| Sampler has accurate results,low cost and more applications in the field of environmental monitoring.At present,with the development of science and technology,there are many types of samplers such as tsp,which have stronger performance.Intelligent two-way constant temperature and constant current atmospheric continuous sampling sampler is designed to effectively control the production cost,improve portability,achieve high precision,high performance and strong market competitiveness.First,there are many requirements for the detection of air pollutants,collecting nitrogen oxides and other pollutants,and effectively designing a sampling system.Secondly,the hardware and mechanical parts of the sampling system are designed.The PID algorithm of temperature control and the error of electronic flowmeter are analyzed,which makes the system control have higher precision.So that the system hardware can collect pm 2.5,Pb and the like,and the intelligent two-way constant-temperature constant-current atmospheric continuous sampler will be more widely used.Thirdly,data analysis and performance testing are carried out to verify the effect of the sampler. |