REMAGRAPH® C - 500
REMAGRAPH C-530
for computer controlled measurement
of the hysteresis curves
of soft magnetic materials (IEC 60404-4, DIN EN 60404-4, ASTM A773)
The REMAGRAPH® C is a fully automatic, computer controlled station to measure the (quasi-)static
hysteresis curves (DC) of soft magnetic materials.
The measurements can be carried out on bars, strips and rings.
Bars or strips are clamped together with a measuring coil system between the poles of a double C yoke.
The coils are connected to two electronic fluxmeters. The magnetic polarization J = B - μ0 · H is measured
in dependence of the inner field strength H (initial magnetization curve and hysteresis loop).
Fixed measuring coils are used for various cross sections. Here the air flux between the sample and the coil
is compensated in regard to the field strength H. Thus the coils do not have to fit tightly to the surface of the
samples and can be used for different cross section shapes. The flux density B is calculated from the
polarization so that both J(H) and B(H) curves can be represented. The field strength H is determined by a
potential coil fitting tightly to the surface of the sample.
Ring shaped samples are provided with a primary and a secondary winding. The field strength H is
calculated from the current in the primary winding. The secondary winding is connected to a fluxmeter to
measure the flux density B.
The measuring speed is controlled in a way that the time change of the flux density B remains almost
constant. That is why the steep sections of the measuring curve are passed through slowly and the flat ones
faster. Thus measuring faults caused by eddy current influences are avoided and the measuring duration is
still kept short. So hysteresis losses can be determined independently from eddy current losses.
Special features of the REMAGRAPH® C:
· Automatic measurement of the static hysteresis curves of soft magnetic materials
· Measurements on bar, strips or ring samples
· The field strength is measured with a potential coil adjacent to the sample
Initial magnetization curve
Complete hysteresis loop
Hysteresis loop with preset excitation (Hmax or Bmax/Jmax)
Measurement of ring specimens (B measurement)
Measurement of bars with circular, rectangular or tubular cross-section with J-compensated
surrounding coils
Measurement with constant speed
Measurement with controlled speed (dB/dt = const.)
Remanence (Br or Jr)
Normal or intrinsic coercivity (HcB or HcJ)
Maximum permeability μrmax
Maximum field strength and polarization
Tables of J(H), B(H), μr(H), where H are user defined field strengths. Tables of H values can be
predefined.
Initial permeability μi
Output of sample and measurement parameters and calculated results in ASCII files, for import by
other programs
Output of sample and measurement parameters and calculated results in data bases
Remagraph_C_e_2096_제품카다로그.pdf
