AUTOMATIC LIQUID LEVEL GAUGE FOR HAZARDOUS AREAS

The purpose of this work is to develop an automatic liquid level meter for hazardous zones. The analysis of currently known level meters, which are widely used in the oil and oil refining industry, showed that their cost is very high. The proposed level gauge cost is significantly lower than that of industrial analogues for manufacture and operation. This paper describes the capabilities and operating principles of the developed liquid level meter for hazardous zones. The proposed level gauge is designed to measure the level of petroleum products for technological accounting and control of petroleum products. The flowchart and algorithm of the level gauge operation are given. This paper presents the "upper" level of automatic process control on personal computers. This level is based on the Trace Mode software package by AdAstrA Research Group, Ltd (Russia). The software package provides for the transmission of target setpoints from a computer, preliminary alarm, archiving of data of technological parameters, and a mnemonic diagram for passing technological parameters in real time. The level meter is designed to measure various levels with appropriate settings, the measurement accuracy ranges from 0.5–1 %.