Completed by Hebei University of Engineering, "the use of differential absorption spectroscopy real-time monitoring of air pollution research project recently passed the acceptance. The differential absorption spectroscopy used in this project is not only suitable for the high-resolution high-resolution spectrometer to measure the inversion calculation of the atmospheric pollutant NO2 concentration, but more importantly, it is also applicable to the low-cost ordinary spectrometer, and the use of ordinary spectroscopy Also get good inversion results. Since the reference spectrum of this project is obtained on the ground in the area under test, it is more economical and convenient to collect the reference spectrum than on the plane or on the mountain top. Therefore, the use of the technology for the concentration of NO2 atmospheric pollutants cost less money, easy to operate and can guarantee a certain degree of measurement accuracy, with strong universality. At the same time, the technology of differential absorption spectroscopy studied in this project is not only suitable for monitoring the concentration of NO2 in air, but also for the monitoring of other nitrogen oxides, SO2, O3 and other pollutants in the atmosphere. Only need to monitor the wavelength shift to the vicinity of the characteristic absorption peak of pollutants, at the same time, the absorption cross-section data into the corresponding pollutants absorption cross-section data can be. In addition, simultaneous monitoring of multiple contaminants can be achieved if the spectrometer used has a wide range of acquisition wavelengths. The implementation of this project will bring better social, economic and environmental benefits to Handan City and help the city achieve the goal of sustainable development.
Details of steel bar Straightening Machine
Easy to disassemble, easy to carry and install, and equipped with digital control device, which can be positioned according to customers' different requirements, quantity and length. Steel Bar Straightening And Cutting Machine Cnc Cutting Machine,Steel Straightening Machine,Sheet Bar Machine,Straightening Cutter Machine Shandong Luteng Building Equipment Co., Ltd. , https://www.lutengmachinery.com
Straightening speed, cutting is correct, no noise, no cut, adjustable straight Φ 4-14 plates reinforced with Φ Φ level 4 - Φ 12 reinforced bar, suitable for all kinds of construction site and reinforcing steel bar processing.
Product features of steel bar straightening machine
There are automatic steel cutting machine and semi-automatic steel cutting machine.
Automatic cutting machine is also called electric cutting machine, which is converted from electric power through motor to kinetic energy to control cutting knife incision to achieve the effect of shearing steel.
While semi-automatic is manual control of the incision, so shear reinforcement operations.
And at present more should belong to hydraulic Steel Bar Cutting Machine.
Hydraulic steel Bar Cutting Machine is divided into two categories: charging type and portable type.
1. Microcomputer control, automatic straightening and automatic cutting.
2. Simple operation and simple use.
3. Small occupation and convenient disassembly and assembly.
4. The computer can store memory efficiently and conveniently.
5. Smooth operation, low fault rate and convenient maintenance.
6. The machine body is fully protected by iron case, so it is safer and more reliable to use.
Classification of steel bar straightening machine
It is suitable for cutting all kinds of plain carbon steel, hot steel round steel, screw steel, flat steel and square steel in construction engineering.
The project "Real-time monitoring of atmospheric pollution using differential absorption spectroscopy" has progressed