The masses are more and more concerned about how to choose air quality testing instruments

[ Focus on Chemical Machinery and Equipment Network ] In 2015, because of a video, the word haze was firmly remembered by everyone, and then a lot of news began to point out the domestic haze problem, and the quality of control was suddenly controlled.
The rise has become one of the hot topics that the public pays close attention to.
To this day, the air quality situation and how to obtain better air quality are still the center of public attention.
And with the deepening of the understanding of air quality, the air quality that the masses are concerned about has not only stopped at outdoor air quality, but also gradually involved indoor air quality.

 

It is also because of the public's close attention to air quality that more and more air quality detectors have begun to appear in the public's field of vision.
Some of them are designed to meet the air quality testing needs of meteorological monitoring agencies such as *, and some are to meet the needs of the public.
Want to understand and improve indoor air quality needs.

 

Generally speaking, in order to ensure the accuracy and reliability of the data, the instruments used for ambient air quality detection will be more specific and will make certain adjustments according to the actual environmental conditions.
It should be mentioned that for environmental testing, air quality indicators include carbon dioxide concentration, humidity, PM2.
5 concentration, PM5 concentration, PM10 concentration, sulfur dioxide concentration, ozone concentration, and so on.

 

At present, the commonly used environmental air quality testing instruments include carbon dioxide concentration detectors, PM2.
5 and PM5 particulate detectors, sulfur dioxide detectors, etc.
In addition, there are many general analytical instruments that are also used for air quality testing, such as Infrared spectroscopy can be used to detect the concentration of ozone in the air.

 

The general civilian equipment used for indoor air quality testing tends to be more comprehensive.
It can usually detect multiple air quality parameters at the same time.
Compared with outdoor equipment, indoor air quality testing equipment will pay more attention to some Common indoor air pollutants, such as formaldehyde, TVOC.
In addition, for most families that have indoor air detectors, fresh air devices are also the focus of procurement.
Therefore, many indoor air detectors will be combined with fresh air devices to determine the indoor air through the instrument.
To determine the operating mode of the fresh air system and remind users to open windows for ventilation.

 

However, whether it is indoor or outdoor, the key to the quality of air quality testing equipment lies in the accuracy of the testing results of the equipment.
And this is largely determined by the quality of the gas sensor in the air quality detection instrument and the instrument design structure.
Generally speaking, a sensor corresponds to the detection of a gas.
For example, most indoor multi-parameter air detectors are equipped with formaldehyde sensors, PM2.
5 sensors, TVOC sensors, and temperature and humidity sensors.
However, it is possible between sensors.
There are mutual influences.
Therefore, only when each sensor can ensure the accuracy of the detection result, and the structural design can ensure that the air sample does not interfere with each other under the premise of contacting each sensor, can the detection result of the instrument be guaranteed.

 

　　So how do consumers choose air quality testing equipment correctly? According to the editor, before buying, you should first determine your purpose, commercial or domestic, and secondly, determine whether you need such an instrument.
For most families, the indoor space is moderate, north-south ventilated, and it is not a new house, and the surrounding area The air environment is not bad, so as long as the indoor ventilation is ensured, the indoor air quality can be guaranteed, and there is no need to spend extra money on equipment that is not commonly used.
And if you decide to buy, you need to know the basic parameters of the product and related qualification certificates from the manufacturer to ensure that the instrument works in accordance with the indoor air quality parameters and inspection methods specified in the "Indoor Air Quality Standards" and the error is within the acceptable range.

 

　　Original title: The masses are more and more concerned about air quality and how to choose air quality testing equipment