Automatic instrument classification

There are many methods of automatic instrument classification, which can be classified according to different principles. For example, according to the energy classification used by the instrument, it can be divided into pneumatic instrument, electric instrument and hydraulic instrument (rarely seen); according to the instrument combination, it can be divided into the base instrument, unit instrument cluster and integrated control device; Forms can be divided into field instruments, panel mounted instruments and rack mounted instruments; with the flourishing development of microprocessors, according to whether the instrument has introduced microprocessors (instruments) can be divided into automated instruments and non-automated instruments.

According to the form of instrument signals can be divided into analog instruments and digital instruments and so on. The coverage of the instrument is relatively wide. Any kind of classification method cannot divide all the instruments in an orderly manner. They are infiltrated and communicate with each other. For example, the transmitter has a variety of functions, the temperature transmitter can be classified as a temperature detection instrument, the differential pressure transmitter can be classified as a flow detection instrument, the pressure transmitter can be classified as a pressure detection instrument, if the pressure measurement method is used A bit can be classified as a level detection instrument, and it is difficult to classify it exactly. It is difficult to combine the calculation and auxiliary units in the combination of Chinese and foreign units.