At the beginning of the 20th century, polystyrene level measurement had been a major problem in the petrochemical industry. At that time, a domestic enterprise had used a variety of liquid level measurement instruments, the results were not satisfactory. Finally, after much research and consultation, a foreign brand of radar level meter was used, and the measurement only achieved the expected results. Today, let's take a look at what are the working conditions that need to be considered for the radar level meter to measure polystyrene in the molten state?

PS plastic (Polystyrene)

　　The dielectric constant of polystyrene is 2.8 at room temperature, but it decreases at high temperatures. When choosing a radar level meter, it is important to understand whether the polystyrene being measured is at room temperature or at high temperature. If it is high temperature, how high will it be, and what is the dielectric constant of polystyrene at this level.

　　The reason why the dielectric constant of polystyrene is so deeply investigated is that the radar waves emitted by the radar level meter are strongly influenced by the dielectric constant. The greater the dielectric constant of the measured medium, the stronger the echo signal and the more accurate the measurement. On the contrary, the dielectric constant is low to a certain degree, it will be impossible to measure the situation. So this working condition is very important.

　　In addition to the above conditions need to understand, polystyrene in the process of operation should also understand the situation. ps de volatile tank on the molten state of polystyrene in the process of operation, there will be a small amount of water vapor generated, and the medium has a fairly strong adhesion. For this working condition alone, the guided wave radar level meter is not suitable. Therefore, the measurement of polystyrene must pay attention to the characteristics of the operating conditions.

　　The last point, less important, but also essential. That is to know the range of the storage tank. The range of each radar level meter is not quite the same, if you do not understand clearly, the choice is not appropriate, it is likely to measure inaccurate, or even impossible to measure.

　　Polystyrene realistic conditions, far more complex than the above, where the procurement needs of users, I recommend that we observe more of their own working conditions, if necessary, consult a knowledgeable engineer, so that the later will not be a variety of problems.