CO15-en-GB_v1.0 6/17
3
Electromagnetic (EMI) interference my cause erratic
meter readings; do not place meter near areas of high
EMI when taking CO measurements.
Recovery time is required after the meter has been
exposed to high levels of CO (the longer the exposure,
the longer the recovery time).
Carbon monoxide is life threatening even at
relatively low concentrations; learn and
recognize the effects of CO poisoning (see Table
below). Do not use this meter as a personal
safety monitoring device.
Effects of Carbon Monoxide (CO) Poisoning
Warning: Ensure that the meter is powered on in room
temperature and in an area free of CO. If not, the meter
will read incorrectly when subsequently measuring CO.
0-1 PPM
Normal background levels
9 PPM
Maximum allowable short term
exposure
50 PPM
Maximum allowable continuous
exposure level in any 8-hour period,
according to OSHA
200 PPM
Mild headache, fatigue, nausea and
dizziness after 2-3 hours
400 PPM
Frontal headache with 1-2 hours, life
threatening after 3 hours
800 PPM
Dizziness, nausea, convulsions within
45 minutes. Unconsciousness within 2
hours. DEATH WITHIN 2 TO 3 HOURS
1600 PPM
Headache, dizziness, nausea within 20
minutes, DEATH WITHIN 1 HOUR
3200 PPM
Headache, dizziness, nausea within 5-
10 minutes. DEATH WITHIN 25-30
MINUTES
6400 PPM
Headache, dizziness, nausea within 1-
2 minutes. DEATH WITHIN 10-15
MINUTES
12800 PPM
DEATH WITHIN 1 TO 3 MINUTES
