A radar level gauge is a look-down time-travel measurement system used to measure the distance from a reference point (tank roof) to the liquid level surface. The antenna emits microwave pulses, which are reflected on the oil surface to be tested and received by the radar system. The microwave pulses received by the antenna are transmitted to the electronic circuit. The microprocessor processes the signals to identify the microwave pulses generated on the surface of the material. echo. It is necessary to adapt the instrument to the measurement environment by inputting the height of the empty tank, the height of full filling and some application parameters. The 4-20mA output with the HART protocol in the system is output to the computer for the display of the heavy oil level. The high-precision intelligent static pressure transmitter leads the filling pressure to the negative pressure port of the pressure transmitter, which can accurately measure the total storage pressure (or pressure difference △p), and obtain high-precision storage liquid mass and volume values . The promotion of the use of radar level gauges in oil tanks lies in the adoption of hybrid oil tank metering systems. Due to the non-contact measurement, it avoids the blockage of the measuring instruments caused by the heavy oil viscosity and impurities. The system has strong corrosion resistance, easy cleaning, high precision, no moving parts, reliable operation and low failure rate. The metering system can also display the instantaneous and cumulative quantities of heavy oil such as mass and volume on the computer. 1151 differential pressure transmitter has been used to measure the level of heavy oil in the oil supply system. Due to the high viscosity and many impurities of heavy oil, the transmitter is often blocked, which brings inconvenience to use and maintenance. Therefore, a hybrid oil tank radar level gauge measurement system is used instead to measure the liquid level and quality of the heavy oil tank.
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