Chlorine gas is a highly toxic gas with a pale yellow-green color at room temperature and atmospheric pressure, and it has a strong pungent odor. It is denser than air, soluble in water, easy to compress, and can be liquefied into a pale yellow-green oily liquid chlorine. As one of the main products of the chlor-alkali industry, it can be used as a strong oxidizing agent. When chlorine gas is mixed with hydrogen gas with a volume fraction of more than 5%, it may pose an explosion risk when exposed to intense light.
Chlorine gas is toxic; it mainly invades the human body through the respiratory tract and dissolves in the moisture contained in the mucous membranes, causing damage to the upper respiratory tract mucosa. Chlorine gas can undergo substitution reactions and addition reactions with organic substances to form a variety of chlorides. It can also undergo substitution reactions and addition reactions with both organic and inorganic substances to generate multiple chlorides. In the early days, chlorine gas was used as a bleaching agent in the paper and textile industries.
After chlorine gas is inhaled, it reacts with the water in the mucous membranes and respiratory tract to form hydrogen chloride and nascent oxygen. Hydrogen chloride can cause inflammatory edema, congestion, and necrosis of the upper respiratory tract mucosa; nascent oxygen has a strong oxidizing effect on tissues and can form ozone, which has a cytotoxic effect on cell protoplasm. If the chlorine concentration is too high or the exposure time is too long, it often leads to deep respiratory tract lesions, damaging the bronchioles and alveoli, and causing pneumonia and toxic pulmonary edema. The irritating effect causes local smooth muscle spasm, which aggravates ventilation disorders and worsens the state of hypoxia; after inhaling high-concentration chlorine gas, it can also stimulate the vagus nerve and cause reflex cardiac arrest. It should be noted that artificial respiration must not be performed for chlorine gas poisoning.
Places that require chlorine gas concentration detection are generally in the petrochemical industry where toxic gases exist, such as petroleum, natural gas, chemical engineering, and oil depots. To detect leakage in hazardous indoor and outdoor areas and ensure production safety and personal health, toxic gas alarms can be used to detect chlorine gas concentrations.
The principle of a toxic gas alarm is that when chlorine gas is present in the measured area, the detector converts the gas signal into a voltage signal or current signal and transmits it to the alarm instrument, which then displays the percentage concentration value of the lower explosive limit of chlorine gas. When the chlorine gas concentration exceeds the alarm set value, an audible and visual alarm signal is triggered to remind the on-duty personnel to take timely measures to avoid personal injury and property accidents.
The reason why toxic gas alarms can monitor chlorine gas content is that they contain chlorine gas sensors. When the chlorine gas sensor detects that the chlorine gas content exceeds the set range, the alarm will issue an alarm signal, allowing the staff to make timely adjustments.
Shenzhen Wuliang Sensor Technology Co., Ltd the chlorine gas sensor GS+4CL2
for CL2 content monitoring. Once the chlorine gas sensor detects that the chlorine content exceeds the set range, it can promptly issue an alarm signal, enabling relevant staff to make timely adjustments. The GS+4CL2 sensor features high resolution, good linearity, fast response speed, and strong stability. It is suitable for handheld, portable, and fixed alarm devices; it can be applied to gas detection projects in various places such as chemical plants, oil fields, and waterworks, and is widely used for chlorine gas leakage detection in industrial environments.
