Freon is generally defined as a saturated hydrocarbon halide，UsuallyCan be divided into CFC, HCFC, HFC and so onA fewClass，它Is a colorless gas or volatile liquid at room temperature, tasteless or slight odor, non-toxic or low toxicity, chemical stability. Different Freon has different properties, its flammability, toxicity and the number of chlorine, fluorine, hydrogen atoms in the molecule.Freon leakage is a serious threat to our life safety and living environment, which can be summarized as follows:

1. Freon itself is non-toxic, when it is mixed with air to a certain concentration, accidents will occur, causing suffocation, death or serious injury. After the human body inhales too much, there will be a state of hypoxia, and in severe cases, there may be varying degrees of hypoxemia and hypercapnia at any time, resulting in respiratory insufficiency. Inhalation too much and for too long can inhibit respiratory function, leading to coma and even death.

2. Freon can quickly decompose phosgene, nitrofluoric acid, hydrochloric acid, chlorine, carbon monoxide and so on. Eye contact with its gas and liquid will be strongly stimulated, pain, swelling, tears, liquid Freon splashed on the skin will make the skin dry, wrinkled, swollen, inflamed and other hazards.

3. Freon will destroy the ozone in the atmosphere and decompose it, resulting in the sun's ultraviolet radiation can not be filtered and weakened, causing great harm to the human body and the environment. Excessive emissions of Freon can lead to global greenhouse effect, breaking the ecological balance.

At present, air conditioners mainly use two kinds of refrigerants, one is Freon R22, which is a clear refrigerant to be eliminated and has a strong destructive power to the atmospheric ozone layer.；Another kind of Freon R410A, is the world's current new type of environmental protection refrigerant, the atmospheric ozone layer is not broken.

Freon R22, chlorodifluoromethane, molecular formula is CHCLF2，That is, we usually refer to the destruction of the ozone layer of Freon.，It can also be used as an aerosol propellant for killing and painting, and is the basic raw material for the production of various fluorine-containing polymer compounds. R22 is a HCFC refrigerant, which will be restricted and banned due to its strong destructive effect on the atmospheric ozone layer.

Freon R410A, is a mixed refrigerant, which is composed of Freon R32 (difluoromethane) andFreonA mixture of R125 (pentafluoroethane), which is harmless to ozone, is what we usually call a "fluorine-free" refrigerant, which actually contains fluorine. But R410A is not perfect. It is a greenhouse gas, and its greenhouse effect is far greater than that of carbon dioxide, even more than R22. Therefore, the industry generally believes that R410A is only a transitional product, not a zui final solution.

Therefore, it is very necessary to detect refrigerant leakage,Launched a freon detection sensor TGS3830, the sensorYesmetal oxideSemiconductorDetectionPrinciple, for R-134a, R22、R410ASuch as refrigerant has good sensitivity,hasQuick responseHigh sensitivity、Simple to use,Long-term stability，Low cost characteristics.

Freon detection sensor TGS3830Important parameters:

Typical detection object: R-134a, R-22Wait

Detection range: 5-100ppm

Heating voltage VH：0.8V±3%

Loop voltage VC:5.0V DC Max

Heating power consumption PH：About 100mW

Load resistance RL：10KΩ Min

Preheating time: 1 hour

TGS3830 is a Freon sensor imported from Japan, which has the advantages of small size and low power consumption,Ideal for portable refrigerant leak detectors.