Radar level gauge
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There is a radar level gauge; at the beginning of measurement, its reading does not change, while the level indicated by the corresponding double-flange level gauge keeps rising. After a few minutes, the readings of both the radar level gauge and the double-flange level gauge become almost identical. What should be done in this situation, and what causes such behavior?
It’s probably due to the dead zone issue with the radar level gauge; adjusting it should fix it
Is the minimum measurement range of radar level gauges too large?
It would be best to have a diagram showing the installation location; perhaps at a low liquid level, there is a spot where something reflects the radar waves, and below that point the radar shows the same value for the liquid level
At first, if it doesn’t change, is it displayed as 0, or is it a fixed value?
I think that if the dielectric constant of the medium being measured is low, the actual measurement range of the radar becomes smaller as well. At first, the liquid level was above this measurement range, which is why accurate measurements couldn’t be taken; only when the liquid level reaches a certain height, within the radar’s measurement range, can accurate measurements be obtained Try adjusting the radar’s measurement threshold, and also reduce the echo suppression settings
Hello, the core function of a radar level gauge is to emit electromagnetic waves, and it is capable of receiving the same electromagnetic waves that are reflected back (which is what is meant by detection). After analyzing and processing these signals, it is possible to calculate the distance between the radar and the surface of the substance being measured, by comparing time and distance. In other words, from the moment the radar emits waves to the time when it receives those waves and calculates the distance, there is a delay. Additionally, some manufacturers use default waiting algorithms in their systems to prevent sudden changes in liquid level; as a result, there is a perceived time delay, which means it’s not as fast and direct as flip-type or flange-type sensors. Since the liquid level in a tank or pool cannot rise instantly, the final measurement values from the radar will eventually match those from the magnetic flap differential pressure sensor and other similar devices.
It depends on what type of radar you have – whether it is contact-type or non-contact. The zero point setting for the radar is not the same as that for the double flange setup