Application of American All oxygen sensor PSR-12-223 in vacuum glove box

The vacuum glove box is a laboratory equipment that fills the box with high-purity inert gas and circulates to filter out the active substances in it. It is also called a glove box, an inert gas protection box, a dry box, etc. It is mainly used to remove O2, H2O, and organic gases. It is widely used in ultra-pure environments without water, oxygen, and dust, such as: lithium-ion batteries and materials, semiconductors, supercapacitors , special lamps, laser welding, brazing, etc. This product is an ideal device for scientific experiments in colleges and universities, scientific research institutions, and corporate laboratories, and is widely used in biochemistry, metallurgy, electronics, chemical industry, geology, mining, medicine and other departments.
The principle of vacuum glove box
A vacuum glove box is a device used to handle air-sensitive substances. It can provide an oxygen-free, water vapor-free, and dust-free environment to protect experimental substances from contamination by the external environment. The following is the principle of a vacuum glove box :
1.1. Vacuum system
The vacuum glove box uses a vacuum system to maintain a low-pressure environment inside the box. The vacuum system consists of a vacuum pump, valves, and a pressure controller . When the vacuum pump is started , it draws out the air inside the glove box to create a low-pressure environment. The valve is used to adjust and control the vacuum level, and the pressure controller can monitor and adjust the pressure of the system.
1.2. Airtightness
The airtightness of the vacuum glove box is very important to prevent outside air and moisture from entering the box. The glove box is usually composed of two sealed glove box shells connected by a sealing gasket in the middle. The box shell can be made of stainless steel to ensure good airtightness. In addition, the glove box is also equipped with a viewing window so that the operator can observe the situation inside the box and keep the box environment closed.
1.3. Nitrogen environment
Vacuum glove boxes usually use nitrogen instead of air to create an oxygen-free environment. After the vacuum system has established a low-pressure environment, the operator will fill the glove box with nitrogen to keep the atmosphere inside the box pure. Nitrogen can effectively reduce oxidation and contamination of substances.
The operation of the vacuum glove box requires isolation from the air for experiments. For example, lithium metal reacts with oxygen, and some reactions need to be carried out in an inert gas such as argon. Using open (unshielded) radiation sources and protecting them with lead and lead glass is mainly to protect the experimenter from toxic chemicals.
Installing an oxygen sensor in the glove box can monitor the oxygen content in the box in real time and display the current content on the touch screen . It can interlock the oxygen sensor with the circulation fan and purifier in the glove box to achieve continuous deoxygenation when the oxygen content is high and maintain test or production conditions.
When the glove box purification system is regenerated, an oxygen sensor is used to monitor the oxygen content in the box to determine whether the oxygen content in the box is lower than 1P PM after 24 hours of purification. If the content is too high, it may be suspected that the glove box is not sealed tightly or there are other problems. Gongcai.com engineers recommend the American All oxygen sensor PSR-12-223 , which can directly replace the American Southland TO2-1X oxygen sensor. It uses micro fuel cell sensor technology and has the characteristics of high precision and long life. It is widely used in air separation units, petrochemicals, steelmaking and other fields for oxygen content testing.