Classification of instruments

1. Industrial automation instrumentation and control system. This is generally referred to as PA and FA in foreign countries. PA is called process automation, and FA is called factory automation. Instruments and control systems used in process automation and factory automation all belong to this category, and some parts of analytical instruments and electrical instrumentation also fall into this category. 2. Scientific testing equipment. It is analytical instruments, testing machines, optical one, industrial automation instruments and control systems. This is generally referred to as PA and FA in foreign countries. PA is called process automation, and FA is called factory automation. Instruments and control systems used in process automation and factory automation all belong to this category, and some parts of analytical instruments and electrical instrumentation also fall into this category. 2. Scientific testing equipment. They are analytical instruments, testing machines, optical instruments, surveying and mapping instruments, and so on. The first type of instrumentation is used on the production line and is connected to the production line. The scientific testing instrument is independent, it is only used to take the sample to the laboratory when doing the experiment. Therefore, it is very different from the first category. 3. Commonly used instruments and meters. This mainly refers to supply instruments and other general-purpose instruments. The national standards for supply meters were only released two years ago, and we have a lot of contact with them on weekdays, such as household electricity meters and gas meters. There are also some commonly used instruments that we also classify into this category, such as weighing instruments, medical instruments, timing instruments and some commonly used optical instruments. 4. Special instruments and meters. This type of instrument is actually used in a certain field. For example, the meters for automobiles and motorcycles rise very quickly. There are automobile meters, motorcycle meters, etc., which can also be extended to the fields of agriculture, forestry, animal husbandry and fishery. .