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The online PH meter measures the PH value of the solution by the potential measurement method. Therefore, in addition to measuring the PH value of the solution, the working mode of the PH meter can also measure the electromotive force of the battery.
The main measuring components of an online PH meter are the glass electrode and the reference electrode. The glass electrode is sensitive to PH, while the potential of the reference electrode is stable. When these two electrodes of the PH meter are placed together in the same solution, a primary cell is formed, and the potential of this primary cell is the algebraic sum of the potentials of the glass electrode and the reference electrode.
If the reference electrode potential of the online PH meter is stable, then under the condition that the temperature remains stable, the potential change of the primary cell composed of the solution and the electrode is only related to the potential of the glass electrode, and the potential of the glass electrode depends on the PH value of the solution to be measured. Therefore, by measuring the potential change, the PH value of the PH solution can be obtained.
Online PH meters are important tools for measuring and reflecting the acidity or alkalinity of solutions. There are various models and products of PH meters, and the display methods can be either pointer display or digital display. However, no matter how the type of PH meter changes, its working principle remains the same, and its main body is a precise potentiometer.
Product features
1. White backlight, clearly visible even in the absence of light. LCD display, resistant to temperature up to 90℃ without turning black.
2. During calibration, the slope and zero point errors are displayed, and after calibration, the electrode slope is automatically displayed.
3. The RS-485 interface output provides long-distance and precise transmission, capable of simultaneously outputting (PH,℃) or (mV,℃).
4.HI/LO PH/ORP controller (PH/ Oxidation-reduction controller) PC-201C has adjustable hysteresis time, and the controller host can be set for pH or ORP.
5. Microcomputer, single-chip processing, simultaneously displaying (PH, ℃) or (mV, ℃).
6. The main unit is made in Taiwan, and the electrodes are produced by BJC Company of the United States.
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