Nine radar level meter failure causes and solutions

Case introduction

　　In this article, Supmea editorial will be radar level meter faults and the way to deal with a summary, I hope to be able to solve the problem for everyone.

• 一、Radar communication anomalies are commonly caused by malfunctioning communication equipment or component failure, which requires debugging software, testing data, checking the status of sensors, and repairing or replacing components.
• 二、Inaccurate data display:
• 　1. There are more reasons for inaccurate data display, for example, if there is a sudden power outage before the end of data storage, data display abnormality can also occur and the level meter needs to be recalibrated. Check the equipment fuse again to see if there is any problem. If there is a problem, just replace it in time.
• 　2.Check the initial settings of the radar level meter, check whether the plug-in connection of the display module is normal, if the output current is greater than 22mA, it is judged that the display module of the radar level meter is faulty and needs to be replaced in time.
• 　3.If the current is less than 3.5mA, it can be judged that the radar level meter electronic module is faulty and needs to be replaced in time.
• 三、Equipment with high temperature using a blower to cool down, if installed in a high-temperature outdoor environment, you need to do a good job of shading and rain measures, so as to achieve the effect of temperature control and moisture. The shell of radar level meter is heat-resistant, so it can measure high temperature medium. However, the internal temperature of the radar level meter will not exceed 50℃. If the temperature of the internal electronic components is too high, you can use a copper pipe to blow air against the radar head to reduce the temperature. Scientifically reduce the internal temperature of the radar level meter. Do not use ice, it will damage the equipment.
• 四、Equipment fluctuation jumps when the medium is: lime, mainly because of the dust is relatively large, in the installation of the origin of the installation of hidden dangers, no gas.
• 五、Diffuse reflection if there is no level or the level is low, it may be that there are brackets and pipes at the bottom of the test vessel, or the process generates steam, which will diffuse the radar wave, thus causing the level to fail to rise. Wait for the process to normalize, you can restart it and it will recover automatically. Diffuse reflections caused by steam will automatically recover when the temperature is normalized.
• 六、Loss of wave caused by the instrument is due to turbulence, vortex and other liquid level, thick and thick foam will lead to radar wave diffusion or absorption, and thus weak or no return wave. When measuring the level of low dielectric constant liquids, the phenomenon of wave loss often occurs due to the weak reflective ability of the liquid level. For this phenomenon, it is necessary to set more appropriate application parameters for the process characteristics of the vessel, and if there is no significant improvement, it is recommended to change the mounting location, or to replace the antenna with a larger size to enhance the echo strength.
• 七、The data fluctuation is mainly due to the agitation device in the storage tank, which will lead to fluctuations in the liquid level. Or the downstream material leads to temporary interference echo enhancement, which causes the measurement data to fluctuate up and down, you can use a larger size antenna.
• 八、Measured values have errors appear in the actual level and measured changes in the value of the same, but the values are not equal, this situation, first of all, the instrument itself is not a problem, from the principle of the device, the height of the empty tank must be accurate to ensure that the measurement is accurate and reliable, the need for real-time measurements prior to the calibration to obtain the real data. If the instrument is connected to the computer system, you need to check the instrument full scale parameters and computer data is consistent.
• 九、Antenna Staining and Crystallization The possibility of antenna staining and crystallization needs to be considered when dealing with lightly contaminated tank failures. The treatment is to wear suitable protective equipment after power failure, remove the radar and tilt it downwards to wipe away any dirt or crystals, do not damage the antenna and avoid scratching it with an iron tool to avoid damaging the antenna skin.

　　The above is a detailed introduction to the radar level meter, in a variety of level measurement instruments in a wide range of applications, maintenance is also very convenient, the measurement is more accurate, if you want to reduce the instrument failure rate, the need for selection, installation and so on should pay attention to! This article is shared here, I hope to be able to solve the problem for everyone!