Radar level meters are widely used in the industrial field, especially in the tank measurement plays an important role. In this paper, we will discuss the knowledge of radar level meter in tank measurement. Radar level meter is based on microwave principle for level measurement.
It transmits microwave signals of a specific frequency, and when it encounters the material surface, the signal is reflected back and received by the receiver. Based on the time difference between transmission and reception, the height of the level can be calculated. Radar level meter has the advantages of non-contact measurement, high accuracy and high reliability.
Tanks can be divided into vertical tanks, horizontal tanks, spherical tanks, etc. according to the structure.
(1) Vertical tanks:
Vertical tanks refer to tanks set upright, relatively small capacity, commonly used for storing liquid materials. Vertical tanks are characterized by simple structure, small footprint, high height, suitable for use in places with limited space. However, due to its high height, measurement requires special attention to prevent material overflow.
(2) Horizontal tanks:
Horizontal tanks are tanks placed horizontally, relatively large capacity, commonly used in the storage of liquid and solid materials. Horizontal tanks are characterized by a relatively complex structure, large footprint, low height, suitable for use in larger sites. As it is placed horizontally, special attention needs to be paid to the measurement to prevent the accumulation of materials at the outlet.
(3) Spherical tanks:
Spherical tanks are tanks that are spherical in shape and have a large capacity, and are commonly used for storing gases and liquid materials. Spherical tanks are characterized by compact structure, small footprint, large capacity, suitable for use in places that require large-capacity storage.
Due to their spherical structure, special attention needs to be paid to prevent signal reflection and refraction from affecting the measurement.
For different types and uses of storage tanks, you need to use different radar level meter measurement program. For example, for liquid materials, you can choose waveguide tube type radar level meter or trumpet antenna radar level meter; for powder and granular materials, you can choose wear-resistant radar level meter or hose connection type radar level meter. When choosing the measurement program, you need to consider the characteristics of the material, the size and structure of the tank, the installation location and other factors.
When installing the radar level meter, you need to pay attention to the following points: determine the appropriate installation location, avoid the inlet, outlet, agitator and other interfering factors; ensure that the antenna and the surface of the material to maintain perpendicular to improve the accuracy of the measurement; for large tanks, you need to consider the antenna bracket height and stability; for the need for explosion-proof occasions, you need to choose explosion-proof radar level meter and comply with the relevant explosion-proof specifications.
In order to ensure the long-term stable operation of the radar level meter, it is necessary to carry out regular maintenance and repair. For example, regularly check the cleanliness of the antenna and bracket, whether there is wear and tear or corrosion phenomenon; regularly calibrate the instrument to ensure the accuracy of the measurement; for the mechanical parts that need to be lubricated, regularly add lubricating oil, and so on.
This paper introduces the application knowledge of radar level meters in storage tank measurement. Understanding the working principle of the radar level meter, tank types and characteristics, measurement program selection, installation precautions, and maintenance and repair, can help readers better apply this technology.
In practical application, it is necessary to choose the appropriate radar level meter according to the specific situation and install, use, and maintain it in strict accordance with the relevant specifications to ensure the measurement accuracy and normal operation of the equipment.