scholarly journals The Use of Shunts and Transformers with Alternate Current Measuring Instruments

1907 ◽  
Vol 21 (1) ◽  
pp. 235-253 ◽  
Author(s):  
Charles V Drysdale
Keyword(s):  
Alternate Current ◽  
Measuring Instruments ◽  
Current Measuring

A magnetic field simulating device for current measuring instruments testing purpose

2014 ◽  
Vol 28 (3) ◽  
pp. 301-309 ◽  
Author(s):  
M. Samplón-Chalmeta ◽  
Antonio Usón ◽  
Jesús Letosa ◽  
Joaquín Mur-Amada
Keyword(s):  
Magnetic Field ◽  
Measuring Instruments ◽  
Current Measuring

Half division two-dimensional method for simple sinusoidal quantities parameters accurate measurement

2021 ◽  
pp. 16-21
Author(s):  
Kirill Yu. Solomentsev ◽  
Vyacheslav I. Lachin ◽  
Aleksandr E. Pasenchuk
Keyword(s):  
Measuring Instruments ◽  
Measured Signal ◽  
Two Dimensional ◽  
Measuring Device ◽  
New Approach ◽  
Precision Measuring ◽  
Useful Signal ◽  
Midpoint Method ◽  
Order Of Magnitude ◽  
Current Measuring

Several variants of half division two-dimensional method are proposed, which is the basis of a fundamentally new approach for constructing measuring instruments for sinusoidal or periodic electrical quantities. These measuring instruments are used in the diagnosis of electric power facilities. The most general variant, called midpoint method, is considered. The proposed midpoint method allows you to measure much smaller than using widespread methods, alternating currents or voltages, especially when changing the amplitude of the measured signal in very wide ranges, by 1–2 orders of magnitude. It is shown that using the midpoint method it is possible to suppress sinusoidal or periodic interference in the measuring path, in particular, to measure small alternating current when sinusoidal or periodic interference is 1–2 orders of magnitude higher than the useful signal. Based on the results of comparative tests, it was found that the current measuring device implementing the midpoint method is an order of magnitude more sensitive than the currently used high-precision measuring instruments.

Increasing the Accuracy of Magneto-Optical Current Measuring Instruments

2014 ◽  
Vol 57 (9) ◽  
pp. 1041-1045 ◽  
Author(s):  
A. I. Evstaf’ev ◽  
M. A. Urakseev
Keyword(s):  
Measuring Instruments ◽  
Current Measuring

A Novel Calibration Method for Ampere’s Law-Based Current Measuring Instruments

2015 ◽  
Vol 64 (3) ◽  
pp. 715-722
Author(s):  
Miguel Samplon-Chalmeta ◽  
Joaquin Mur-Amada ◽  
Antonio Uson Sardana ◽  
Jesus Letosa Fleta
Keyword(s):  
Calibration Method ◽  
Measuring Instruments ◽  
Current Measuring ◽  
Ampere’S Law ◽  
Ampère’S Law

scholarly journals On copper electrolysis in Vacuo

1894 ◽  
Vol 55 (331-335) ◽  
pp. 66-83 ◽  
Keyword(s):  
Simple Form ◽  
Copper Sulphate ◽  
Measuring Instruments ◽  
Copper Salts ◽  
Faraday’S Law ◽  
Physical Laboratory ◽  
Current Measuring ◽  
Made In

The following research upon the electrolysis of copper sulphate in vacuo was commenced nearly two years ago, at the suggestion of Dr. Schuster, and the experiments were made in the Physical Laboratory of the Owens College. The electrolysis of copper salts is interesting, not only theoretically as affording a verification of Faraday’s Law of Electrolytes, but also practically on account of its constant use in the graduation of current-measuring instruments, such as tangent galvanometers and ammeters. It is known that copper sulphate in solution does not conform rigorously to the simple form in which Faraday’s law is generally expressed.

Design and Application of Corrosion Current Measuring Instruments

CORROSION ◽  
1955 ◽  
Vol 11 (8) ◽  
pp. 31-34
Author(s):  
DONALD L. HAM
Keyword(s):  
Corrosion Current ◽  
Measuring Instruments ◽  
Current Measuring ◽  
Design And Application

Abstract The three principal kinds of instruments used to measure currents associated with corrosion are described and their circuit diagrams illustrated. Considerations involved in selecting the correct instruments for several kinds of current measuring problems are reviewed and the capacities and limitation of the applicable instruments evaluated. Examples of typical uses are given.

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