Working principle of carbon dioxide concentration detector
Speaking of carbon dioxide, I believe everyone will not feel unfamiliar. For example, the content of carbon dioxide in the air is only 0.03%. However, when the concentration of carbon dioxide in some workshops and other places is too high, it will cause great harm to the human body. The main harm of carbon dioxide to the human body is to stimulate the human respiratory center, resulting in shortness of breath, increased smoke inhalation, and can cause symptoms such as headaches and confusion. The content of carbon dioxide in fresh air is about 0.03%. People living in this space will not be harmed, if there are many people gathered in the room, and the air is not circulated. Or there is gas, liquefied petroleum gas and coal stoves burning in the room, so that the oxygen content in the air is relatively reduced, and a large amount of carbon dioxide is produced, and the indoor personnel will appear poisoning symptoms to varying degrees.
The carbon dioxide concentration detector is an intelligent high-performance safety detection device that monitors the concentration of carbon dioxide in the air and has real-time display and real-time alarm functions. So do you know how the carbon dioxide concentration detector works? The following editor will introduce to you:
Working principle of carbon dioxide concentration detector:
The carbon dioxide concentration detector adopts the principle of infrared measurement, through-type sampling method, embedded installation, based on the principle of infrared absorption, the detection part has no wear and maintenance; it has good selectivity for the gas to be measured; the calibration interval is long, high, Stable and reliable; built-in temperature compensation sensor to reduce the error caused by temperature changes; 5000 pieces of historical data can be automatically stored, and users can browse historical data locally at any time; the analyzer comes with a standard RS232 (default) or RS485 communication port, which can Two-way communication with the computer; embedded installation, easy and convenient installation; wide-range power supply, reducing the impact of mains fluctuations. Widely used in welding and cutting gas ratio.
At present, there are no unified regulations in various countries regarding the maximum allowable content of carbon dioxide in indoor air. Japan stipulates that the indoor air carbon dioxide content is 0.15% as the ventilation standard. The following table shows the impact of CO2 content in the air on the human body. Concentration of CO2 in the air/% Symptoms 2.5 No symptoms for several hours 3.0 Involuntary increased breathing rate 4.0 Local irritation symptoms 6.0 Increased breathing volume 8.0 Dyspnea 10.0 Confusion, death soon 20.0 Paralyzed after a few seconds, heart stops beating. Therefore, it is necessary to use it in some occasions where the concentration of carbon dioxide released is relatively high.
