SUPER-HIGH PRECISION DC CURRENT MAGNETIC COMPARATOR
R. J. Berkman
Abstract:
The high precision comparison of DC currents in electrically insulated circuits using magnetic modulators was not yet realized in practice; the nature of arising errors and their values were not described in literature. The physical model is proposed, which explains the error as a result of non-homogeneous magnetic fields influence, produced by comparison and output windings along the ring core of magnetic modulator. The expression for comparison error calculation in such devices is deduced, experimentally verified and methods of its reducing are proposed. The comparison error about 10-7 is realized.
Keywords:
DC comparator, magnetic modulator, flux-gate sensor
Download:
IMEKO-WC-2000-TC4-P111.pdf
DOI:
-
Event details
Event name:
XVI IMEKO World Congress
Title:

Measurement - Supports Science - Improves Technology - Protects Environment ... and Provides Employment - Now and in the Future

Place:
Vienna, AUSTRIA
Time:
25 September 2000 - 28 September 2000
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