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Gases to be detected	Arbitrary combination of 1 ~ 4 types of gases such as toxic gases, oxygen gas, carbon dioxide, inflammable and explosive gases, TVOC, and so on. Optional configuration: temperature and humidity measurements.
Application scenarios	All the cases which requires the portable rapid detection of gas concentrations such as petroleum, chemical, pharmaceutical, environmental protection, combustion gas distribution, warehousing, smoke gas analysis, air governance, and so on.
Detection range	0 ~ 1, 10, 100, 1000, 5000, 50000, 100000ppm, 200 mg/L, 100%LEL, 20%, 50%, 100%Vol, can be selected; and other ranges can be customized.
Resolution	0.01ppm or 0.001ppm (0 ~ 10 ppm); 0.01ppm (0 ~ 100 ppm), 0.1ppm (0 ~ 1000 ppm), 1ppm (0 ~ 10000 ppm or more), 0.01 mg/l (0 ~ 200 mg/l), 0.1% LEL, 0.01%LEL 0.001% Vol
Detection principle	Electrochemical, catalytic combustion, infrared, thermal conductivity,PID photoionization, and so on. Depending on the type of gas, range, field environment and user demand.
Sensor service life	Electrochemical principle: 2 ~ 3 years; Oxygen gas: 2 years or 6 years can be selected; Infrared principle: 5 ~ 10 years; Catalytic combustion: 3 years; Thermal conductivity: 5 years; PID photoionization: 2 ~ 3 years.
Allowable error	≤±3% F.S (other precision levels can be customized)
Working environment	Temperature: -40 ºC ~ + 70 ºC, humidity: ≤10 ~ 95% RH, and built-in filters can be used in high humidity or high dust environment.

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Petroleum, chemical, pharmaceutical, environmental protection, gas distribution, flue gas analysis, air treatment and all other occasions that need to detect and analyze gas concentration.

HiYi Techonology is a professional company of committed to the development of the gas detection industry, has more than 15-year experience in specializing in the research, development, manufacture and sale of gas detectors.

With the strong technical force and economic strength, company is constantly developing new products with the international advanced technology level.

We are ready for supplying professional and exact technical service and designing projects to meet local customer's needs. The independent technology from sensors to detectors enables us to afford one-stop gas detection solution service all over the world.

We always concentrate on enhancing the communication with customers, developing international cooperation, and participating in the international competition by attending many professional exhibitions all over the world ever year.

Our products can be divided into High-end Laser Methane Detector，Domestic Gas Alarms, Portable Gas Detectors, Industrial Fixed Systems, Gas analyzers, as well as gas sensors and key elements for gas detection. The products have obtained the certificates of CE, TUV, ATEX, and RoHS, and are widely used in industrial fields.

Around IOT industry, we will combine sensors, intelligent terminal, communication technology, cloud computing and geographic information IOT technology together closely, establish a complete IOT industry chain.

We are focus on the customer value oriented, combine treatment of environmental protection with energy saving technology, provide perfect solutions for smart city, production safety, environmental protection, health of the people's livelihood. Creating value for customers is our forever pursuit.

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