Bell shaped radar water level gauge for open channel water level monitoring. Old brands can be trusted

Description :

　　Measurement principle of radar level gauge

　　Radar level gauge is a radar level gauge based on the principle of time domain reflection (TDR). The electromagnetic pulse of the radar level gauge propagates along the steel cable or probe at the speed of light. When it encounters the surface of the measured medium, some of the pulses of the radar level gauge are reflected to form echoes and return to the pulse emitting device along the same path. The distance between the emitting device and the surface of the measured medium is proportional to the propagation time of the pulse between them, and the liquid level height is calculated.

　　Measurable medium

　　When measuring medium flow rate, instrument range, and caliber for general medium measurement, the full-scale flow rate of the radar level gauge can be selected within the range of 0.5-12m/s for measuring medium flow rate, which is relatively wide. The selection of instrument specifications (caliber) may not necessarily be the same as the process pipeline, and should be determined based on whether the measured flow range is within the flow rate range. That is, when the pipeline flow rate is too low to meet the requirements of the flow instrument or the measurement accuracy cannot be guaranteed at this flow rate, the instrument port diameter needs to be reduced to increase the flow rate inside the pipeline and obtain satisfactory measurement results.

　　With the improvement of industrial automation level, radar level gauges have been widely used in fields such as petroleum, metallurgy, and chemical engineering In the industrial production process, even small measurement errors of level gauges can cause huge economic losses, and improving the measurement accuracy of level gauges has become an urgent need.

　　When purchasing a radar level gauge, it is crucial to consider which factors to choose based on. The purpose of using a radar level gauge product is to obtain a reflected wave on the surface of the measured material, but at the same time, there is no other interference or the interference wave is small. Based on its purpose, two conclusions can be drawn: one is the impact of the environment on the transmission path of electromagnetic waves; The second is the influence of the state of the measured material surface on the reflected signal.

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