Automobile associations and related agencies in various countries have formulated in-vehicle air standards and requirements in order to control the air quality in the car. World-renowned car companies have also formulated their own corporate standards to control the air quality in the car. It is also for this reason that Wewon Environmental Chambers Co., Ltd. has equipped a professional VOC online monitoring system for volatile organic compounds VOCs analysis and monitoring purpsoe for VOC formaldehyde emission test chambers.
| Equipment Name | VOC Online Monitoring System |
| Equipment Model | WEW-VOC-GP005 |
| Measurement Channel | Up to 6 sensor measurement channels |
| ①3 non-split infrared (NDIR) measurement principle sensor channels; | |
| ②3 other measurement principle sensor channels (electrochemical principle, non-dispersive infrared (NDIR) principle, PID photoion principle, catalytic combustion principle sensor channel, optional) | |
| Measuring Principle & Measuring Gas | ● Non-spectrographic infrared (NDIR) measurement principle |
| Such as carbon dioxide (CO2), methane (CH4), carbon monoxide (CO), sulfur dioxide (SO2), nitric oxide (NO) and other gases; | |
| ● Electrochemical measurement principle | |
| Such as oxygen (O2), carbon monoxide (CO), hydrogen (H2), ammonia (NH3), sulfur dioxide (SO2), hydrogen sulfide (H2S), nitrogen oxides, hydrogen fluoride, chlorine, etc. in the air; | |
| ● Non-dispersive infrared (NDIR) principle | |
| Such as carbon dioxide (CO2), methane (CH4), sulfur hexafluoride (SF6), propane (C3H8), etc.; | |
| ● PID Photoion Principle | |
| Such as VOC, TVOC, benzene, methylbenzene, xylene and other organic volatile compounds; | |
| ● Catalytic combustion principle | |
| Such as combustible gas, methane, hydrogen and other combustible gases; | |
| Measuring Range | Depending on the specific gas to be detected, the factory label shall prevail. (0-50ppm recommended) |
| 0-1ppm、5ppm、10ppm、20ppm、50ppm、100ppm、200ppm、500ppm、1000ppm、2000ppm、5000ppm、10000ppm、50000ppm、100%Lel 、0-2%Vol、5%Vol、10%Vol、30%Vol、100%Vol in optional | |
| Resolution | 0.01 ppm or 0.001ppm(0～1ppm｜0.01ppm(0～100ppm｜0.1ppm(0～1000ppm｜ 1ppm(1000ppm and Above｜ 0.1%Vol(0～100%Volor 0.01%Vol(0～100%Vol｜0.01% Lel(0～100% Lel |
| Combination | Two in one, three in one, four in one, five in one, six in one optional |
| Sensors with two-in-one configuration can be turned on or off independently to avoid gas interference and prolong sensor life | |
| Sampling Method | ①Circulation type – online continuous detection, circulation detection method; |
| ②Suction type – equipped with built-in or external air pump to realize the detection method of pump suction type (air pump optional); | |
| Installation Method | ①Desktop, rack type; |
| ②Wall-mounted installation, with mounting bracket | |
| Indication Error | ≤±3% FS (higher accuracy is required according to sensor performance) |
| Repeatability | ≤±1% |
| Zero Drift | ≤±1%(FS/ Year） |
| Response Time | ≤25 seconds , (higher requirements are based on sensor performance) |
| Recovery Time | ≤30 seconds (higher requirements based on sensor performance) |
| Preheat Time | More than 120 seconds (depending on different sensor configurations) |
| Power Supply | 220VAC +10%,-15% 50Hz ±5Hz |
| Equipment Fuse | Rated Current: 10A, Dimensions: 5mm*20mm |
| Intake Flow | (0.5~0.8L)/min(Fluctuation in traffic ≤0.02L/min |
| Environmental Pressure | 86kPa～106kPa |
| Ambient Temperature | -20℃～+55℃ Standard Conditions｜-40℃～+70℃ Min & Max Conditions |
| Environment Humidity | 10%～95%RH(no condensation |
| The Main Material | SPCC+Aluminum profile |
In order to support the development of test methods and reference materials for volatile organic compounds (VOC) emissions from building materials and furnishings, Engineering laboratory US maintains a number of environmental chambers for measuring these emissions. These VOC/formaldehyde emission test chambers can be operated at temperatures up to 120 °C for the smaller volumes and 250 °C for the larger, which can be used to accelerate the emissions process for some compounds.
GS 97014-3 calls for testing automotive interior trim in a small thermostatic emissions chamber. This instrument’s 1m3 chamber allows our VOC specialists to accommodate larger samples, such as components and subassemblies, than other methods that can only support small material specimens. GS 97014-3 Testing ATS chemists seal the specimen inside the chamber after a preconditioning period and provide a constant internal airflow to capture VOCs emitted during the test duration; they then analyze these air samples using Gas-Chromatography/Mass-Spectroscopy (GC/MS) to identify and measure any present VOCs.
| Output Signal | ①Three-wire 4-20mA current signal output, can be connected to various alarm controllers, PLC, DCS and other control systems |
| ②RS-485 digital signal output, connect RS232 adapter card to view the stored data on the computer | |
| ③4 groups of relay high and low alarm switch output, 1 public relay output: passive contact, capacity 30V 1A, 125VAC 0.5A | |
| ④Voltage signal output: 0-5V, 0-10V signal output can be set by yourself (optional) | |
| Signal Transmission Method | ①Three-core (four-core) shielded cable transmission: up to 1000 meters to 2000 meters (single core 1 square shielded cable) |
| ②Network port TCP/IP transmission: support TCP/IP protocol, network cable transmission within 90 meters, long-distance real-time transmission through networking (optional) | |
| ③Optical fiber transmission: The longest transmission distance is 20 kilometers to 40 kilometers (optical cable single-mode multi-core transmission, must be equipped with optical fiber MODEM), can be networked (optional) | |
| ④Short-distance RTU433 wireless transmission: The transmission distance is 0 to 2 kilometers, depending on the transmission power and site environment (optional) | |
| ⑤GPRS wireless transmission: no distance limit, built-in module, through mobile, China Unicom or telecom signal transmission, with SMS reminder notification function (optional) | |
| Alarm Method | External sound and light alarm, alarm sound: < 90 decibels |
| Alarm Point | A1 alarm value, A2 alarm value; TWA alarm value, STEL alarm value can be set independently |
| Controller Display | 5 inch TFT touch LCD color LCD screen, 800×480 dot matrix LCD |
| Operation Method | 5 inch LCD touch screen touch operation + key auxiliary operation |
| Equipment Button | Main interface + Lock Screen + Reset |
| Backlight | Manual, automatic when alarm |
| Direct Reading | Measured value, ambient temperature and humidity, date and time, maximum value, minimum value |
| Data Record | Automatic data storage, 1-6 sensor storage intervals can be customized, can continuously store 300,000 sets of data with date and time, optional micro TF memory card, can store more than 10 million sets of data |
| Data Download | Support USB and RS232 serial port measurement data download |
| Data Printing | Support micro portable printer serial port printing (optional) |
| Equipment Calibration | Level 2 to Level 3 target point full software calibration function, can set calibration value, one-key zero adjustment |
| Calibration Standard Gas Requirements | Zero standard gas: 99.999% N2 (nitrogen) |
| Full-scale calibration gas: 85%-110% of the full scale of the measured gas | |
| The third point calibration gas: 35%-75% of the full scale of the measured gas | |
| Protection Class | IP42 |
| Operating Mode | User mode, administrator mode 2 operating modes to choose from |
| Equipment Dimensions | Standard 19″ Chassis,W480mm×D310mm×H130mm |
| Equipment Weight | 25 KGS |
| Quality Assurance | Warranty period is one year, and the maintenance is free during the warranty period. |
Most of the volatile organic compounds in the car come from the paint after the car paint. In order to reduce the health hazards caused by the material VOC to the human body, China has vigorously developed environment-friendly paint products in recent years. , Consumption tax is levied in the production, outsourced processing and import links. Only coatings with a volatile organic compound content below 420 g/L (inclusive) in the construction state are exempt from consumption tax. 1
When the concentration of VOC is too high, it is easy to cause acute poisoning. In mild cases, headache, dizziness, cough, nausea, and vomiting may occur; in severe cases, convulsions may occur, and it will damage the human liver, kidneys, brain and nervous system. Medical research has proved that pregnant women living in the environment of volatile organic compounds have a much higher probability of fetal malformations than ordinary people, and may have an impact on the future intellectual development of their children.
| The Wewon’s volatile organic compounds (VOCs) online monitoring system is configured with up to 6 sensor measurement channels, 3 non-dispersive infrared (NDIR) measurement principle channels, 3 other measurement principle channels (electrochemical principle, non-dispersive infrared (NDIR) principle, PID photoion principle, catalytic combustion principle sensor channel optional). | Equipment Features |
| Multiple gas sensors can be opened or closed independently, effectively avoiding the cross-interference between the detected gases and prolonging the service life of the sensors. | |
| The VOCs online monitoring system is equipped with a large 5-inch touch TFT-LCD color liquid crystal control screen, which is simple and convenient to operate. | |
| The built-in filter and regulating valve can be replaced without disassembly on site, which is suitable for 24-hour online monitoring of industrial sites. | |
| Standard 19-inch chassis, rack-mounted, desktop, wall-mounted optional, suitable for various industrial site monitoring. | |
| Detailed measurement data display, measurement value, concentration unit, ambient temperature, humidity, maximum and minimum values are clearly displayed. | |
| VOC online monitoring system for volatile organic compounds VOCs analysis and monitoring using embedded 32-bit ultra-low power microprocessor, the detection error is small and the resolution is high. | |
| Built-in temp and humidity sensor, real-time display of ambient temperature and humidity. | |
| Intelligent temperature and humidity and zero point compensation algorithm, full software automatic calibration function of target points from level 2 to level 3 or above, to ensure the accuracy of the measurement results. automatically detect the working status of each sensor and components when powered on. | |
| Support free switching between PPM and mg/m3, %VOL and mg/L concentration units. | |
| Real-time data transmission, can accurately issue local and remote wireless alarm notification in various alarm methods (optional). | |
| Automatic layout according to the number of sensors. automatic data storage, storage interval can be customized, can continuously store 300,000 sets of data with date and time, optional micro TF memory card, can store more than 10 million sets of data. | |
| The short-distance wireless transmission method or the unlimited-distance GPRS wireless transmission method can transmit the real-time detection data and alarm status to the security center (optional) through the built-in wireless module function. | |
| VOC online monitoring system from Wewon Tech support USB and RS232 serial port measurement data download; support micro portable printer serial port printing. |
Wewon’s VOC monitoring system is used for environmental monitoring such as atmospheric and pollution source emissions. It is used for industrial process control of petroleum, chemical industry, power station, etc., and it is specially used for gas analysis and detection of mud logging instrument. It is used in the fields of agriculture, medical care and scientific research and experiments. Determination of gas content in various combustion tests of waste incineration and landfill. VOCs online monitoring system also can be used for air gas monitoring for public places.
| Principle of infrared gas detection. Non-dispersive infrared spectroscopy gas concentration detection technology. | Measurement Principle |
| Non-spectrographic infrared (NDIR) sensors are mostly used in the field of gas analysis as a spectral detection method. It is mainly composed of infrared light source, gas chamber, wavelength filter and infrared detector. The gas is introduced into the gas chamber by pumping, and the gas concentration is specified according to the gas. | |
| The corresponding absorption features on the infrared spectrum of the wavelengths are detected using the electro-optical modulation relationship. | |
| Because all measured gases absorb infrared radiation in a different spectral range, it is called a “fingerprint”, thus ensuring selectivity and reducing cross-interference. The processing of the signal fully considers the influence of temperature and drift, and an easy-to-use concentration signal is obtained through compensation calculation. |