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SF6安全保障专家
专注于SF6气体检测的专业化
What is the working principle of SF6 gas using negative corona discharge detection?
发布时间：2022-05-11
来源：ydlcb 浏览次数：25次
What is the working principle of SF6 gas using negative corona discharge detection?
A: The gas extraction device will be pumped through the purification layer into the detector, and the detector will produce corona continuous discharge effect under the action of pulse high pressure. When there is SF6 or halogen gas in the measured gas, the electronegativity of SF6 gas can inhibit the corona electric field in the detection. The stronger the electronegativity in the gas and the higher the substance concentration, the more the corona discharge effect is inhibited and the corona discharge current decreases. By measuring the corona current signal that varies with the concentration of the negative gas, the concentration of the gas can be known. At the same time, the alarm has been set according to the size of the circuit signal to send out the concentration limit alarm signal.