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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 oxidaon
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
concentraons, carbon monoxide can poison a person within minutes.
5. Trigger sensivity
If the device records increased CO values, an alarm signal sounds and the red LED
starts blinking. At the same me the current CO value is displayed on the display
of the device.
6. Symptoms of CO poisoning
The following symptoms may be related to CO poisoning:
35 ppm The maximum allowable concentraon for connuous exposure of
healthy adults in any 8 hour period.
200 ppm Slight headache, fague, dizziness, nausea aer 2-3 hours
400 ppm Frontal headache within 1-2 hours, life-threatening aer 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
CO concentraon Response
me Alarm sound
30 ppm-49 ppm aer 120 min 3 beeps every 2 seconds, interval of
1.5 seconds between 3 beeps
50 ppm-99 ppm 60-90 min 4 beeps every 4 seconds, interval of
1.5 seconds between 4 beeps
100 ppm-299 ppm 10-40 min 4 beeps every 4 seconds, interval of
1.5 seconds between 4 beeps
300 ppm or higher 0-3 min 4 beeps every 2 seconds, interval of
0.8 seconds between 4 beeps
