At What Concentration Does a Carbon Monoxide Detector Trigger an Alarm?
Carbon monoxide can cause coma or even death in a short period of time without making a sound. Tragedy caused by carbon monoxide poisoning is not uncommon every year, and as an important defense line to protect life safety, the setting of the alarm concentration value of the carbon monoxide detector directly affects whether it can timely warn and avoid danger.
1, General setting
Carbon monoxide detectors usually have two levels of alarm values, namely the first level alarm value and the second level alarm value. The specific settings of these two values may vary depending on the instrument model and usage scenario.
The common setting range for the first level alarm value is between 10ppm and 50ppm. Some suggested settings include 10ppm, 25ppm, and 30ppm. When the concentration of carbon monoxide in the air reaches or exceeds this value, the detector will emit a low-frequency sound and light alarm signal to remind people to pay attention to ventilation and prevent further increase in carbon monoxide concentration.
The common setting range for the second level alarm value is between 50ppm and 300ppm, and there are also cases where it is set to 150ppm to 300ppm or 200ppm to 500ppm. When the concentration of carbon monoxide in the air reaches or exceeds this value, the detector will emit a high-frequency sound and light alarm signal, warning people that immediate measures must be taken, such as rapid evacuation, to avoid poisoning accidents.
2, Special settings
In some special cases, the alarm concentration value of the carbon monoxide detector may need to be specially set. For example, being in a closed indoor environment for a long time may gradually increase the concentration of carbon monoxide indoors, so it may be necessary to adjust the alarm concentration value lower in order to issue an alarm in a timely manner.
