AKUSTISCHER DOPPLEREFFEKT; GESCHWINDIGKEITSMESSUNG (FLUIDDYNAMIK); MEASUREMENT OF VELOCITY AND QUANTITY RATE OF FLUID FLOW; COCOA BUTTER (FOOD INDUSTRY); SUSPENSIONS (HYDRODYNAMICS); KOLLOIDE + HYDROKOLLOIDE (LEBENSMITTELINDUSTRIE); PRESSURE MEASUREMENT + BAROMETERS + MANOMETERS (MECHANICS); ULTRASCHALLMESSTECHNIK; STRÖMUNG IN RÖHREN (FLUIDDYNAMIK); ACOUSTIC DOPPLER EFFECT; SUSPENSIONS (COLLOID CHEMISTRY); KAKAOBUTTER (LEBENSMITTELINDUSTRIE); SUSPENSIONEN (KOLLOIDCHEMIE); ULTRASONIC MEASUREMENTS; DRUCKMESSUNG + MANOMETER + MESSDOSEN + BAROMETER (MECHANIK); FLOW IN TUBES, PIPES, CLOSED CONDUITS (FLUID DYNAMICS); SUSPENSIONEN (HYDRODYNAMIK); COLLOIDS + HYDROCOLLOIDS (FOOD INDUSTRY)