Dongying City Commercial Building Civil Air Defense Air Quality Detector

NegotiableUpdate on 02/05

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Nature of the Manufacturer: Producers

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Overview

Air quality detector is a portable or fixed intelligent device that can monitor and analyze the concentration of various pollutants and related environmental parameters in the air in real time. It uses a built-in high-precision sensor array, combined with *'s data analysis algorithm, to transform the originally intangible air quality data into intuitive and understandable numbers, charts, and Air Quality Index (AQI), helping users comprehensively understand the air quality status of their environment and providing scientific basis for respiratory health decision-making. Dongying City Commercial Building Civil Air Defense Air Quality Detector

Product Details

1、 Analysis of core detection parameters

1. PM2.5: Diameter≤2.5Micro sized inhalable particulate matter mainly comes from coal combustion, vehicle exhaust, and industrial emissions. Long term exposure can cause respiratory diseases and cardiovascular problems. The national standard daily average limit is75μg/m³When selecting, pay attention to whether the instrument uses laser scattering method, and the detection accuracy should reach±10μg/m³or±10%Read (take the larger value).

2. Formaldehyde（HCHO）Colorless irritating gas, commonly used as an adhesive in decoration materials. Short term exposure can cause eye discomfort and respiratory irritation, while long-term exposure may trigger cancer. National Standard1The hourly mean limit is0.10mg/m³It is recommended to choose equipment equipped with electrochemical sensors, and the response time should be≤60Second, resolution not less than0.01mg/m³.Dongying City Commercial Building Civil Air Defense Air Quality Detector

3. TVOC(Total volatile organic compounds)Contains various organic compounds such as benzene derivatives and alkanes, mainly from paints, furniture, and cleaning agents. High concentrations can cause symptoms such as dizziness, according to national standards8The hourly mean limit is0.60mg/m³Professional models need to havePIDPhoton ion sensor with detection range coverage0.01-10mg/m³.

4. Temperature and Humidity Monitoring: Temperature（10-40℃）And humidity（30%-80%RH）Although not a pollutant indicator, it affects physical comfort and the speed of pollutant diffusion. Suggest choosing accuracy up to±0.5℃and±5%RHThe device supports every10Automatically record data in minutes.

2、 Comparison of mainstream technical solutions

Technical Type	advantage	局限性	Applicable scenarios
laser scattering	Fast response speed（<1High precision (in seconds)	High cost, requiring regular calibration	Professional laboratory, long-term monitoring at home
Infrared sensor	Low power consumption and long lifespan（>5Year)	Easily affected by environmental temperature and humidity interference	Portable devices, short-term testing
electrochemical method	Good selectivity and high sensitivity	The lifespan of the sensor is limited（2-3Year)	FormaldehydeCOWaiting for specific gas detection
metal oxide	Broad spectrum response, low cost	Poor stability and severe cross interference	Entry level testing equipment

3、 Select key indicators

1. detection accuracy：PM2.5Error should be≤±5μg/m³（0-100μg/m³Range), formaldehyde detection error≤±0.02mg/m³.

2. response time：T90(Reaching)90%The reading time should be≤30Quickly respond to sudden pollution changes in seconds.

3. data storage: Support at least7Continuous data recording for days（1minute/Subsampling frequency), possessingUSBExport or wireless transmission function.Dongying City Commercial Building Civil Air Defense Air Quality Detector

4. sampling flowThe flow rate of pump suction equipment should be stable at1-5L/minEnsure the representativeness of the testing.

5. certification standard: Need to passCMA(China Metrology Certification)EPA(US Environmental Protection Agency) orCEAuthentication ensures data securityaccurateSex.

4、 Key points for use and maintenance

1. calibration cycleIt is recommended to use laser equipment every time6Calibrate once a month, and replace the filter element of the electrochemical sensor annually.

2. sampling location: Distance from the ground1.2-1.5mHeight, avoid dead corners such as air vents and corners, and surround the sampling point0.5mThere are no obstacles inside.

3. Environmental Requirements: Working temperature0-40℃Relative humidity20%-85%RHAvoid direct sunlight and strong electromagnetic interference.

4. data interpretation: CombiningAQIIndex comprehensive judgment, whenPM2.5>150μg/m³Or formaldehyde>0.15mg/m³Immediate protective measures must be taken.

5、 Typical application scenario configuration

·Family Basic Edition: Select IntegrationPM2.5+formaldehyde+Three in one equipment for temperature and humidity detection, recommended budget800-1500Yuan, recommended models such as Xiaomi Mi Home air detector4Qingping air detectorPro.

·Professional laboratory versionMulti parameter detection module is required（PM1.0/PM2.5/PM10/TSPFour channel), external sampling pump and data networking function, budget5000Above yuan, we recommend SartorisCubeSeries.

·Portable detection versionPrioritize weight selection<200g, battery life>8A device that supports Bluetooth data transmission and is suitable for post renovation inspections, new car inspections, and other scenarios. Recommended brands include Bolangtong and Hanwang.