HOTLINE 0086-29-88606479
  Tel: 86-29-88606479   E-mail: sales@dechuang-auto.com

NEWS

About us

Factors that should be considered when designing signal processing of radar level meter

DATE: 2020-09-01
BROWSE TIMES: 164

The radar level meter is a very practical level measurement tool. In the actual industrial application site, there will be many non-ideal situations. When designing the signal processing method for the radar level meter, the following five factors must be considered:


1. The application occasions of radar level meters are often confined narrow spaces, rather than open huge spaces. The signal emitted by the radar level meter is an electromagnetic wave, which diverges in space and has all the characteristics of electromagnetic waves, such as reflection, diffraction, and refraction. Any object in the propagation space will produce signal reflection. A small space will produce many reflected signals, including direct reflection signals on the surface of an object, and back and forth reflections and oscillations (multiple reflections between surfaces).


2. When the height of the liquid level is different, it means that the shape of the measurement space is constantly changing, and the reflection and oscillation of the signal are also different. Especially when the measuring space has a curved surface, such as a dome-top tank, a spherical container or a horizontal elliptical tank, since the curved surface has a focusing effect on electromagnetic waves, the height change of the liquid level has a greater impact on the reflection.


3. After the radar level meter is installed and put into use, the space surface conditions of the application occasions are constantly changing. Taking the reaction tank as an example, there are various media to be measured in the chemical process, and the liquid level will change when the material is fed, such as material adhesion, changes in the physical or chemical properties of the tank body surface, etc. These changes will inevitably affect reflection The strength of the signal.


4. The medium of some application sites will directly affect the transmission and reception of radar waves. On the one hand, it is manifested in the impact on the antenna. If steam condenses on the surface of the antenna, the material crystallizes on the surface of the antenna. On the other hand, the volatilization or atomization of the medium in the tank will also affect the propagation of radar waves, which will affect the measurement.


5. The measured liquid level also has a variety of changes, such as a mirror when it is still; when the liquid level changes, the surface will fluctuate; sometimes there may be bubbles. Under different circumstances, the multiple reflections of the signal will change.


Share to
RELATED NEWS / News More
  • Number of clicks: 30
    2021 - 04 - 08
    The 80Ghz radar level meter is used in the measurement of organic liquids. The reactor contains multiple layers of stirring and has a small range; after repeated tests, the 80Ghz FMCW radar level meter has always had a stable measurement effect and accurate data, which has won the satisfaction of end users .
  • Number of clicks: 1
    2021 - 04 - 06
    1. 1 Description of productsElectromagnetic flow meter is a kind of inductional instrument designed by Faradays' law of electromagnetic induction to measure flow of conductive media in the tube. It adopts the technology of insertion of single chip to realize digital excitation and employs CAN local fieldbus.Electromagnetic flow meter can realize local indication and output electrical current signal of 4-20mA which can be used to record, adjust and control. Electromagnetic flow meters are widely used in industrial sectors such as chemical industry, environmental protection, metallurgy, pharmaceutical, paper making, water supply and removal etc.Besides measuring flow of general conductive liquid electromagnetic flow meter can measure flow of liquid-solid fluid, high-viscosity fluid ...
  • Number of clicks: 101
    2021 - 04 - 01
    Common problems of radar level transmitter Radar level transmitter are mainly installed in various metal and non-metal containers or pipelines to perform non-contact continuous measurement of the level of liquids, slurries and particles. It is also suitable for occasions with dust, inert gas and steam. The radar level transmitter has the characteristics of safety, cleanliness, high precision, long life, stable and reliable, convenient installation and maintenance, and simple reading. Because there are no moving parts, maintenance is minimal, but some minor faults will inevitably occur during use. Here is a breakdown analysis and countermeasures for everyone.1. If an alarm occurs when the liquid level is within the applicable range, then:a. When the liquid leve...
  • Number of clicks: 193
    2021 - 03 - 30
    Radar level meter is a common product type of level meter, which has the advantages of accurate measurement, stable performance, high reliability, easy maintenance, and wide application range. It can be installed in various metal and non-metal containers or tanks to measure the level of liquid, slurry and granular materials. So, under what special conditions will it be installed?1. Selection under the condition of stirringIn a tank with stirring, guided wave radar level gauges are generally not used. The strength of stirring can easily bring the cable of the guided wave radar into the stirring device, or bend the rod of the guided wave radar. So you can only choose non-contact measurement of FM or high-frequency horn-mouth radar level meter to measure.2. Selection under vacuum conditionsUn...
  • Number of clicks: 103
    2021 - 03 - 25
    Radar level meter measures ammonia in a fertilizer plant Ammonia refers to an aqueous solution of ammonia with a strong pungent odor and weak alkaline. Store in a cool, dry, ventilated place, away from fire and heat. Avoid direct sunlight and keep the container tightly closed. It should be stored separately from acids, metal powders, etc. Open-air storage tanks must have cooling measures in summer. Ammonia is often used in agricultural fertilizers, in the chemical industry for the manufacture of various ammonium salts, aminating agents for organic synthesis, and catalysts for the production of thermosetting phenolic resins. In the textile industry, it is used in wool spinning, silk, printing and dyeing industries, for washing wool, woolen cloth, grey cloth, oil stains, dyein...
Email:sales@dechuang-auto.com
Adress:
Tel:86-29 88606479
Fax: 86-29 88385903
B203, Gazelle Valley, No.69 Jinye Rd, Hi-tech zone, Xi'an, Shaanxi Province, P.R.China. 710077
Copyright ©2018 - 2019 Dechuang Electrical Technology Co., Ltd SITEMAP
Rhino Cloud Provides Enterprise Cloud Services
犀牛云提供云计算服务