Why Industrial In-Line pH Meters Are Calibrated Regularly

The accuracy and longevity of industrial on-line pH meters depends on the industrial on-line pH meter electrodes. The price difference is also very large, but many times it is used improperly, resulting in inaccurate measurements.

Industrial in-line pH meters need to be re-adjusted after use for a period of time, depending on the solution being measured and the frequency of use. After a period of use, the electrodes of the industrial online pH meter are asymmetric and the potential will change greatly, so regular calibration is required.

The number of industrial on-line pH meter calibrations depends on the performance of the sample, the industrial on-line pH meter, and the accuracy of the measurement. High-precision measurement (≤ ± 0103 pH), should be promptly calibrated; General accuracy measurement (≤ ± 011pH), after a calibration can be used continuously for two weeks or more. As long as the measurement shows that the pH is accurate, there is no need to calibrate the ph electrode frequently.

First test the standard solution that is closer to the measured solution, and determine if recalibration is needed based on the error size. It must be recalibrated in the following cases:

1 Replace the new industrial online pH meter electrode.

2 Industrial On-line pH meter After measuring concentrated acid solution (pH<2), or after measuring concentrated alkali solution (pH>12).

3 Industrial Inline pH Meter After measuring a fluoride-containing solution or a concentrated organic solution.

4 When the temperature of the tested solution is too large compared to the standard solution temperature (or room temperature).

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