ultrasonic flowmeter - ορισμός. Τι είναι το ultrasonic flowmeter
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Τι (ποιος) είναι ultrasonic flowmeter - ορισμός

FLOW METER USING ULTRASOUND
Ultrasound flow meter; Ultrasonic Flowmeter; Ultrasonic flow meters

Ultrasonic nozzle         
  • High Temperature Ultrasonic Nozzle
Ultrasonic Nozzle
Ultrasonic nozzles are a type of spray nozzle that use high frequency vibrations produced by piezoelectric transducers acting upon the nozzle tip that create capillary waves in a liquid film. Once the amplitude of the capillary waves reaches a critical height (due to the power level supplied by the generator), they become too tall to support themselves and tiny droplets fall off the tip of each wave resulting in atomization.
Ultrasonic cleaning         
  • Sonorex ultrasonic cleaner from the 1970s or 1980s
  • Ultrasonic transducers showing ~20 kHz and ~40 kHz stacks.  The active elements (near the top) are two rings of [[lead zirconate titanate]], which are bolted to an aluminium coupling horn.
  • Ultrasonic cleaning of a mobile phone
PROCESS THAT USES ULTRASOUND AND A CLEANING SOLVENT TO CLEAN ITEMS
Ultrasonic bath; Ultrasonic cleaner; Sonic bath; Ultrasonic agitation; Ultrasonic cleaners
Ultrasonic cleaning is a process that uses ultrasound (usually from 20 to 40 kHz) to agitate a fluid, with a cleaning effect. Ultrasonic cleaners come in a variety of sizes, from small desktop units with a capacity of less than , to large industrial units with a capacity approaching .
Ultrasonic machining         
  • Schematic of ultrasonic machining process
  • An ultrasonic drill from 1955
Ultrasonic Machining Operation; Ultrasonic impact grinding
Ultrasonic machining is a subtractive manufacturing process that removes material from the surface of a part through high frequency, low amplitude vibrations of a tool against the material surface in the presence of fine abrasive particles. The tool travels vertically or orthogonal to the surface of the part at amplitudes of 0.

Βικιπαίδεια

Ultrasonic flow meter

An ultrasonic flow meter is a type of flow meter that measures the velocity of a fluid with ultrasound to calculate volume flow. Using ultrasonic transducers, the flow meter can measure the average velocity along the path of an emitted beam of ultrasound, by averaging the difference in measured transit time between the pulses of ultrasound propagating into and against the direction of the flow or by measuring the frequency shift from the Doppler effect. Ultrasonic flow meters are affected by the acoustic properties of the fluid and can be impacted by temperature, density, viscosity and suspended particulates depending on the exact flow meter. They vary greatly in purchase price but are often inexpensive to use and maintain because they do not use moving parts, unlike mechanical flow meters.