Toxic gases can be divided into three categories: stimulating gas, asphyxiating gas, and acute toxic organic gas (VOC) according to their different mechanism of action on the human body.

The irritant gases include chlorine, phosgene, double phosgene, sulfur dioxide, nitrogen oxide, formaldehyde, ammonia, ozone and other gases. The characteristic of the irritating gas to the body is that it has strong stimulation on skin and mucosa, some of which have strong corrosion effects at the same time.

Asphyxiating gases include carbon monoxide, hydrogen sulfide, cyanohydrate, carbon dioxide and other gases. These compounds enter the body and cause hypoxia of tissue cells. It is worth mentioning that methane (CH4) can also be asphyxiating gas, which has no obvious toxicity to the body. The oxygen deficiency of tissue cells caused by methane is actually caused by the decrease of oxygen concentration in the inhaled gas. The organic solvents of acute poisoning are hexane and DILV methane.

As the above toxic gases, organic volatile compounds can also harm the respiratory system and nervous system of human body. Some of them cause cancer, such as benzene. Because most organic compounds are combustible substances, most of them have been tested for their explosive properties before, but the minimum explosion limit of organic compounds is far greater than the MAC (maximum allowable concentration in space). That is, it is necessary and necessary to detect the toxicity of organic compounds.

For various production occasions and testing requirements:

All possible situations should be taken into account when selecting the gas detector. If methane and other alkanes with less toxicity are mostly, LEL detector is the most suitable one. This is not only because the LEL detector is simple in principle and widely used, but also has the characteristics of convenient maintenance and calibration.

If there are toxic gases such as carbon monoxide and hydrogen sulfide, a specific gas detector should be selected in priority to ensure the safety of workers.

If more organic toxic and harmful gases are involved, considering that the concentration of the gas may cause poisoning is lower, such as aromatic hydrocarbons, halogenated hydrocarbons, ammonia (amine), ether, alcohol, grease, etc., multiple gas detectors should be selected, and LEL detector should not be used to cope with them, because this may cause casualties.

If the gas type covers the above several kinds of gas, it may achieve the double effect of half the effort if a composite gas detector is selected.

Oceanus has an advanced technical team, producing various types of gas detectors, air quality monitoring equipment, and providing comprehensive product support.