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近几年来国内书籍杂志上已先后发表了几篇关于pH测定计的文章,述及玻璃电极的原理,玻璃电极及电子管电位计的一般性原理,以及关于商品贝克曼(Backman)pH计的原理,今年二月份又有补充说明。所缺少的是没有一个很好的具体例子,本文即欲针对此缺点,介绍一架交流直读式pH计,详细说明线路的结构,校验和修理的方法(包括一般性的修理原则)。这样,一方面供有志于自制pH计的同志作为参考,另一方面参考以下所介绍的方法,在修理一般类似的pH计时或能有所帮助。
In recent years, domestic books and magazines have published several articles on the pH meter, the principle of the glass electrode, the general principle of the glass electrode and the tube potentiometer, and the principle of the commercial Beckman pH meter February this year, there are additional instructions. What is lacking is not a very good concrete example. In this paper, we are going to introduce a direct current reading pH meter to explain the shortcomings of the line structure, calibration and repair methods (including the general principle of repair). In this way, on the one hand, comrades interested in making their own pH meter as a reference and on the other hand, referring to the methods described below, may be helpful in repairing a similar pH meter.