Background Introduction:

VOCs are volatile organic compounds. ASTM D3960-98 defines it as any organic compound that can participate in atmospheric photochemical reactions, so there are many types of it. VOCs can be both volatile and toxic gases, as well as flammable and explosive gases. So usually, the detection range and alarm points of VOCs gases are confirmed based on their basic chemical properties. Long term living indoors with high concentrations of VOCs can easily cause poisoning. Living indoors with VOCs can easily affect physical health, leading to loss of appetite, dizziness, coughing, drowsiness, and affecting the nervous system; VOCs can also damage the atmospheric environment, cause air pollution, and affect air quality.

due toThe potential hazards brought by VOCs, and the concentration of many types of VOCs gases is colorless, odorless, invisible, and intangible. Therefore, VOCs instruments are needed to detect them, provide feedback on monitoring values, and enable people to intuitively understand the concentration and content of VOCs in their environment.

According to the leakage detection of fixed pollution sources in industrial sitesThe demand for VOCs, OsenAccording to relevant informationChemical properties and numerous cases of VOCs gases. The conventional range for detecting VOCs from fixed pollution sources in industrial settings is generally 0-200ppm. The VOCs instrument is installed at the nearest location to the VOCs leak. When VOCs leak, the VOCs instrument can quickly detect the leaked VOCs gas and sound an alarm in a timely manner.

And testing in the factory fieldVOCs， Refer to national standards and relevant literature such as air quality monitoring and grid based atmospheric monitoring. The routine monitoring range for VOCs in the factory is 0-10ppm, using high-precision gas sensors to capture PPB level VOCs molecules in the air and provide real-time feedback on the gas concentration of VOCs in the factory.

Considering practical application, Ausen VOCs fixed pollution source monitoring instrumentIt can also be customized according to the specific needs of users, and more monitoring ranges can be customized, such as0-100ppm, 0-200ppm, 0-500ppm, 0-1000ppm, etc., with additional features such as LCD display, sound and light alarm, alarm controller, linkage equipment, monitoring software, etc.

Product Overview:

The VOCs online alarm monitoring system can accurately monitor and trace pollution sources, achieving targeted governance:

Real time monitoring of particulate matter, air four parameters, and gas-phase five parameters to determine the main factors affecting regional air quality, control key pollution sources, and achieve targeted governance.

Multi dimensional analysis of monitoring data to provide decision support for environmental pollution prevention and control:

The system provides rich data statistical analysis functions, such as data comparison and report statistics, to enhance the rapid response and disposal capabilities of environmental emergencies.

Monitoring and regulatory linkage to enhance management capabilities:

Support mobileThe APP function automatically sends short messages or alerts when data exceeds the standard, making it convenient for regulatory personnel to keep track of the air pollution situation and handle pollution incidents in a timely manner.

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;

working principle:

（1) Three wire or four wire 4-20mA standard signal output, voltage output, and 2 sets of relay switch values;

（2) Simultaneously equipped with standard bus RS485 output (RTU format) and on-site sound and light alarm;

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

Optional methods433 GPRS、WIFI、 Other methods;

（4) The standard infrared remote control can operate without opening the cover in dangerous situations, with a remote control distance of 15 meters, simple and practical;

（5) Can communicate with computers, monitor the concentration of on-site probes in real time through the upper computer, and store them on the computer

Analyze and print data;

（6) Each unit can switch to each other, automatically track the zero point to prevent drift, and perform multi-level calibration. Support OEM or ODM customization services.

（7) Detection principle: high-precision PID photoionization (or electrochemical principle)

Technical features and advantages:

The system is designed based on the demand for monitoring and managing dust pollution on urban construction sites, and its technical characteristics and advantages are mainly reflected in the following points:

（1） The monitoring terminal system integrates PM2.5, PM10,CO,SO2,NO2,O3,TVOC, Temperature,Multiple environmental parameters such as humidity, available 24/724-hour online continuous monitoring, providing air quality data of the construction site around the clock. When the alarm value is exceeded, the monitoring equipment can automatically start, with multi parameter, real-time, intelligent and other characteristics;

（2） Transmit and transmit data quickly and conveniently through the three major networks of sensor networks, wireless networks, and the Internet to update real-time monitoring data;

（3） The cloud computing based data center platform gathers monitoring data from different regions and time periods, with massive storage space for multi-dimensional and multi temporal data statistical analysis. This facilitates the orderly development of management work and also accumulates data for establishing environmental pollution control standards for construction sites, promoting long-term management of air pollution.

（4） The entire system adopts a free modular combination, which flexibly adds or reduces different monitoring items according to the requirements of unorganized pollution monitoring. At the same time, the free modular combination can replace the sensors at any time without the need for repair in the event of a core sensor failure, without affecting the normal operation of the entire equipment, solving the problem of time-consuming and costly return of traditional equipment to the factory.

Device communication method:

The data transmission of VOCs online alarm monitoring system mainly includes: Composed of GPRS data transmission network, data receiving server, and client (server and client can be the same computer).

The dust concentration data monitored by the VOCs online alarm monitoring system is sent to the receiving server through the GPRS transmission network via the Internet, and the data is automatically saved and written into the database. The client can view the data through a browser. Customers can monitor construction site dust and noise online monitoring equipment through receiving software and SMS control.

Application areas:

VOCs online monitoring technology has a wide range of applications, mainly including the rubber industry, chemical industry, pharmaceutical industry, printing industry, ink industry, spray coating industry, tobacco industry, etc.