Sensor De Gas - Calidad Del Aire, Tp-401a - Co, Alcohol, Voc

Descripción

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TP-401A Indoor air quality sensor has many advantages such as high sensitive, low cost, long life time and low power consumption. The gas sensor is very sensitive to many air-contaminating gases (or toxic gases) of low concentrations. These gases are secondhand smoke, carbon monoxide (CO), wine (alcohol), volatiles of cosmetics, acetone, thinner, insecticide, correction fluid, benzene, formaldehyde and so on.

TP-401A Indoor air quality sensor is composed of nano-SnO2 materials doped with catalyst, which belongs to metal oxide semiconductor type of gas sensor. It has a plane structure. Resistance of gas sensor will decrease, when contaminating gases present in the air. The variation of resistance will be increased with concentration of gases. When contaminating gases are evacuated, the gas sensor re-exposes to fresh air and resistance increase to its origin state reversely. According to the variation of resistance, the sensor can monitor the extent of air contamination. For example, the resistance of gas sensor will be reduced when secondhand smoke presents indoor. And by using sample single chip microprocessor, the ventilation or air purifying instruments can be automatically turned on. Then the indoor air can be refreshed by such smart device.

TP-401A Indoor air quality sensors can be widely used in hospital, restaurant, hotel, meeting room, the waiting room of railway or bus station, club and so on. Many air-contaminates like secondhand smoke, wine, volatile of cosmetics, unusual smell of human breath always present in these occasions. The TP-401A Indoor air quality sensor is capable in managing the air purifying system to turn on smartly. TP-401A Indoor air quality sensors have potential in the application of the Internet of Things. They can be used to monitor the air quality in a particular area, and control the air quality in their internet.



Applications:

Automatic air refreshing module in air conditioner;
Exhaust fan or ventilating instrument automatic management;
Perfume sprayers;
Air purifier, plasma purification machine.


Characteristic:

Low power consumption;
Very sensitive to low concentration of contaminating gas;
Long life time, low cost;
Small size;
Easy to be used in electric circuit.


Cautions:

Require relatively clean air as an initial condition.
Long time exposure to highly polluted air can significantly weaken its sensitivity.




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