Title :
An automatic measurement apparatus for low value magnetic flux with high resolution
Author_Institution :
Nat. Inst. of Metrol., Beijing, China
Abstract :
When a low value flux is to be measured, the induced signal in the measuring coil would be very weak and the instrument resolution thus becomes very important (Chen Duoxingr, Magnetic field Measurement, Beijing, 1985). Here a nanovoltmeter is used as the preamplifier to detect the induced signal from the measuring coil and is followed by a digital integrator to obtain the flux value. Thus a resolution of less than 1 nWb for flux measurement is attained.
Keywords :
coils; electromagnetic induction; integrating circuits; magnetic flux; magnetic variables measurement; preamplifiers; signal resolution; voltmeters; automatic measurement apparatus; digital integrator; flux measurement resolution; induced signal; instrument resolution; low value magnetic flux measurement; measurement resolution; measuring coil; nanovoltmeter preamplifier; Coils; Computer errors; Current measurement; Force measurement; Magnetic field measurement; Magnetic flux; Preamplifiers; Signal resolution; Wire; Wounds;
Conference_Titel :
Precision Electromagnetic Measurements, 2002. Conference Digest 2002 Conference on
Conference_Location :
Ottawa, Ontario, Canada
Print_ISBN :
0-7803-7242-5
DOI :
10.1109/CPEM.2002.1034739
