Why does indoor carbon dioxide need online monitoring?
In the case of the Blue House indoor environmental monitoring instrument, many customers will encounter such problems with carbon dioxide monitoring: the concentration I detect indoors is sometimes around 500ppm, and sometimes it can reach around 1200ppm when it is high. Is this normal? ?How much concentration will be harmful to the human body? Below, Lanju will answer the questions related to carbon dioxide in indoor environmental monitoring.
The density of carbon dioxide is higher than that of air. When there is less carbon dioxide, it is harmless to the human body, but when it exceeds a certain amount, it will affect the breathing of people (and other organisms). The reason is that the concentration of carbonic acid in the blood increases, the acidity increases, and acidosis occurs. When the volume fraction of carbon dioxide in the air is 1%, you will feel stuffy, dizzy, and palpitations; when it is 4%-5%, you will feel dizzy. When it is above 6%, it will make people unconscious, breathing will gradually stop and cause death.
Because carbon dioxide is heavier than air, concentrations are higher in low-lying places. When artificially sinking a well or digging piles, poor ventilation will cause suffocation of people at the bottom of the well. The normal content of CO? is 0.04%. When the concentration of CO? reaches 1%, people will feel shortness of breath, dizziness, and heart palpitations. When it reaches 4%~5%, people will feel asthma, headache, and dizziness. Sometimes, it will cause serious confusion in the functions of the human body, causing people to lose consciousness, lose consciousness, stop breathing and die. Substances to avoid:
Various metal dusts (such as magnesium, zirconium, titanium, aluminum, manganese): easily ignite and explode when suspended in carbon dioxide. Water: Carbonic acid is formed.
Coma and cerebral hypoxia occur when people inhale high concentrations of carbon dioxide. Generally, when the carbon dioxide content in the atmosphere exceeds 1%, people will have a mild dizziness reaction; when it exceeds 3%, they begin to have difficulty breathing; Severe hypoxia suffocation and even death will occur.
The concentration of carbon dioxide will affect the daily life of human beings. The concentration of carbon dioxide and the physiological response of the human body are sorted out as follows:
·350～450ppm: Same as the general outdoor environment
·350～1000ppm: Fresh air and smooth breathing.
1000-2000ppm: feel the air is turbid, and start to feel drowsy.
·2000～5000ppm: feel headache, drowsiness, sluggishness, inability to concentrate, rapid heartbeat, mild nausea.
Greater than 5000ppm: May cause severe hypoxia, permanent brain damage, coma, or even death.
The content of CO? detected in serum (plasma) is one of the indicators of moderate metabolic acid-base, which basically represents the state of acid-base reserve in plasma.
Reactions to carbon dioxide poisoning
The main symptoms are: headache, dizziness, tinnitus, shortness of breath, chest tightness, fatigue, rapid heartbeat, cyanosis of the cheeks, irritability, delirium, dyspnea, and if the situation persists, lethargy, apathy, coma, loss of reflexes, dilated pupils Diarrhea, incontinence, blood pressure drop and even death.
When the concentration of carbon dioxide reaches more than 1%, people will feel dizzy. When it reaches 4-5%, people will suffer from nausea and vomiting, and have difficulty breathing. More than 10%, people will die.
Indoor air testing instruments have been widely used in office buildings, school classrooms, communities and other places. U-MINI intelligent small environmental monitoring terminal, the product adopts advanced integrated sensor technology, through the built-in microprocessor, detector and internal solidified calculation program, it can automatically complete the collection, calculation and analysis of the air composition of the external environment. Monitor PM2.5, PM10, temperature and humidity, carbon dioxide, formaldehyde and other gases and substances to achieve better environmental monitoring results
The indoor air detection instrument has two data transmission methods: wireless and wired; it includes a working status indicator; it has an early warning and forecast function. The U-MINI indoor air quality monitoring system terminal is small in size, light in weight, low in power consumption, small in space, and easy to install. At the same time, users can check the current indoor air detection data at any time through the mobile APP client independently developed by Lanju, so as to understand the indoor air quality more intuitively. The WeChat service account updates information synchronously, making data ubiquitous and information one step ahead.
