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The difference between guided wave radar level transducer and high frequency radar level sensor

March 04, 2020

Analyzing the difference between the guided wave radar level transducer and the high-frequency radar level transducer not only allows us to choose the radar level sensor reasonably, but also allows us to understand how to maintain the radar level sensor. In fact, based on the feedback from most people and my personal opinion, I think there are several differences between them.

1. Guided wave radar level transducer is contact measurement. While high-frequency radar level sensor is non contact measurement.

2. Guided radar wave is relatively stable when the signal is propagated along the probe. 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. It can be applied to Low dielectric constant. High-frequency radar is suitable for working conditions with dielectric permittivity higher than 1.4.

3. Guided wave radar level transducer should also consider the force of the probe (cable). Due to the force, the measurement distance of the guided wave radar will not be very long. Suitable for small range, while high frequency radar is suitable for large range tanks maxium up to 60m.

4. The high-frequency radar level sensor is trumpet-shaped, while the guided wave radar has a probe.

Although guided wave radar level transducer and high-frequency radar level sensor have their own characteristics, guided wave radar level transducer has obvious advantages in some special conditions, such as tank agitation and large medium fluctuations. In such conditions, guided wave radar which fixed at the bottom, provides more stable measured value than the alternative radar. There is also a level measurement in a small tank appliction, due to the small installation measurement space (or more interference in the tank), ordinary radars are not suitable. At this time, the advantages of guided wave radar level transducer become apparent.

 

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