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Oxygen sensors used in incubator oxygen control

Oxygen sensors used in incubator oxygen control

2024-03-22

An incubator is a device used to cultivate culture media inoculated with microorganisms under optimized controlled conditions. A key factor in establishing an ideal growth environment is a suitable oxygen content environment. The atmosphere contains approximately 21% oxygen, and the physiological oxygen concentration of cells is usually 1% to 13%. Oxygen concentration has been found to be a key environmental factor affecting stem cell growth and development. For example, in stem cell research, the value of controlling oxygen, CO₂ and temperature is gradually understood. Cells measure their oxygen levels in some way and can then adjust their needs accordingly. To maintain normal cellular function, oxygen levels must be maintained within a relatively narrow physiological range that is individually adapted to each tissue, the so-called physiological range.
Most incubators today come with optional oxygen control. Control the oxygen level in the incubator by supplying nitrogen into the culture chamber. Because some incubators consume a large amount of expensive nitrogen, some incubators will significantly increase gas consumption costs in order to control the oxygen concentration in the chamber. An oxygen sensor is a device used to measure the oxygen concentration in gas. It converts oxygen concentration into electrical signals for easy recording and analysis. The oxygen sensor in the incubator is mainly used to monitor the oxygen concentration during the gas replacement process to ensure the micro-oxygen state inside the box.
A British SST threaded high-temperature zirconia oxygen sensor (O2 sensor) from Gongcai.com - O2S-FR-T2-18C/B/A is a zirconia oxygen sensor. The sensitive element is zirconia and uses two zirconia disks. In the middle is a sealed space. One of the functions of the coil is to reversibly fill the small space with sample gas and evacuate it in turn. The other disk is used to measure the oxygen partial pressure difference ratio to obtain the corresponding sensing voltage . When the zirconia disk operates as an oxygen pump, the required temperature of 700 °C is generated by the heating element (the accompanying circuit board O21-FLEX-092 can provide heating and linear analog output. When the zirconia disk operates as an oxygen pump, the required temperature of 700°C The temperature of C is generated by the heating element (the matching circuit board O21-FLEX-092 can provide heating and linear analog output power .

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