document: Application of ultrasonic sensors in the process industry Continuous process monitoring in gaseous , liquid or molten media is a fundamental requirement for process control . Besides temperature and pressure other process parameters such as level , flow , concentration and conversion are of special interest . More qualified information obtained from new or better sensors can significantly enhance the process quality and thereby product properties . Ultrasonic sensors or sensor systems can contribute to this development . The state of the art of ultrasonic sensors and their advantages and disadvantages will be discussed . Commercial examples will be presented . Among others , applications in the food , chemical and pharmaceutical industries are described . Possibilities and limitations of ultrasonic process sensors are discussed
doc_bio_tags: O O O O O O B I B I I O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I O O O O O O O O O O O O
extractive_keyphrases: process industry continuous process monitoring process control process quality pharmaceutical industries
abstractive_keyphrases: ultrasonic sensors application food industries chemical industries acoustic microsensors ultrasonic measurements ultrasonic attenuation acoustic impedance temperature measurement pressure measurement level measurement distance measurement flow measurement