According to the application classification: can be divided into pen PH meter, portable PH meter, laboratory PH meter and industrial PH meter.
The pen type pH meter is mainly used to replace the function of the pH test paper, and has the characteristics of low precision and convenient use.
Portable pH meters are mainly used in field and field testing methods, requiring high precision and perfect functions.
According to the instrument accuracy classification: can be divided into 0.2, 0.1, 0.02, 0.01 and 0.001, the smaller the number, the higher the accuracy.
According to the reading indication classification: can be divided into two types: pointer type and digital display type. Pointer pH meters are now rarely used, but pointer meters are capable of displaying continuous changes in data and are therefore used in titration analysis.
According to the component type classification: can be divided into transistor type, integrated circuit type and single-chip microcomputer type, now more is the application of microcomputer chip, greatly reducing the instrument volume and stand-alone cost; but the development cost of the chip is very expensive.
Laboratory pH meter: The laboratory pH meter is a benchtop high-precision analytical instrument that requires high precision and full functionality, including printouts, data processing, and more.
Industrial pH meter: Industrial pH meter is used for continuous measurement of industrial processes, not only has measurement display function,
There are also alarm and control functions, as well as installation, cleaning, anti-jamming and other issues.
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