1.Hazards of carbon monoxide CO.

Carbon monoxide is colorless, odorless, tasteless, but inhaled on the human body has a very big harm. It combines with hemoglobin to produce carboxyhemoglobin, which causes hypoxia. The most common symptoms of carbon monoxide poisoning, such as headache, nausea, vomiting, dizziness, fatigue and feeling weak, exposure to carbon monoxide can seriously damage the heart and central nervous system, there will be sequelae.According to the test, the concentration of carbon monoxide in the air reaches50ppmWhen healthy adults can bear8hours; reaching200ppmWhen healthy adults2～3After hours, slight headache, fatigue; reach400ppmWhen healthy adults1～2forehead pain within hours,3Threat to life after hours;800ppmWhen healthy adults45Within minutes, dazzle, nausea, cramps,2Lose consciousness within hours,2～3Death within hours.

Source of Carbon Monoxide in 2. Garage

The production of carbon monoxide in the underground garage mainly comes from the car engine. When the engine is running at idle speed, due to insufficient gasoline combustion, it will produce a large amountCOof the exhaust. The underground parking lot is a closed environment, and vehicles enter and exit frequently, and the exhaust gas emitted is not easy to be discharged, and it is easy to accumulate a large amountCOGas, causing the parking lot to be filled with choking smell, damaging people's health. Therefore, the underground garage, parking lot should be equipped with a delivery, exhaust system, with fresh air replacement.Underground garageCOContent should be lower than long-term25ppm, short term should not be higher37.5ppm. However, at present, many underground garages in the operation and management, the number of mechanical ventilation per hour often can not meet this requirement, so that the concentration of exhaust gas in the garage can not be effectively diluted through the mechanical ventilation system to achieve the standard of diluted exhaust gas, which has adverse effects on the users of the garage.

Monitoring Scheme of Carbon Monoxide Concentration in 3. Garage

      GB/T 50378-2019The "Green Building Evaluation Standard" mentions that "underground garages should be equipped with carbon monoxide concentration monitoring devices linked with exhaust equipment". The main purpose of the carbon monoxide concentration monitoring system is to keep the underground garageCOThe concentration is within the normal range, and the carbon monoxide concentration in the underground garage exceeds24ppmThe system will alarm and start the exhaust system to introduce fresh air to keep the carbon monoxide concentration within a safe range.

At present, Shenzhen Science and Technology Co., Ltd. has launched a limited detectionCOThe sensor has the characteristics of fast response, anti-interference, high resolution and good linearity. The following is the main parameters of this sensor:

Overload:2000ppm

Response time: <30s

Size: Φ32.3*16.5

Carbon monoxide detection range:1000ppm

Sensitivity:420-650nA/ppm

Zero: 30~-250nA

For details, please consult Shenzhen Technology Co., Ltd:http://www.apollounion.com/