As an important prerequisite for PM2.5 and ozone, volatile organic compounds (VOCs) are the focus and difficulty of the battle against air pollution, VOCs emission reduction control is an important lever for winning the battle to defend the blue sky. The comprehensive remediation of VOCs has become one of the key measures for the national and regional level to win the battle to protect the blue sky.Public information shows that VOCs come from various sources, including natural and anthropogenic sources. Among them, natural sources include plants, wetlands, grasslands, and animal feces. Anthropogenic sources include industrial sources, agricultural sources, domestic sources, and mobile sources (referring to exhaust emissions from airplanes, trains, ships, gasoline vehicles, and diesel vehicles). Industrial sources are the main cause of VOCs generation.

The OSEN VOCs online monitoring and early warning system is a new VOCs online monitoring system launched by our company in combination with various industry emission standards and national and regional environmental regulations. The system adopts a suction sampling pump and is equipped with advanced PID principle sensors for detecting VOCs, exhaust gas methane total hydrocarbons, non methane total hydrocarbons, benzene, toluene, xylene and other volatile organic gas components. It provides over limit warning and synchronously measures data, which is stored locally and transmitted to government regulatory departments. The system adopts wireless monitoring technology, grid fine distribution, and comprehensive monitoring of air pollution around the clock, achieving comprehensive coverage of air pollution monitoring factors in the region. It is widely used for monitoring the emission of volatile organic gases from unorganized (factory boundary) and organized (pollution source) emissions in industrial production processes, as well as monitoring the efficiency of treatment equipment.

Product features:

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

(2) Meets the latest national standards and has obtained qualifications such as CPA measuring instrument type evaluation and explosion-proof certification, as well as CCEP environmental protection certification;

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

(4) Multi level preprocessing to reduce environmental interference;

(5) Automatically store data, with customizable storage intervals;

(6) LCD large screen display, touch operation;

(7) Multi level preprocessing to extend the service life of equipment;

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

(9) Display real-time data curve wireless output transmission unit (DTU), data can be connected to the Environmental Protection Bureau

(1) Gas detection: VOC gas;

(2) Detection principle: PID principle;

(3) Detection range: 0-1ppm, 20ppm, 50ppm, 200ppm, 2000ppm, 6000ppm, 10000ppm, 0-5mg/m3;

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

(5) Detection method: diffusion type, pump suction type;

(6) Installation method: wall mounted fixed installation;

(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 mode: 1 or 2 passive contact (dry node) signal outputs, alarm points can be set, optional split type sound

Working environment of the light alarm: atmospheric pressure ± 30%, -40 ℃~+70 ℃. Customization or optional pre-treatment system is required for use in higher temperature environments;

(10) Relative humidity: ≤ 95% RH (non condensing environment), customized or optional pre-treatment system is required for use in higher humidity environments;

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

（12）The lifespan of the voltage regulator power sensor is 2-3 years for catalytic combustion, 2-3 years for PID principle, and 5 years for thermal conductivity;

（13）Explosion proof form: Explosion proof type, explosion-proof grade Exd Ⅱ CT6;

（14）Connecting cables: Three wire 4-20mA output with three core shielded cable, RS485 output with four cores, shielding layer grounded

（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: Approximately 15Kg.