Flash tanks are a common chemical equipment, often used as a collection system for various condensate discharge lines, receiving high pressure condensate and exposing it to low pressure steam sources. When this happens, some of the condensed water "turns" into low-pressure steam. This steam can be recovered in other low-pressure heat exchange devices, is widely used in chemical, pharmaceutical, metallurgical and other industries, its liquid level measurement and control is very important. The measurement of the level of flash tank can choose a variety of level instruments, radar level sensor is one of them. This paper analyzes some difficulties and solutions in measuring the liquid level of flash tank with radar level gauge.

There are some difficulties in the measurement of liquid level in flash tank. First, the medium in flash tank is usually a complex multiphase flow. During the phase transformation process of the medium, such as the separation of the two phases of gas and liquid and the surge of the liquid surface will cause greater interference to the measurement of liquid level. This is a difficult point in the measurement of flash tank level sensor. Second, the liquid level of the flash tank changes rapidly, and with the change of the medium flow rate in the flash tank, the liquid level will suddenly fluctuate violently. The rapid change of liquid level measurement has a great challenge for the traditional liquid level sensor. The third flash tank internal environment is generally more complex, including high temperature and pressure, corrosion and other harsh conditions, these conditions may cause damage to the sensor and electronic components of the level sensor, thus affecting the accuracy and reliability of the level sensor. How to make the radar level sensor better measure the flash tank? First of all, it is necessary to select the appropriate radar level sensor model. In view of the difficulty of liquid level measurement, the appropriate radar level gauge model can be selected according to the specific level monitoring needs. For example, for complex multiphase flow level measurement, radar level sensor with multi-beam reflection measurement and multi-parameter calculation can be selected to improve the accuracy and stability of level measurement. Secondly, the advanced waveform algorithm can be used to measure and monitor the changes of the liquid level more, so as to ensure the accuracy and stability of the liquid level measurement. The most important point is to choose high-quality liquid level gauge equipment, for the complexity of the environment, you can use more high temperature resistance, high pressure resistance, corrosion resistance and other stronger performance of the liquid level gauge equipment to ensure the reliability and stability of liquid level monitoring.

It is not a problem to choose the appropriate radar level sensor according to the specific working conditions to measure the level of flash tank. The radar level sensor can overcome the complexity and multiphase problems in the measurement of flash tank level. To achieve high precision and high reliability monitoring and control of liquid level.