SUPER-HIGH PRECISION DC CURRENT MAGNETIC COMPARATOR
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<sup>-7</sup> is realized.
Event details
- Event
- XVI IMEKO World Congress
- Place
- Vienna, AUSTRIA
- Time
- 25 September 2000 - 28 September 2000