Introduces a kind of intelligent acidity meter, and measuring principle as well as hardware circuit is given.

介绍了一种智能酸碱浓度测试仪，给出测量原理和硬件电路。

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In this paper, an intelligent acidity meter is designed which takes glass electrode as its sensor and measures acidity of solution through potentiometry.

论文设计了一台智能酸碱浓度测试仪，选用玻璃电极作传感器采用电位法测量溶液酸碱浓度。

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But those in the Korean restaurant industry questioned the idea that they have the time and means of using a pH meter and doing acidity tests.

WSJ: Restaurants: City Failing on Kimchi