Acidity is the most important parameter in liquid analysis and control. The pH scale has become popular with the discovery of pH glass electrode and the invention of commercially successful electronic pH meter in 1934 by Prof. Arnold O. Beckman. pH glass electrode is still the most widely used pH sensor in various industries for process control. ISFET, however, is emerging as the new sensing technology in specific applications. The instrumentation of pH measurement has passed the electronic tube era, through the revolution of semiconductor electronics. Today, the pH sensor is much more robust and accurate. With built-in intelligence of the instrument, the pH measurement also has become easier and more reliable.
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机译：酸度是液体分析和控制中最重要的参数。 PH标度在1934年由Arnold O. Beckman教授举行的PH玻璃电极和商业成功电子pH计的发明。 PH玻璃电极仍是各种行业使用的最广泛使用的pH传感器，用于过程控制。然而，ISFET正在成为特定应用中的新传感技术。 pH测量的仪器通过半导体电子器件的旋转来通过电子管时代。如今，pH传感器更加坚固，准确。随着仪器的内置智能，pH测量也变得更容易且更可靠。
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