A B-H Analyzer is an instrument that measures the
AC magnetic characteristics of soft
magnetic materials. It measures residual
flux density
Flux describes any effect that appears to pass or travel (whether it actually moves or not) through a surface or substance. Flux is a concept in applied mathematics and vector calculus which has many applications to physics. For transport ph ...
B
R and
coercive force
Coercivity, also called the magnetic coercivity, coercive field or coercive force, is a measure of the ability of a ferromagnetic material to withstand an external magnetic field without becoming demagnetized. Coercivity is usually measured in ...
H
C. It has applications in manufacturing magnetic-related products such as
hard disk
A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnet ...
s and
magnetic tape
Magnetic tape is a medium for magnetic storage made of a thin, magnetizable coating on a long, narrow strip of plastic film. It was developed in Germany in 1928, based on the earlier magnetic wire recording from Denmark. Devices that use magne ...
, and in analysis of cast irons.
See also
*
B field and H field
*
Magnetic hysteresis
*
Saturation (magnetic)
Seen in some magnetic materials, saturation is the state reached when an increase in applied external magnetic field ''H'' cannot increase the magnetization of the material further, so the total magnetic flux density ''B'' more or less levels off ...
References
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External links
Photograph of the SY-8218, a common B-H Analyzer
Magnetism
Measuring instruments
Laboratory equipment
Scientific equipment