Current Meter


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current meter

[′kər·ənt ‚mēd·ər]
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Current Meter

 

an instrument for measuring the velocity of flowing water. The instrument’s action is based on the relation between the velocity of the flowing water and the number of rotations of the cups or vanes that are placed in the moving current. The number of revolutions made by the cups or vanes is transmitted by an electrical signalling system to an observer or is registered on a mechanical meter attached to the body of the instrument. There are many different models of current meters; some measure the velocity and the direction of the water flow, and others measure the magnitude of the projection of the velocity of the current on the direction of the axis of the current meter (component current meters). The relation between the number of rotations and the velocity of the water is fixed for each current meter by calibration. A current meter is useful for measuring the velocities of flow from 0.03 to 10-12 m/sec.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
For the movement of the current meter, a tow car was built using steel tubes (width = 0.30 m; length = 2.20 m), which moved over the channel using nylon pulley wheels, guided by a rail on one of its sides (Figure 1).
For example, if one lead of the DUT is connected to a super node such as a power or ground node, this lead should be placed on the source side rather than on the current meter's measurement pin.
We therefore conclude that current camera videos analyzed by our algorithm are an effective current meter for measuring flow experienced by T.
In the new measure, the import duties were abolished on four groups of goods - chemicals, electric current meters, thermometers and manometers - were abolished; reduced to 5% on 215 groups such as decorative fish, organic compounds, tires, cotton yarn and hand tools; to 10% on 550 groups including paint and varnish, cosmetics, gold (not coins), platinum, zinc plates, electric equipment, watches and pens; to 15% on 456 groups such as handgloves, wire nails and toys; to 20% on 40 groups such as profile steel, iron, door and window shutters and to 25% on four other groups including profile steel I and H, and wire cord.