DO600-en-EU_V7.2 09/14
3
Operation
Prepare
the
Electrode
The
electrode
is
shipped
“dry”
and
requires
filling
with
the
supplied
electrolyte
solution
before
use.
The
membrane
should
be
in
place
and
does
not
need
replacement.
Follow
the
procedure
at
the
end
of
this
guide
for
filling
the
bonded
cap.
NOTE:
Make
sure
that
there
are
no
air
bubbles
in
the
electrode
before
use.
Powering
the
ExStik®
The
ExStik
®
uses
four
(4)
CR2032
Lithium
Ion
Batteries.
Press
the
ON/OFF
button
to
turn
the
meter
on
or
off.
If
the
batteries
are
weak,
the
‘BAT’
indicator
appears
on
the
LCD.
The
auto
power
off
feature
shuts
the
ExStik
®
off
automatically
after
approximately
10
minutes
of
inactivity.
The
auto
power
off
feature
may
be
temporarily
disabled
for
convenience
or
for
extended
polarization
time.
Startup
Polarization
Period
When
the
ExStik
®
is
powered
up
for
the
first
time,
the
electrode
requires
polarization.
In
order
for
this
to
occur
a
three
minute
(approx.)
polarization
period
must
elapse
before
measurements
can
be
made.
A
special
circuit
is
included
in
this
meter
which,
upon
turn
‐
on,
maintains
a
very
small
biasing
current
to
the
electrode
for
a
period
of
seven
days.
This
keeps
the
electrode
polarized
and
enables
the
user
to
make
immediate
measurements
(within
a
7
day
period)
without
waiting
for
the
electrode
to
re
‐
polarize.
Each
time
the
ExStik®
is
turned
on,
the
polarization
timer
is
reset
and
the
7
day
polarization
period
is
initiated.
A
small
asterisk
at
the
bottom
right
corner
of
the
display
is
used
to
indicate
that
the
polarization
timer
circuit
is
active
even
when
the
meter
is
off.
If
the
ExStik
is
not
used
for
more
than
seven
day,
a
3
minute
waiting
period
is
required
before
a
measurement
can
be
made.
Turn
‐
On
Diagnostics
1.
When
the
meter
is
turned
ON
the
LCD
displays
“SELF”
and
“CAL”
while
the
meter
runs
a
diagnostic
routine.
2.
During
this
time
the
meter
is
recalling
the
User
Calibration
data,
performing
self
diagnostics
&
initializing
the
circuitry.
3.
After
this
function
is
complete,
the
meter
proceeds
to
the
normal
measurement
mode.
4.
The
DO600
should
be
calibrated
daily
for
measurement
accuracy.
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