How to choose pH meter | Acidity meter ? Five points should be noted.
When we choose the acidity meter, we must first consider the application, choose the pen pH meter, portable acidity meter, benchtop pH meter or industrial pH meter, followed by the accuracy of the measurement needs, choose the accuracy of their own use. -200A-type pH meter is widely used in industrial, electric power, agriculture, medicine, food, research and environmental protection and other fields. The instrument is also a food factory, drinking water plant to do QS, HACCP certification in the necessary testing equipment.
We need to consider the following points when purchasing the acid timer:
1. According to the application category can be divided into: pen pH meter, portable pH meter, laboratory pH meter and industrial pH meter. Pen pH meter is mainly used to replace the function of pH test paper, with low accuracy, easy to use features.
Portable pH meter is mainly used for on-site and field measurement, requiring higher accuracy and perfect function.
The laboratory pH meter is a desktop high-precision analytical instrument that requires high precision and full functionality, including printouts, data processing, and more.
Industrial pH meters are used for the continuous measurement of industrial processes. They not only have measurement display functions but also alarm and control functions as well as installation, cleaning, anti-interference and other issues.
2.According to the accuracy classification of pH meter instrument: it can be divided into 0.2 grade, 0.1 grade, 0.05 grade, 0.01 grade, the smaller the number, the higher the precision.
3. According to the type of components: can be divided into transistor, integrated circuit and microcontroller microcomputer, more is the application of microcomputer chips, greatly reducing the size of the instrument and stand-alone costs; but the cost of the development of the chip is expensive
4 Classification according to reading instructions: can be divided into two kinds of pointer and digital display. Pointer pH meters have rarely been used, but pointer meters can show continuous changes in data and are therefore used in titration analysis.
5. Look at the pH meter has no incidental function, for example with a standard RS232 interface, there is a very important thing is that the temperature compensation is automatic
Or manual, automatic temperature compensated pH meter to be more convenient than manual temperature compensated pH meter, the price between the two you will understand it.
Remarks: pH meter | acidity meter | pH meter these three names are the same meaning, but different places or manufacturers say different.
The company specializes in producing all kinds of ph meter, welcome to consult procurement.