#Product Trends
Outdoor Air Quality
Solid Polymer Electrochemical Gas Sensors
UNDERSTANDING OUTDOOR AIR AND ITS IMPACT ON OUR HEALTH:
Outdoor air, also known as ambient air, is the air surrounding us outside buildings, extending from ground level to several miles above the Earth's surface. This air can be contaminated with pollutants from both natural and human-made sources, posing significant risks to human health and the environment.
WHICH POLLUTION GASES AFFECT US:
The following gases contribute to outdoor air pollution, making it crucial to measure the outdoor air quality with a gas sensor. Carbon Monoxide (CO) comes from sources such as motor vehicles, fires, cigarette smoke, and industry. Nitrogen Dioxide (NO2) is primarily emitted from motor vehicles, industry, and unflued industrial facilities. Ozone (O3), a main component of SMOG, results from the interaction between sunlight and emissions from sources like motor vehicles and industry. Total Volatile Organic Compounds (TVOC) are released by industry and motor vehicles. Particulate Matter (PM), including PM2.5, PM10, and TSP, originates from motor vehicles, wood-burning heaters, and industry. Other pollutants include lead, pollen, mold spores, and dust. Detection parameters also cover heart rate (HR), air temperature, rain, solar radiation, vapor pressure, barometric pressure, and horizontal wind speed.
OUTDOOR AIR QUALITY DETECTION SOLUTIONS:
EC Sense offers advanced outdoor air quality gas sensors and sensor modules designed to detect various harmful gases including NO2 (Nitrogen Dioxide), CO (Carbon Monoxide), SO2 (Sulfur Dioxide), O3 (Ozone), TVOC (Total Volatile Organic Compounds) and the overall Outdoor Air Quality.
These sensors are highly sensitive, with a lower detectable limit of 1 ppb/1 µg/m³ and fast response times. They are compact, long-lasting (over 3 years), require no warm-up time and exhibit no zero line drift.
The solid polymer electrochemical gas sensor together with a PCB creates an easy-to-use solution. The gas sensor modules feature multi-parameter detection, measuring gas, temperature and humidity. They offer digital signal output via UART (TTL 3.3V) or I2C and are energy-efficient with low power consumption and sleep mode, making them ideal for battery-powered and IoT applications. These modules operate in a wide temperature range from -40°C to +55°C.
PRODUCT SOLUTIONS FOR OUTDOOR AIR QUALITY ENVIRONMENTAL DETECTION:
The TB600B Gas Sensor Module, available with UART and I2C outputs, includes variants like TB600B-NO2 (detects up to 2 ppm), TB600B-SO2 (detects up to 5 ppm), TB600B-O3 (detects up to 5 ppm), TB600B-CO (detects up to 10 ppm), TB600B-TVOC (detects up to 10 ppm), and TB600B-AQI (measures up to 10 ppm). The DGM10 Dual Gas Sensor Module, with UART, I2C, and SPI outputs, allows combining two gases for detection from options including SO2 (5 ppm), TVOC (10 ppm), CO (10 ppm), NO2 (2 ppm), O3 (5 ppm), and AQI (10 ppm).
EC Sense products are typically used in smart city initiatives, outdoor city air quality monitoring, IoT big data air quality projects, and outdoor air quality small station monitoring.
EC SENSE SOLID POLYMER ELECTROCHEMICAL SENSING TECHNOLOGY:
The EC Sense solid polymer electrochemical technology is a revolutionary innovation in the field of electrochemical detection. This technology is based on the principle of electrochemical catalytic reaction, detecting the output signals of the electrochemical reactions of different gases and accurately measuring the gas concentration through the signal. The sensor is composed of three electrodes in contact with the electrolyte. A typical electrode consists of a large surface area of noble metal and other materials. The electrode, electrolyte and the surrounding air are in contact and the gas diffuses into the working electrode. Here the gas will be oxidized, this causes a current, which is proportional to the gas concentration.
