HCLCommonly known as hydrochloric acid, is a common and widely used important chemical in industry. As a colorless or slightly yellowish strong acid, one of the most common uses is applied to the pickling treatment of metal surfaces. In steel manufacturing, the purity and surface smoothness of steel are improved by pickling treatment, and the corrosion resistance of steel is significantly improved. Not only that, hydrochloric acid is also very important in the application of water treatment. By adding hydrochloric acid, the alkalinity of water can be appropriately reduced and the appropriate adjustmentPHValue, in industrial wastewater treatment and drinking water purification is particularly important, to ensure that water quality meets safety standards, but also used to remove scale, cleaning boilers and other equipment, reduce costs, extend the service life of equipment; hydrochloric acid is also used in the food industry, laboratories, daily life cleaning and disinfection, etc., hydrochloric acid is a very useful substance for our lives.

Because of its wide use, its own characteristics can not be ignored. Hydrochloric acid is usually toxic, and it is harmful to human body. It has strong corrosive and irritating substances, which can not only stimulate the skin, but also cause respiratory tract damage, causing dry cough, chest tightness, rhinitis, hoarseness and other symptoms.

Relevant documents point out that different concentrations of HCL gas have different reactions to the stimulation of the human body, as follows:

       1ppmHCLHuman sense of smell can distinguish;

Greater2.5ppmToxic to the human body;

       5ppmis the highest acceptable range of the human body;

9ppm will cause the human body to produce obstacles, the highest can endure 6 hours;

10ppm will have a stimulating effect on the human body;

35ppm concentration environment, the human body can tolerate ten minutes, will cause chest tightness, hoarseness and other symptoms;

40-90ppm can endure half an hour to an hour without sequelae;

1000-1350ppm in half an hour to an hour will be dangerous to the human body;

In the 1250-1750ppm environment for half an hour to an hour, can cause human death.

Long-term exposure to low concentrations of hydrogen chloride gas can also cause chronic rhinitis, chronic bronchitis, tooth erosion and so on.

The use of hydrochloric acid gas should be carried out in a well-ventilated environment, take protective measures, wear protective masks, goggles, etc. If you accidentally inhale hydrogen chloride gas, you should leave the scene immediately and go to the fresh air to keep the respiratory tract unobstructed. Those who have difficulty breathing are given oxygen inhalation, and those who have symptoms of physical discomfort should seek medical treatment immediately.

The application of HCL in industry is also very important. Correspondingly, the sensor for detecting HCL gas leakage is also very important. It is related to the safety of operators. It can find hazards in a short time and quickly leave the scene for medical treatment. The acting Alphasense sensor is a world-class sensor research and development company. Its product characteristics are favored by all walks of life. In the industrial field, HCL electrochemical sensors are widely used, alpha Company has launched two HCL sensor products, the models are HCL-A1 and HCL-B1, as shown in Figure 1 and Figure 2 are the shapes of HCL-A1 sensors and HCL-B1 sensors. The detailed parameters are as follows:

Figure1 HCL-A1 sensor

Fig. 2 HCL-B1 sensor

    For details, please consult。