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Figure 1.
Model 3529A Magnetometer Probe
SECTION
I
GENERAL
INFORMATION
1. INTRODUCTION,
2. The
Model
35294
Magnetometer
Probe
is an
accessory
which
converts
the Model
428A or Model
428B
into
a
magnetometer.
It is valuable
in any
Table 1.
3529A
PROBE
application
where
a
magnetic
field
exists
and
an
accurate
determination
must
be made
of either its
direction
or
its magnitude.
Both
accurate and com-
.
pact (the probe tip is only 1/4 in. in diameter), it is
useful in a wide range of applications, such as meas-
uring the leakage field of transformers,
etc.
3. DESCRIPTION.
4.
The
accuracy
of the Model
3529A
is better than
+3% £0.1 milligauss. Its bandwidth is from dc (non-
varying
fields)
to 80 cps, allowing it to be used in
the measurement
of ac fields associated with power-
line frequencies.
9. The
conversion
factor of the Model
3529A
is 1
gauss
=
1 ampere,
that
is, the
reading
from the
Model
428A/B
in amperes
is directly equal to the
measured
field
strength
in gauss. The component of
the field sensed
is the component
which
is parallel
to the
cylindrical
axis
of the
probe,
allowing
the
user
to eliminate
the
effects
of extraneous
fields
(such as that of the earth, approximately 500 milli-
gauss) by orienting the probe.
Specifications
ACCURACY:
Probe calibrated to specific instrument:
+ 3% of full scale from 0^ C to £55? C
RANGE
With 428A:
0.3 milligauss to 1 gauss; six ranges from 3 milligauss
With 428B:
to 10 gauss, full scale, in 1, 3, 10....sequence
CONVERSION FACTOR:
OPERATING TEMPERATURE
RANGE:
COMBINED NOISE AND SHORT-
TERM DRIFT:
OUTPUT FREQUENCY RANGE,
MODEL 428B
EQUIPPED WITH MODEL 3529A:
.
STORAGE RANGE:
DIMENSIONS:
-20° C to «55^ C
Typically less than £0. 1 miligauss, peak
DC to 80 cps (3 db point)
-40° C to 65^ C
1 milligauss/milliampere (1 Gauss/amp)
3-11/16 in, by 7/16 in. diameter, maximum; cable:
7 feet long
01364-2
3529-901
MAGNETOMETER
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