4. What is carbon monoxide?
Carbon monoxide is a colourless, odourless and tasteless gas which can barely be
perceived by the human senses. It is generated during the incomplete oxidation
of substances containing carbon, such as wood, charcoal, fuel oil, petrol or gas.
Carbon monoxide kills or harms hundreds of people every year. It binds the
haemoglobin in the blood and reduces the amount of oxygen in the body. In high
concentrations, carbon monoxide can poison a person within minutes.
5. Trigger sensitivity
If the device records increased CO values, an alarm signal sounds and the red LED
starts blinking. At the same time the current CO value is displayed on the display
of the device.
6. Symptoms of CO poisoning
CO concentration
30 ppm-49 ppm
50 ppm-99 ppm
100 ppm-299 ppm
300 ppm or higher
The following symptoms may be related to CO poisoning:
35 ppm The maximum allowable concentration for continuous exposure of
healthy adults in any 8 hour period.
200 ppm Slight headache, fatigue, dizziness, nausea after 2-3 hours
400 ppm Frontal headache within 1-2 hours, life-threatening after 3 hours
800 ppm Dizziness, nausea and convulsions within 45 minutes. Unconsciousness
within 2 hours, Death within 3 hours.
1600 ppm Headache, dizziness and nausea within 20 minutes. Death within 1
hour
English
Response
Alarm sound
time
3 beeps every 2 seconds, interval of
after 120 min
1.5 seconds between 3 beeps
4 beeps every 4 seconds, interval of
60-90 min
1.5 seconds between 4 beeps
4 beeps every 4 seconds, interval of
10-40 min
1.5 seconds between 4 beeps
4 beeps every 2 seconds, interval of
0-3 min
0.8 seconds between 4 beeps
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