Ukwethulwa Okuqukethwe 1. Isingeniso: Yini ama-Cross-Duct Ultrasonic Flowmeters? 2. I-Cross-Duct Ultrasonic Flowmeters isebenza kanjani? 2.1 I-Transducer Elements 2.2 Isikhathi sokukhanya esimisweni 2.3 I-Doppler Principle 3. Izingxenye eziyinhloko zeCross-Duct Ultra. Ama-Flowmeters 3.1 Transducers 3.2 Signal Processor 3.3 Isibonisi nokukhipha 4. Izinzuzo ze-Cross-Duct Ultrasonic Flo. wmeters 4.1 N