(1) system introduction

The environmental air quality automatic monitoring system can monitor the environmental air quality for 24 hours. The system consists of monitoring center station, monitoring substation and quality assurance laboratory. The air environment monitoring sub-station includes sampling system, gas analysis instrument, calibration device, meteorological system, data collection of sub-station, etc. The data of sub-station monitoring is transmitted to the environmental monitoring center station via telephone line for real-time control, data management and chart generation.

(2) system composition

Monitoring center
central computer
ENVIDATA data processing software
Monitoring the child standing
sampling system: sampling main and control solenoid valve
gas analysis instruments:
1. Pulse ultraviolet fluorescence SO2 analyzer
2. Chemiluminescence NO-NO2-NOx analyzer
3. Gas filtering related infrared absorption CO analyzer
4. Ultraviolet light method O3 analyzer
particulate analysis instruments:
1. Gamma ray particle continuous monitor
2. Particle monitor of micro oscillatory balance method
calibration instruments: various gas calibrators, zero gas generators, standard gas
weather systems: wind direction sensor, wind speed sensor, temperature and humidity sensor, atmospheric pressure sensor
data collection and processing system: data collector, central station data processing software
Quality assurance laboratory

(3) monitoring items

SO2, NO, NO2, NOx, CO, O3, PM2.5, PM10, five meteorological parameters (including wind direction, wind speed, temperature, humidity and pressure)

(4) functions and features

automatic sampling analysis
the worlds patented pulse fluorescence technology and the worlds highest precision analytical instrument.
all instruments have good anti-interference ability
all data output from the monitoring analyzer can be automatically converted to standard concentration
the monitoring system is capable of continuous sampling analysis, automatic timing and standard gas inspection, and the entire sub-station can be unattended.
the data collection and central control system of sub-station provides Chinese sub-station and central station software. The sub-station microcomputer adopts the most advanced industrial computer design, and the central station software takes WINDOWS as the operating interface to provide the greatest convenience for users.
it has 0-100mv, 0-1, 0-5, 0-10v analog output mode, providing the rs232/485 two-way digital communication interface
basic functions such as automatic transmission of data, remote automatic and manual control, fault diagnosis and alarm. The effective data capture rate of the whole system is better than 90%.
data collection and transmission is complete, accurate and reliable, and the error of collection and measurement is no more than 1%;
the technical performance meets the EPA requirements
China national bureau of technical supervision quality certification