Refined fixed-source VOCs concentration monitoring and early warning system scheme

Shenzhen Biye Qianli is a national high-tech enterprise specializing in the field of air pollution and atmospheric monitoring.It develops, produces, and sells grid-based micro-station VOCs online monitoring system. Fume online monitoring system, dust pollution monitoring system, indoor intelligent environmental system, dust. Sensors, weather stations, miniature air stations, negative oxygen ion monitoring stations, automatic noise monitoring stations, and air quality detection systems are the key R & D enterprises. In the sustainable development, Biye Qianli has established long-term, extensive and in-depth cooperative relationships with well-known domestic universities, industry associations, and cross-border well-known enterprises, and conducts regular exchanges and learning. There are companies in the north and the south, with headquarters in Shenzhen. The company has integrated air detection, Internet of Things, big data and cloud computing, artificial intelligence analysis, communication technology, micro-xin programs, large screen displays, and client-related technologies to form The solution in the field of smart environmental protection monitoring.

Background of the refined fixed-source VOCs concentration monitoring and early warning system scheme background:

In recent years, as air pollution has become more and more serious, smog has become a high-frequency word for discussions among people after a meal. VOCs (volatile organic compounds, volatile organic compounds) are one of the haze component particles.

According to the calculation of the Ministry of Environmental Protection, China, as a major manufacturing country in the world, emits more than 30 million tons of VOCs every year, ranking first in the world, and the anthropogenic source VOCs emissions show a rapid growth trend, which has a greater impact on regional composite air pollution. . International experience shows that controlling VOCs emissions is an effective measure to reduce haze and photochemical smog pollution.

Considering that the anthropogenic emissions of domestic VOCs are higher than natural sources, and are mainly concentrated in economically developed and densely populated areas, and that the anthropogenic sources of VOCs anthropogenic pollution are complex, not only affecting the atmospheric environment, but also directly or potentially harming human health, The monitoring and management of man-made VOCs in China is imminent.

Controlling the emission of volatile organic compounds (VOCs) is one of the effective means to reduce PM2.5, reduce haze weather and photochemical smog pollution, and improve the quality of regional urban atmospheric environment.

Product introduction of refined fixed source VOCs concentration monitoring and early warning system solution

VOCs online alarm monitoring system is applied to the detection of VOC gas concentration and VOC gas concentration exceeding alarm. It can accurately detect the VOC gas concentration and display the real-time concentration value of VOC gas in the field, exceeding the standard audible and visual alarms. It adopts wireless monitoring technology, and grids the fine layout Full-time monitoring of air pollution in all weather, to achieve full coverage of air pollution monitoring factors in the region, standard signal output, with the advantages of stable signal, high sensitivity and high accuracy. Intervals, to monitor fugitive emissions or whether there are significant abnormal concentration concentrations in open areas. They are mainly used for leakage warning and environmental monitoring, and monitoring of pollution emissions at the plant boundary.

Product features of refined fixed source VOCs concentration monitoring and early warning system solution:

(1) Explosion-proof, lightning-proof, anti-static, anti-reverse design, anti-EMI, EMC electromagnetic interference, anti-pulse surge current impact;

(2) Comply with the latest national standards and obtain CPA measuring instrument type assessment, explosion-proof certification and other qualifications, CCEP environmental protection certification;

(3) High system integration, small size and easy installation;

(4) Multi-stage pretreatment to reduce environmental interference;

(5) Automatically store data, the storage interval can be customized;

(6) Large LCD display, touch operation;

(7) Multi-stage pretreatment to extend equipment life;

(8) Built-in high-power suction pump, wider monitoring range;

(9) Display the real-time data curve wireless output transmission unit (DTU), the data can be linked with the Environmental Protection Agency;

Working principle of refined fixed source VOCs concentration monitoring and early warning system scheme:

(1) Three-wire or four-wire 4-20mA standard signal output, voltage output, two groups of relay switching values;

(2) It also has standard RS485 output (RTU format), and sound and light alarm on site;

(3) Optional wired transmission, LAN, Internet, wireless transmission (2 km, 5 km, unlimited distance), wireless transmission

Modes can be selected from 433, GPRS, WIFI, and other modes;

(4) The standard infrared remote control can be operated without opening the cover in dangerous situations. The remote control distance is 15 meters, which is simple and practical;

(5) Can communicate with the computer, monitor the concentration of the field probe in real time through the host computer on the computer and store it on the computer and

Analyze and print data;

(6) The units can be switched to each other, and the zero point is automatically tracked to prevent drift, and multi-level calibration. Support for OEM or ODM custom services.

(7) Detection principle: high precision PID photoion (or electrochemical principle)

2, VOCs online alarm monitoring system product parameter table, use performance and material description

Detection gas: VOC gas;

(2) Detection principle: high-precision PID photoion (or electrochemical principle);

(3) Detection range: 0 ～ 10, 100, 1000, 10000ppm, 100% LEL, 100% Vol, other ranges can be customized;

(4) Resolution: 0.01ppm (0 to 100 ppm); 0.1ppm (0 to 1000 ppm); 1ppm (greater than 1000ppm) 0.01% LEL, 0.01% Vol

(5) Detection method: diffusion measurement, pipeline type, flow type and pump suction type can be selected;

(6) Installation method: wall-mounted fixed installation, detection error: ≤ ± 3% (FS), higher precision can be customized;

(7) Response time: T90≤30S;

(8) Output signal: 3-wire or 4-wire 4 ~ 20mA, relay (passive or active output), bus RS485-RTU

(9) Alarm fang type: 1 or 2 passive contact (dry node) signal output and alarm point can be set, optional split sound

Light alarm working environment: atmospheric pressure ± 30%, -40 ℃ ～ + 70 ℃, higher temperature environment requires custom or optional pretreatment system;

(10) Relative humidity: ≤95% RH (non-condensing), higher humidity environment requires custom or optional pretreatment system;

(11) Working voltage: 12 ~ 30V (DC), single standard power supply is 24V, 1A or more than 1A DC switching power supply;

(12) The life of the stabilized power supply sensor: catalytic combustion 2 to 3 years, PID principle 2 to 3 years, thermal conductivity 5 years;

(13) Explosion-proof type: Explosion-proof type, explosion-proof grade Exdâ…¡CT6;

(14) Connection cable: Three-wire 4 ~ 20mA output selects three-core shielded cable, RS485 output selects four-core, and the shield layer is connected to the ground

(15) Electrical interface: 3 / 4NPT, optional 1 / 2NPT, M20X1.5;

(16) Protection level: IP65;

(17) Dimensions: 240 × 160 × 90mm or 240 × 220 × 90 (including sound and light alarm)

(18) Weight: about 1.6Kg.