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本文独特地运用改变紫外灯灯电流的方法,研制成功了标准臭氧发生器,其浓度在0.5～1.5ppm范围连续可调,并可直接数字显示,相对误差小于±3％。目前国内外尚未见采用此法。文中重点讨论了灯电流与所产生臭氧浓度的关系和温度、湿度、空气流量等因素对产生的臭氧浓度的影响,以及解决这些影响因素的具体措施。较详细地阐述了紫外灯的恒电流电路、紫外灯启动电路、温度控制电路以及调换新灯时仪器的校正电路等。仪器性能良好,结果满意,使用方便,为臭氧的分析监测及臭氧测定仪的自动校正提供了理想的标准源。
In this paper, a unique method of changing the current of UV lamp is developed. The standard ozone generator has been successfully developed. Its concentration is continuously adjustable in the range of 0.5 ~ 1.5ppm and can be directly displayed digitally. The relative error is less than ± 3%. At present, this method has not been adopted at home and abroad. The paper focuses on the relationship between the lamp current and the concentration of ozone generated and the influence of temperature, humidity and air flow on the concentration of ozone produced, as well as the concrete measures to solve these influencing factors. More elaborate on the UV lamp constant current circuit, UV lamp start-up circuit, temperature control circuit and the exchange of new lights when the instrument calibration circuit. Instrument performance is good, the results are satisfactory, easy to use, for the analysis of ozone monitoring and ozone analyzer automatic calibration provides an ideal source of standards.