PERMAGRAPH® L
for the computer controlled
measurement of hysteresis curves
of hard magnetic materials
자기이력곡선 분석 장비
The PERMAGRAPH® is the world-wide known standard equipment for the measurement of hysteresis loops
of permanent magnets in research, quality control and production.
The PERMAGRAPH® L is the light version of this fully automatic, computer controlled measuring system to
determine magnetic characteristics of hard magnetic materials.
Together with the high performance software package PERMA and the required control unit we offer an
automatic measuring station which facilitates quick and reliable measurements. Our instruments are known
for quality and long lifetime.
The system design conforms to IEC 60404-5, ASTM A977, DIN EN 10332 (formerly DIN 50470). The temperature upgrade conforms to IEC 61807TR, DIN IEC 68/190/CDV.
The equipment has been optimized for years and has been made especially to the requirements of our
customers. The following measurements are possible:
· Automatic measurement of the hysteresis curves of permanent magnets
· Determination of magnetic quantities like remanence, coercivity, max. energy product
· Measurement with surrounding coils to determine the magnetic mean values
· Measurements at temperatures up to 200 °C with heat ing poles and temperature surrounding coil
Curves
Demagnetization curve
Complete hysteresis loop
Recoil curves
Automatic stop at HcJ possible
Automatic stop at -Imax possible
(BH)max area
B=0 line
· Evaluation
Remanence (Br or Jr)
Coercivity of J curve HcJ (intrinsic coercivity)
Coercivity of B curve HcB (normal coercivity)
Maximum energy product (BH)max
Maximum field strength
Hk: knee shape parameter (H coordinate of intrinsic curve when B = 0.9 · Br)
Hx: H coordinate of J(H) curve when B = x · Br
Tables of J(H) and B(H), where H are user defined field strengths. Tables of H values can be
predefined and stored.
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
Temperature correction: Conversion of results by means of temperature coefficients
Permagraph_L_e_제품카다로그.pdf
