TITLE

Level: A visual concept

AUTHOR(S)
Gillum, Don
PUB. DATE
April 2008
SOURCE
InTech;Apr2008, Vol. 55 Issue 4, p62
SOURCE TYPE
Periodical
DOC. TYPE
Article
ABSTRACT
The article focuses on the methods of level measurement. Level can be measured by direct, which employ physical principles, and inferred methods, which involve the use of hydrostatic head, weight quantities and density. The earliest instruments used were sticks or poles with calibrated scales to test the depths of streams. Drawbacks include performing an action and absence of a continuous representation of the process measurement. A sight glass is an important instrument for visually determining level quantities. Gage classes can be classified in terms of low- and high-pressure processes. A recent innovation involves the use of fiber-optic cables to transport light generated by a bicolor boiler-water-level gage system.
ACCESSION #
31935427

 

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