|
A sensitive
and accurate
tool for field
measurement of
susceptibility
of outcropping
rocks, drill
cores or rock
samples
FEATURES
-
HIGH
SENSITIVITY
1 x
10
-7
SI
UNITS
The
sensitivity
is 100
times
better
than the
competitive
instruments.
-
SMALL SIZE
AND LOW
WEIGHT
The SM-30
is truly
shirt
pocket-sized
instrument.
With
dimension
100 x 65 x
25 mm and
weight
0.180 kg.
SM-30
outperforms
competitors
3
times.
-
LOW
NOISE
Thanks to
sophisticated
signal
processing
the noise
induced in
pick-up
coil is
suppressed
well under
resolution
1 x
10
-7
SI
units.
-
DEEP
PENETRATION
OF THE
SIGNAL
The sensor
design
enables to
get 90 %
of its
signal
from the
first 20
mm of the
rock. This
feature
allows
more
accurate
readings
on uneven
surfaces
of all
rock
types.
-
SIMPLE
OPERATION
Auto-ranging
and
three-button
control
makes the
meter the
easiest to
operate by
one hand
only.
Internal
memory can
store 250
readings.
-
WARRANTY
One-year
warranty
is
included
in the
price. We
offer 48
hours
turnaround
support
and repair
service
for any
instrument
sent from
any
location
worldwide.
Subsequent
customer
support is
provided.
GENERAL
The SM-30 is small magnetic
susceptibility meter. Thanks
to the high sensitivity we can
measure sediments and rocks
with extremely low level of
magnetic susceptibility. In
addition, we can distinctly
measure diamagnetic materials
like limestone, quartz and
also water.
The SM-30 is controlled by
three push buttons. One of
them serves to save up to 250
measured values into
nonvolatile memory and to
recall them later. The 251th
value (the last measured one)
is automatically displayed
after SM-30 is switched on. If
no button is pressed for 3
minutes, the instrument
switches off automatically.
The SM-30 has a beeper
indicating intervals in which
the information from the rock
is picked-up.
The SM-30 is powered from two
coin lithium batteries CR2430.
If the instruments is not used
too extensively, the batteries
may last for years thanks to
their low
self-discharge.
SENSOR
The SM-30 has 9 kHz LC
oscillator with a large size
pick-up coil as a sensor. The
oscillation frequency is
measured when
-
the coil is put to the
surface of measured
rock
-
the coil is removed tens
of cm away.
The SM-30 offers four measuring modes. Three
of them compensate the linear part of the
thermal drift.
The large number of the memory registers (250)
is useful especially when scanning mode is
used.
Though the instrument is small, the pick-up
coil is large enough in diameter to measure
sufficiently high volume.
SPECIFICATION
|
SENSITIVITY |
1 x
10
-7
SI units |
|
OPERATING
FREQUENCY |
9 kHz |
|
MEASUREMENT
TIME |
Less than 5
s |
|
DIGITAL
DISPLAY |
4 digits LCD |
|
CONTROLS |
3 push
buttons |
|
PICK-UP COIL |
50 mm in
diameter |
|
OPERATING
TEMPERATURE |
-20°C to
50°C |
|
BATTERY |
2 lithium
CR2430 |
|
BATTERY LIFE |
Approx. 80
hrs |
|
DIMENSIONS |
100 x 65 x 25
mm |
|
WEIGHT |
0.180 kg |
|
PC INTERFACE |
RS232C |
|
STANDARD
ACCESSORIES |
operating manual,
RS232 cable,
PC software for data
transmission and for
external
control. |
GRAPH OF THE STABILITY
|
|
Noise of the SM-30
The measuring by SM-30 is
done in 15 second
intervals. Measured data
is transmitted to the
computer with the
resolution 1 x
10
-8
SI units. The test was
done with the programmer
SM-30w, which is included
in standard supply
accessories. |
|
USING
THE
SM-30 |
|
|
|
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