Buy acidity meter, ph meter must master the knowledge
(1) according to the classification of applications: can be divided into the pen type PH meter, portable PH meter, PH meter laboratory PH meter and industry, etc. Pen type pH meter is mainly used to replace the function of the pH paper, has the characteristics of low accuracy, easy to use. Portable pH meter is mainly used in field and field test, to demand higher precision and perfect function.
(2)according to the instrument accuracy of classification: can be divided into class 0.2, 0.1, 0.1, 0.01 and 0.001 magnitude, the smaller the number, the higher the precision.
(3) according to the classification of reading instruction: can be divided into and digital display type two kinds. pH meter is now rarely used, but the instrument can display the data process of continuous change, so there are used in the titration analysis.
(4) categories: depending on the type of components can be divided into the transistor, integrated circuit and single chip microcomputer, is now more and more application of microcomputer chip, greatly reducing the volume and unit cost; But the chip development cost is very expensive.
PH meter laboratory: the laboratory pH meter is a kind of desktop precision analysis instruments, require high precision, complete functions, including printing, data processing and so on.
PH meter: industrial pH meter is used for continuous measurement of industrial process, not only must have the measurement display function, but also has alarm and control functions, and installation, cleaning, anti-jamming and so on consideration of the problem.