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Radar level gauges also have false echoes in more complex working conditions
2012-3-23 9:47:17

最大的特点是在恶劣条件下功效显著。 The biggest feature of the radar level gauge is that it is effective in harsh conditions. It can measure whether it is a toxic or corrosive medium, or whether it is a solid, liquid or dusty, slurry medium. In terms of measurement, it has the following characteristics:
1. Continuous and accurate measurement is not affected by the environment due to the characteristics of electromagnetic waves. Therefore, its measurement applications are relatively wide. The probe of the radar level gauge has no contact with the surface of the medium, which is a non-contact measurement, which can accurately and quickly measure different media. The probe is hardly affected by temperature, pressure, gas, etc. (the effect is only 0.018% at 500 ° C and 0.8% at 50bar). 2.It has the function of suppressing the interference echo. For example, the interference echo caused by the joints in the beam range and the interference echo caused by the noise of the input or output can be automatically suppressed by the internal fuzzy logic control. 3. Accurate and safe energy saving The radar level gauge can measure under vacuum and pressure, and it is accurate, safe and reliable. It can be applied to various occasions without any restrictions. The radar level gauge uses materials that are chemically and mechanically stable, and the materials can be recycled, which is highly environmentally friendly. 4. It is maintenance-free and highly reliable. The microwave is almost undisturbed and does not directly contact the measurement medium. It can be used in almost all occasions, such as vacuum measurement, liquid level measurement, or material level measurement. Due to the use of advanced materials, it is durable against extremely complicated chemical and physical conditions, and it can provide accurate and long-term stable analog or digital level signals. 5. Convenient maintenance and simple operation. The radar level gauge has fault alarm and self-diagnosis functions. According to the error code analysis indicated by the operation display module, the fault is determined in time to be eliminated, which makes the maintenance and calibration more convenient and accurate, and guarantees the normal operation of the instrument. 6. It has a wide range of applications. It can measure almost all media. From the shape of the tank body, the radar level gauge can measure the liquid level of spherical tanks, horizontal tanks, cylindrical tanks, cylindrical cone tanks, etc .; from the tank body. Functionally, it can measure the liquid level in storage tanks, buffer tanks, microwave tubes, bypass pipes; from the measured medium, it can measure liquids, particles, slurry, etc.


的应用 Application of radar level gauge

1. Installation precautions
(1) The antenna is parallel to the wall of the measuring slot, which is good for microwave propagation. (2) The distance between the installation position and the groove wall should be greater than 30cm, so as to avoid false signals on the groove wall from being mistakenly echo signals. (3) Try to avoid interference sources such as the cutting area, agitator, etc., so that there are no fixed objects in the beam range, and improve the credibility of the signal. Radar level gauge is a new type of liquid level instrument that realizes the function of level measurement through the application of radar technology. The radar level gauge can achieve the purpose of judging the liquid level by transmitting extremely short microwave pulse signals with extremely low energy, and by receiving the reflected signals with the antenna system.

所发射的雷达波是以光速运行,在对雷达波运行时间的计算后,就可以得出液面所处的高度位置,也就是将雷达波信号转换成了液位信号。 The radar wave emitted by the radar level gauge runs at the speed of light. After calculating the running time of the radar wave, the height position of the liquid surface can be obtained, that is, the radar wave signal is converted into a liquid level signal. The principle of the radar level gauge guarantees short measurement time, accurate results, and good stability during operation. The radar level gauge also has the problem of false echoes in a more complex working environment. This requires the corresponding microprocessing technology and debugging software to analyze the echoes and determine the authenticity of the echoes, thereby Actually judge the height value of the liquid level. Radar level gauge is a non-contact level gauge that can be used to measure various liquid media without being affected by physical factors such as density, concentration, temperature, etc. of the liquid medium, and can be used for some non-volatile corrosion Measurement of sexual media. At the same time, the radar level gauge has good adaptability to the temperature and pressure of the surrounding working environment and can be used for measurement in harsh environments such as high temperature and high pressure. The radar level gauge measurement is based on the action of radar waves, and the transmission of radar waves is not affected by the media, which can adapt to the measurement environment of dense fog and steam, and can be used for the measurement of volatile liquid media. The radar level gauge is an integrated design level gauge. There are no moving parts inside, no mechanical wear during operation, and a long service life.