Legal analysis: In order to meet the special needs of the environmental protection industry, the online monitoring system of oil fume is a set of high-performance system which integrates oil fume monitoring, data acquisition and data transmission by using the sensing technology of the Internet of Things and GPRS wireless communication technology. On-line monitoring of indicators such as fume emission concentration, purifier operation state and fan operation state of catering enterprises can unify the working condition data of fume treatment facilities and fume concentration data, and provide direct, effective and real fume monitoring equipment for the Environmental Protection Bureau.

Legal basis: Request for instructions on the equivalence between online monitoring data of boiler flue gas and manual monitoring data In order to improve the monitoring efficiency and technical level of pollutants discharged from boilers, the national emission standard "Emission Standard of Atmospheric Pollutants for Boilers" requires that a single boiler with a newly built capacity of 14mw (20t/h) must be installed with fixed continuous monitoring from March 1 day, 2000. Therefore, according to the requirements of Emission Standard of Air Pollutants for Boilers and Technical Requirements and Detection Methods of Continuous Monitoring System for Flue Gas Emission from Stationary Pollution Sources (HJ/T76-200 1), the continuous monitoring instrument for boiler flue gas and sulfur dioxide emission meets the technical requirements of the instrument and has passed the inspection. The measured data are valid and can be used for environmental protection management. When there is any objection to the data measured by the above instruments, the method specified in Emission Standard of Air Pollutants for Boilers should be adopted for checking.