The thesis presents the principles of operation and use of some of the most commonly used measurement transducers in the industrial environment. The focus is on measuring equipment that is part of the sales program of the German company VEGA Grieshaber KG, one of the world's leading manufacturers of measuring equipment, whose representative in Slovenia is the company where I am employed. The area of radar measurement sensors is discussed in detail, whose use has increased significantly in recent years due to the large number of advantages compared mainly to ultrasonic level sensors and continues to grow. The thesis describes the principles of operation of pressure transducers, capacitive transducers, level switches, and nucleonic sensors. Pressure sensors are used to measure the pressure of liquids and steam in pipelines, to measure the pressure in process vessels, and in some cases also to measure the level of liquids. Capacitive sensors are used for continuous or point level measurement of liquids and solids. Level switches are used for point level measurement of liquids and solids and also allow for control of pumps, valves, and other elements. Nucleonic sensors enable the measurement of level, density, and flow of liquids and solids in applications where intervention in the process is not possible or desirable.
In the practical part of the thesis, the VEGAPULS 64 radar level sensor was used to measure the level of water in a stainless steel barrel. The aim of the test was to demonstrate the operation of the radar level meter under different conditions. The presence of dirt, foam, and moisture was simulated, and the results were compared to measurements taken under normal conditions. The level was measured at three points, spaced 10 cm apart. The results of the measurements are presented in tables. It was found that the radar level meter is suitable for measuring liquid level, even under difficult conditions.
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