Electricity: measuring and testing – Magnetic – With compensation for test variable
Patent
1988-08-29
1990-01-09
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
With compensation for test variable
324230, 324234, G01N 2772, G01B 710, G01R 3312
Patent
active
048930792
ABSTRACT:
An apparatus and method for measuring physical characteristics of an electrically conductive material by the use of eddy-current techniques and compensating measurement errors caused by changes in temperature includes a switching arrangement connected between primary and reference coils of an eddy-current probe which allows the probe to be selectively connected between an eddy current output oscilloscope and a digital ohm-meter for measuring the resistances of the primary and reference coils substantially at the time of eddy current measurement. In this way, changes in resistance due to temperature effects can be completely taken into account in determining the true error in the eddy current measurement. The true error can consequently be converted into an equivalent eddy current measurement correction.
REFERENCES:
patent: 2049924 (1936-08-01), Pugh
patent: 3252084 (1966-05-01), Krobath
patent: 3378763 (1968-04-01), Hastings
patent: 3521159 (1970-07-01), Morrow
patent: 3651398 (1972-03-01), Urmenyi
patent: 3688187 (1972-08-01), Loos
patent: 4567435 (1986-01-01), Yamada et al.
Caffarel Alfred J.
Kustra Thomas A.
Constant Richard E.
Moser William R.
Randolph William W.
Snow Walter E.
Strecker Gerard R.
LandOfFree
Method and apparatus for correcting eddy current signal voltage does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for correcting eddy current signal voltage , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for correcting eddy current signal voltage will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-147126