The radar level gauge is inaccurate when measuring low levels
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This post was last edited by p156 on 2016-3-1 at 12:43. It’s a radar level gauge with a measurement range of 0.4 meters to 18.6 meters; when the liquid level drops to 6.5 meters, the reading shows over 17 meters, while it functions normally when the level is above 6.5 meters. I’m looking for a solution to this issue. (The medium in the tank is asphalt, the temperature is 130 degrees, and it’s a Radara radar level gauge.) Model jevd803pdd1glmvx.)
Please describe the specific medium, temperature, radar model and manufacturer, etc.~
The steam concentration is too high; is it caused by vaporization?
We have encountered this situation as well; it is caused by water vapor in the air.
There is likely a source of interference at 6.5 meters.
What about dropping it below 6.5m? If it works normally, it indicates that an incorrect suppression was applied around 6.5m; if measurement is still not possible, it means there is too much interference – either the interference echoes at 17m are too strong, or there is steam/condensation interference.
I don’t understand; I’ll study it a bit. It seems that false echoes are causing interference. 1. Is the installation location in line with the requirements for radar installation? 2. The operating conditions need to be analyzed carefully – why is the steam level indicated as 17 meters? I think it’s possible to calculate this using the radar’s formulas. Also, I think what was said on the 7th floor is correct
When the actual liquid level is close to the bottom, use the hand controller to execute the bottom-finding function.
Thank you all! The medium in the tank is asphalt, the temperature is 130 degrees, and it’s a Radarkopf radar level gauge. Model jevd803pdd1glmvx. There is steam at the lower level, so there isn’t much interference at the higher level, right? Thank you everyone!
This issue can be resolved by creating fake echo curve records when the tank is empty. It is likely that the pipe neck at the top of the tank is too long, or there is some interference source near the top of the tank. When the liquid level is high, the reflected signals are strong, so the measurements are accurate; however, when the liquid level is low, the signal strength decreases and becomes less than that of the interference signals, resulting in values that reflect the interference signals. In most cases, the problem can be resolved as long as the hardware is not damaged. I’m not sure which brand or model of radar level gauge is being used
Radar level gauges emit radar waves in a fan shape from the top and then receive the reflected waves; if the tank is not large, using this type of gauge can result in inaccurate level readings. There is also a type that comes with a wire, with one end of the wire connected to the bottom of the tank; that type is more convenient to use. I’m not an expert in instruments, so I can only explain it this way. Please let those who are professionals explain these two types of radar level gauges.