Factors affecting the measurement accuracy of guided wave radar material level meters

Case introduction

　　What factors affect the measurement of guided wave radar level meters?

　　Statistically, factors affecting guided wave radar level meter measurements usually include the following:

• 1、Pressure and temperature factors. The level measured by the guided wave radar level meter probe is affected by pressure, so it generally cannot be installed in a pressure vessel. In addition, pressure is related to temperature: T=KP (k is a constant), so changes in pressure will affect the temperature and wave speed changes. Therefore, in practical measurements, too high temperatures can lead to measurement errors in radar level meters.
• 2、Liquid level surface fluctuation factor. In many field conditions, the vessel has a stirring function, which will increase the liquid fluctuation and affect the measurement of the radar level meter. In this case, some measures can be taken, such as appropriately reducing the speed of the mixer, so that the probe deviates from the center of the mixing, thus reducing the measurement impact of the mixer. In addition, static piping can be installed to effectively eliminate the factors affecting the level measurement of the instrument.
• 3、Blind factor guided wave radar level meter utilizes the transmitting antenna on the instrument to send out high frequency radar waves. Due to the influence of transmitting frequency, beam angle, measuring accuracy and installation conditions, it is easy to form near-end reflections and interference, so it is necessary to set up a certain blind spot to eliminate interference waves.