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Recently, we have received a lot of feedback that some users have a lot of concerns when choosing a radar level meter, such as whether this radar level meter can measure accurately, whether there is any error, and whether problems will arise during the measurement process? These worries and problems are very normal, when we buy anything, we will be most concerned about whether the core functions of the product are perfect, and whether our main demands can be met. But the problem I want to talk about today is whether the radar level meter measurement can be accurate, the key depends on the specific working conditions and the impact of factors such as installation, today we together understand the complex working conditions of the radar level meter is susceptible to what factors.
Here we analyze with the actual situation of a level transmitter manufacturer, company, which has a transit bin and a finished product warehouse. The transit bin mainly stores crushed materials and oversized recyclable materials from the sorting workshop, and the material media placed in the transit bin are mainly large grain size solid stone materials with large particle size, and the aggregate surface is not on the same level in the transit bin, but a cone protruding upwards. The dust collection device in the workshop also releases the collected dust to the output belt of the aggregate and enters the transit bin together with the aggregate, therefore, the dust density in the transit bin is high. And the finished product warehouse is a round steel plate silo, mainly used for storing finished aggregates, with loading holes in the middle of the silo roof, and sand aggregates are stored in the silo in the form of conical surface. As the cylinder is very high, the aggregate is relatively dusty even when stored in the tank. Both the transit silo and the finished product silo are relatively complex working conditions, the measurement medium is solid, the dust is relatively large, and the dielectric constant of sand and gravel is very small, so this will have a relatively large impact on the measurement work of the radar level meter.
First of all, the incorrect installation position of the vega radar level transmitter will lead to measurement deviation. The aggregate accumulation in the transit depot of this plant presents a cone shape, but the radar level meter is only installed near the outlet of the reflux belt, and the installation position is too close to the outlet of the reflux tube, and the broken material belt on both sides is too far from the outlet. The radar level meter is directly below the drop point of the reflux belt, if the distance is too close, the aggregate in the process of falling will interfere with the radar level meter and form a false reflection. In addition, the aggregate accumulation surface in the finished tank is conical, and the vertical downward installation of the horn-shaped radar antenna will also lead to small measurement values and errors. As the level meter is not full range, the warehouse may be burst. At the same time, the installation position of the radar level meter is close to the inlet, when the storage bin continues to feed, due to the interference of the material in the process of falling, the formation of false reflection wave, there are often material level jumping up and down or the measurement value dead in the highest value of the phenomenon. Secondly, there is AC interference and the voltage is too high. The factory uses high frequency pulse radar level meter, which needs 24VDC power supply. But the power supply in the site measurement is 27.2V, which is obviously not in line with the requirements, the radar level meter is a very precise instrument, the voltage is so much higher will obviously affect the measurement results. Finally, due to the dusty working condition, the dust is easy to stick, and under the influence of ambient temperature, the dust is moist and easy to clump, and the dielectric constant will increase, which will stick to the transmitting head of the radar level meter, affecting the accuracy and stability of the radar level meter measurement.
In this more complex working conditions, due to the influence of the above factors, radar level meter will have some problems, this is not the instrument itself quality problems, but the impact of environmental factors, through debugging to improve the above problems can be solved, you do not have to worry, radar level meter is a very reliable instrument, trustworthy.
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