Application of gas sensors in fresh air systems

The high sealing of modern residences makes life more comfortable, private and energy-saving, but carbon dioxide and water vapor produced by human breathing; formaldehyde and MOM produced by building materials, furniture, curtains, etc.; dust produced by clothes and bedding; human body, The odors generated by smoking and cooking will accumulate indoors. If you open windows for ventilation, the intensity of the outdoor wind, the temperature and humidity of the air are often not satisfactory; if good ventilation and ventilation are not provided, the indoor air will be turbid and prone to mold and mildew. Ticks appear.
Simply put, the fresh air system discharges polluted indoor air to the outdoors and sends fresh outdoor air indoors at the same time. It is an air circulation exchange system. Through air circulation and exchange, indoor air purity is achieved and human health is protected.
In short, the main functions of the fresh air system are as follows:
1. Provide fresh air. It continuously provides fresh air to the room 24 hours a day, 365 days a year. You can enjoy the fresh air of nature without opening the windows and meet the health needs of the human body.
2. Eliminate harmful gases. Effectively eliminates oil smoke odor, CO2, cigarette smell, bacteria, viruses and other unhealthy or harmful gases, which can prevent children, loved ones and the elderly at home from being harmed by second-hand smoke.
3. Mildew-proof and odor-proof. Expelling humid and dirty indoor air, eradicating odors, preventing mold and bacteria from growing, and helping to extend the service life of buildings and furniture.
4. Reduce noise pollution. No need to endure the hassle of opening windows, making the interior quieter and more comfortable.
5. Dustproof. Avoid opening windows to bring a lot of dust, effectively filter outdoor air, and ensure that it enters the room…
If the fresh air system is always running at full power , the energy consumption is still very high, and high-power operation will also bring a certain amount of noise. However, it is not appropriate to always run at low power. After all, it may cause indoor air turbidity, CO, CO2 , VOC and other gas concentrations are too high, endangering human health. Therefore, it is necessary for the fresh air system to monitor the concentration of CO, CO2, VOC and other gases in the indoor environment in real time, and adjust the operation of the fresh air system according to the concentrations of these gases, so that low energy consumption and a comfortable environment can coexist.
Shenzhen Xinshilian Technology Co., Ltd. recommends several sensors that can perfectly monitor low concentrations of CO, CO2 and VOC, while also ensuring small size and low power consumption.
CO gas sensor TGS5141       * Ultra-small
* Battery-driven
* High selectivity/repeatability for carbon monoxide
* High linear output characteristics for carbon monoxide
* Easy and easy calibration
* Long service life
* Obtained UL certification
* Meets UL2034, EN50291 and EN54 -31 requirements
The TGS5141 is a battery-driven electrochemical sensor developed by Figaro. It uses a special electrode to replace the water reservoir. Due to the removal of the water reservoir used in the TGS5042, the overall size of the TGS5141 is reduced to only the rear 10% of the size. The life span can reach more than ten years. Very suitable for monitoring CO concentration in fresh air systems.
CO2 gas sensor module CDM7162       * Small size
* Low power consumption
* High accuracy
* Single light source dual wavelength mode
CDM7162 has the characteristics of small size, low power consumption and high accuracy. It is a non-dispersive infrared (NDIR) carbon dioxide (CO2) sensor module with superior performance. The module is equipped with a pair of photodetectors and uses unique signal processing technology to achieve long-term stable output. The CDM7162 module has a simple design and can be easily connected to users’ products. It can be widely used in ventilation control to improve energy saving , indoor climate improvement, etc.
VOC gas sensor TGS2600/TGS2602       * High sensitivity to VOC and odor
* Low power consumption
* High sensitivity to polluted air
* Long service life * Simple
application circuit
* Small size
TGS2600/TGS2602 are semiconductor principle sensors developed by Figaro. The sensitive element consists of an integrated heater and a metal oxide semiconductor on an alumina substrate. If there is an object detection gas in the air, the higher the concentration of the gas, the higher the conductivity of the sensor will be. With only a simple circuit, the change in conductivity can be converted into a signal output corresponding to the gas concentration. It has high sensitivity to extremely weak air pollution gases. Very suitable for monitoring VOC pollution in fresh air systems.
The goal of Shenzhen Xinshilian Technology Co., Ltd. is to provide our customers with a complete system product solution and strong technical support, and become your partner. We are persistent and make unremitting efforts to realize our customers’ ideals.