-2 minutes. Death within 10-15 minutes.
12,800 Death within 1-3 minutes.
ppm = parts per million
*OSHA Occupational Safety & Health Association
Table A
Inhalation Time (approx) and Symptoms Developed
6