Guided wave radar level gauge

Today we will learn the little knowledge of guided wave radar level gauge. The following is about the principle and characteristics of guided wave radar level gauge, as well as the difference between radar level gauge and guided wave radar level gauge, which are easy to confuse. .　　 Principle of guided wave radar level gauge: 　　 Guided wave radar level gauge is a measuring instrument based on the principle of time travel. The radar wave runs at the speed of light, and the running time can be converted into a level signal by electronic components. The probe sends out high-frequency pulses and propagates along the cable probe. When the pulses meet the surface of the material, they are reflected back and received by the receiver in the meter, and the distance signal is converted into a level signal. Features of Guided Wave Radar Level Meter 1. It has a strong ability to suppress steam and foam, and the measurement is not affected; 　　 2. It is not affected by the density of liquid, the degree of looseness of solid materials, temperature, and dust during feeding; 　　 3. Low maintenance, high performance, high precision, high reliability and long service life.　　 Is there any difference between a radar level gauge and a guided wave radar level gauge? The main differences are as follows.　　 Difference 1: Different contact methods 　　 The radar level gauge is non-contact type, while the waveguide type level gauge is contact type. That is to say, the pilot type cannot be used in the occasions with higher food grade requirements.　　Difference 2: Different working conditions of the medium are used. 　　 Guided wave radar level gauges need to consider the corrosiveness and adhesion of the medium, and it is more difficult to install and maintain a long guided wave radar. In low dielectric constant conditions, the measurement principle of radar or guided wave radar is based on the difference in dielectric constant of the medium. Since the waves emitted by ordinary radars are divergent, when the dielectric constant of the medium is too low, the signal is too weak to measure. Stable, while the guided wave radar wave propagates along the probe relatively stable signal. In addition, the general guided wave radar also has a bottom detection function, which can be corrected according to the measured value of the bottom echo signal to make the signal more stable and accurate. Difference 3: There are different types of common radars that can be used interchangeably, while guided wave radars are generally not interchangeable because the length of the probe (cable) is fixed according to the original working conditions. The selection of guided wave radars affected by this is better than that of ordinary radars. Radar trouble.　　Difference four: different measuring ranges　　Common radars are more commonly used on tanks of 30 and 40m, and they can even measure up to 60m. Guided wave radars must also consider the force of the probe (cable), which is also due to the force. Generally, the measurement distance of guided wave radar is not very long. However, guided wave radar has obvious advantages in some special working conditions, such as stirring in the tank and large fluctuations in the medium. In such working conditions, the measured value of the guided wave radar fixed at the bottom is more stable than that of the flexible radar; there are also small tanks. For level measurement, due to the small installation and measurement space (or more interferences in the tank), ordinary radars are not suitable, and the advantages of guided wave radars appear at this time.　　 difference five: different styles 　　 radar type level gauge is a bell mouth shape, while the pilot type level gauge has a probe. The two shapes are different, of course, there will be differences in some use occasions. I believe that after reading these appeals, everyone should have a basic understanding of the guided wave radar level gauge. Finally, I will add one sentence to judge whether the guided wave radar level gauge is needed at the scene and how to use the guided wave radar level gauge. Consult the technical engineer of Kaidi Sensing, so that the on-site use can be more assured.

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