Level measurement is a vital part of the industrial process for monitoring and controlling the storage and transport of raw materials, intermediate and finished products.

Radar level meter and laser level meter are two widely used level measurement devices, which have significant differences in measurement principle, application scope, advantages and disadvantages. In this paper, we will discuss the characteristics of these two types of level meters in detail, in order to help readers better understand and select the appropriate measurement equipment.

Radar level meter adopts microwave pulse technology to measure the level by transmitting high-frequency electromagnetic wave and receiving the reflected signal back. Radar level meter has the advantages of non-contact measurement, high measurement accuracy and good stability. It is suitable for the measurement of various solid, liquid and powder media, including corrosive, flammable and explosive, high temperature and high pressure and other special media. In addition, the radar level meter also has strong anti-interference ability, can work stably in the complex environment. In practical applications, the measurement accuracy of radar level meter can meet the needs of most level measurement. It can be installed in various ways, such as waveguide tube, bypass tube, top mounting, etc., to adapt to different containers and working conditions. In addition, the maintenance of radar level meter is relatively simple, long service life.

A laser level meter uses the principles of reflection and refraction of a laser beam to measure level. It calculates the level by emitting a laser beam and receiving the signal reflected from the solid surface. The laser level meter has the advantages of high measurement accuracy, fast response speed and good stability. It is suitable for the measurement of various solid media, including transparent or opaque solids. In addition, the laser level meter has a long service life and low maintenance costs. In practical applications, the measurement accuracy of the laser level meter can reach ±5mm, which can meet the needs of high-precision measurement. The installation method is simple, only need to align the laser beam with the target surface. In addition, the laser level meter has a strong anti-interference ability, and can work stably in a complex environment. However, laser level meter also has some shortcomings. Firstly, for the measurement of high temperature, high pressure and other special working conditions, the laser level meter may have errors or can not work properly. Secondly, the cost of laser level meter is relatively high, which increases the investment cost of users.

In general, radar level meter and laser level meter have their own advantages and disadvantages. When choosing a suitable level meter, users need to make comprehensive consideration according to the actual needs and working conditions. Regardless of which level meter you choose, you need to pay attention to maintenance to ensure its normal operation and extend its service life.