Accuracy of radar level gauge
Huachuang measurement and control Huachuang measurement and Control Technology Co., Ltd 2023-05-26 11:58
In recent years, the radar level gauge has been applied more and more widely, and has been favored by the majority of customers and friends. So, does this represent our radar level gauge measuring accuracy also reached international technical level?
In fact, according to the present situation of production technology and the degree of development of instrument industry in our country, there is still some gap with the international level. Because of this, it is necessary to deepen the cognition of radar level gauge, find the gap on the basis of real understanding of the product and further innovate and improve.
Therefore, the expert introduced that the measurement accuracy of radar level meter, radar level meter measurement range from the beam to hit the low point of the tank calculation, but in special circumstances, if the tank bottom is concave or conical, when the level below this point can not be measured. In addition, if the medium is low dielectric constant, the bottom of the tank will be visible when it is at a low liquid level. In order to ensure the measurement accuracy, it is recommended to set the zero point at a position with a low height of C.
Theoretically, it is possible to reach the tip of the antenna, but considering the effects of corrosion and adhesion, the final value of the measurement range should be at least 100mm from the tip of the antenna. After clearing the measurement of radar level meter, let's understand what requirements are there for the installation of radar level meter:
1. Recommended distance (1) from the wall to the outer wall where the stub is installed.
2. The distance from the tank wall is 1/6 of the diameter of the tank, and the minimum distance is 200mm.
3. It cannot be installed above the feeding port (4).
4. If the distance between the instrument and the tank wall is not maintained, the media on the tank wall will adhere to cause false echoes. False echoes should be stored when debugging the instrument.
The absolute amount of error of the general standard of the accuracy of radar level gauge:
Measurement level: 0.5mm, 1mm (the radar of this grade has higher parameters obviously)
Monitoring level: 3mm
Process level: 5mm, 10mm.
High precision radar, to use communication to fully retain the accuracy, because the accuracy of the current signal to 1/1000 is good, such as 10m range, 1/1000 is 1cm, less than 1cm accuracy will be submerged in the signal.
South of Puhui Street, west of Guangsheng East Road, High tech Zone, Fengnan District, Tangshan City, Hebei Province
Technical support: PanGu