Grid based atmospheric detectorSystem composition of atmospheric pollutants: NO2 (NO, NOx) monitor, ozone monitor, carbon dioxide monitor, carbon monoxide monitor, PM10 monitor; Meteorological system: capable of measuring wind speed, direction, temperature, humidity, and atmospheric pressure.
On site calibration system: including multiple standard gases and a set of gas calibration devices.
Central station and substation system: capable of continuously and automatically collecting data and status information from air pollution monitoring instruments, meteorological instruments, on-site calibration, etc. And perform preprocessing and storage, waiting for central computer polling or instructions.

Installation preparation:

1. Soil ground. A 50 * 50 * 50cm soil pit needs to be excavated, with embedded parts placed in the center, and concrete poured (flat level). The top of the embedded parts should be 5cm above the ground. When pouring concrete, the threads of the embedded parts should be wrapped and solidified for 7-10 days before installing the equipment.

Preparation of materials and tools: shovel, tap water, concrete, trowel, several boards, medium cross screwdriver, level ruler, open-end wrench, pliers

2. Hard ground (thickness not less than 10cm). According to the installation holes on the bracket base, drill four circular holes with a diameter of 18mm and a depth of 120mm on the hard ground, insert M14 expansion bolts, and then directly install the equipment.

　　Grid based atmospheric detectorMaterial and tool preparation: drilling hammer, hammer, medium Phillips screwdriver, level ruler, adjustable wrench, pliers

Countries around the world attach great importance to the layout of air monitoring networks and the placement of monitoring points. China has also formulated relevant monitoring technology standards, and coordinated planning and management of the national air monitoring network and monitoring points. The increasing frequency of haze in recent times has directly exposed the quality problems of the air environment to the public. People urgently want to know the real information of air quality, which also puts forward new requirements for the improvement of urban environmental air monitoring points. The monitoring points must meet the requirements of automatic air monitoring. In the process of setting up the air monitoring plan, it is not possible to simply lay out the points according to the grid layout and random allocation. It is necessary to carefully consider the labor cost, time cost, and the reliability of the monitoring data to make separate setting plans. Then, through comprehensive consideration, comparison, and scientific demonstration, a relatively complete set of air quality monitoring point setting plans can be formed, and appropriate optimization and adjustment can be made according to the continuous changes in the on-site environment.