4.
ZERO
SETTING
(CALIBRATION)
.... 1. Remove
the
cap
of
the nozzle.
....
2.
Dip
the tip
of
the nozzle in water,
and
then squeeze
and
release the
tube pump. The
water
is sucked
into
the sample chamber in this
process.
.... 3. Confirm
that
the sample chamber has been filled with water. If
bubbles are still in the sample chamber, operate the tube pump again
to
suck water to fill the sample chamber.
.... 4. Press
the
ZERO
setting switch."000" will blink three times,
and
''000''
will be displayed on the liquid crystal display.
PRESS
.... 5.
Now,
the zero-setting is over. Take the nozzle
out
of
the
water
and
squeeze the tube pump
to
drain the
water
from the sample chamber.
Claibration
of
unit is
done
by using water and pushing zero switch.
Leave the
SBS
2002
at
the place
of
measurement for some time before
making measurement
so
that
the temperature
oftheSBS
2002 is
sufficiently close
to
the ambient temperature.
The zero-setting status remains
as
it
is until the voltage
of
the battery
becomes too low
or
the battery itself is removed.
Zero-setting can
be
made anytime. When zero-setting
is
made again, the
new zero-setting status replaces
the
previous status.
It is desirable to use distilled water for zero-setting. City water may also
be used because the impurity level is usually as small as 0.01%.
Leave the distilled water
at
the place
of
measurement for some time
before zero setting
SO
that
it's temperature
is
close to
the
ambient
temperature.
7
5.
MEASUREMENT
OF
SAMPLE
.... 1. Press
the
SELECT
switch
to
move the triangle mark to a desired
measurement item
on
the
display. The mark moves to the next item
every time you press the
SELECT
switch. You may measure either
specific gravity
or
temperature.
.... 2.
Dip
the
tip
of
the nozzle in the sample, and squeezp and release the
tube pump to suck the sample electrolyte into the sample
chamber.
.... 3. Press
the
START
switch. The triangle mark blinks
three
times, and the
result
of
measurement is displayed
on
the liquid crystal display.
.... 4. Squeeze
and
release the tube pump
to
drain the sample electrolyte.
Then move
to
the next cell and
repeat
steps 2 and 3. The total time to
test a cell should be 3-5 seconds.
.... 5. The display value remains
on
the
LCD
Panel for 5 minutes if left alone.
.... 6. Keep the
START
switch pressed for more than 2 seconds to switch the
unit off.
.... 7. Squeeze
and
release the tube pump several times to drain the sample
electrolyte.
If
YQU
are storing the
SBS
2002,
fill
the chamber with
water
several times
by
pressing
and
depressing tube pump, to flush
sample chamber.
Measured result may
not
be correct ifdirect sunshine falls on the sample
chamber. Face your back to
the
sun
or
cover the sample chamber with
your hand
at
measurement.
If
it is difficult
to
remove the sample liquid from the nozzle by operating
the tube pump, apply a tissue paper to
the
tip of the nozzle, and squeeze
it
out slowly.
Note: The small amount
of
sample electrolyte remaining in the nozzle will
have little affect on consecutive measurements.
8
