Engineering Aspects of Ultrasonic Process Control—Flow, Temperature and Liquid Level Applications

Autor:	L. C. Lynnworth
Rok vydání:	1986
Předmět:	Optics Materials science Flow (mathematics) business.industry Ultrasound General Engineering Measuring instrument Process control Mechanical engineering Ultrasonic sensor business Volumetric flow rate Metrology
Zdroj:	Journal of Vibration and Acoustics. 108:69-81
ISSN:	1528-8927 1048-9002
DOI:	10.1115/1.3269306
Popis:	The interaction of ultrasonic waves with solid, liquid, gaseous, or multiphase media offers many opportunities for accurate process control, but users risk disappointment because of the influence of “unwanted” variables. The present paper illustrates the use of ultrasonic transit time or amplitude measurements as a basis for calculating flow, temperature, and liquid level. The interrogating wave types include longitudinal, extensional, Rayleigh, transverse shear and torsional modes, at frequencies on the order of 0.1 to 1 MHz. Buffer techniques, special paths, or other means are illustrated for minimizing, avoiding, or compensating for the influence of undesired variables.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a527ce96388c1c990c21115b224e54b5 https://doi.org/10.1115/1.3269306 Zobrazit plný text záznamu