|
Q: What is Magnetic
Measurement system?
 The
evaluation of
magnetized,
demagnetized, or
magnetism-reduced
products greatly
affects the quality.
The characteristics
of magnets
themselves should be
considered carefully
at the design stage,
and the
characteristics of
the products
containing the
magnets must also be
evaluated in terms
of the influence of
leakage magnetism on
the ambient
environment.
Magnetic
instrumentation and
measurement are
becoming
increasingly
important in the
production of
products containing
magnets. |
|
 This
is the starting
point of magnetic
instrumentation
using the Hall
effect. The GM
Series was the
pioneering
production success
in Japan and marked
the start of
electromagnetic
products. The GM
Series offers a wide
range of products
for various
measurement
applications, as a
variety of sensors
can be combined
flexibly. GM
calculates and
displays the flux
density of an
element per unit
area as an average
value. Depending on
the sensor size, the
value differs even
when the same point
is measured.
However, this is not
an error but
attributable to
dependency on the
sensor size
(measuring
sensitivity area).
Choose an
appropriate model
from the GM Series
ranging from the
handheld type to the
desktop type and
from an ultra-low
magnetic field to
4T. |
|
 A
flux meter is used
in combination with
a search coil to
measure and evaluate
the flux of a
magnetized magnet. A
multi-pole
magnetized flux is
measured with high
precision. This
device has various
functions, such as
an N/S peak value
measuring function,
a comparator output
function for lines,
a communication
function for
exporting data to a
PC, and connectors
for external
control. The meter
works as follows: a
voltage is induced
by the search coil
in proportion to the
flux, is stored in a
capacitor, is
processed in an
integrating circuit,
and then is
displayed. The
latest model
features a V/F
conversion circuit
(converting voltage
fluctuations into
frequencies) to
eliminate drift for
higher performance. |
