In the measurement field of all walks of life, the radar level meter will be used, because of its unique advantages, but also because its accuracy is very good, but if the accuracy is affected, the effect of the product will be greatly reduced, so we need to pay more attention to welding. In order not to affect the accuracy of radar level meter measurement, we should first consider the corrosion and adhesion of the measured medium on the product, which needs to ensure that the final value of the measurement range is at least 100mm from the antenna tip. In addition, you need to pay attention to the following three aspects:
1. In the principle of overspill protection, a safe distance can be defined to attach to the blind area.
2. The minimum value of the measuring range of the radar level meter has a certain relationship with the antenna.
3. Foam can both absorb and reflect microwaves, and can be measured under certain conditions with different concentrations. In addition, since the radar sensor can be measured through the waveguide tube or by-pass tube, the inner wall of the measuring tube must be smooth. The internal diameter of the measuring tube should be consistent with the diameter of the horn as far as possible, and if the length is not enough, the measuring tube can also be extended by a pre-welded flange or welded head. At the same time, it should be very noted that when welding, no concave and convex points can be produced, and the welding can not penetrate the tube wall, otherwise it will produce a strong false echo, so that the accuracy of the radar level meter measurement is affected.