User's Manual

PROBE PREPARATION
All probes are shipped dry by Hanna Instru-
ments. To hydrate the probe and prepare it
for use, connect it to the meter and proceed
as follows.
1 Remove the red and black plastic cap
which is for shipping purposes
and can be discarded.
2 Wet the sensor by soaking the
bottom 2½ cm (1") of the probe
in electrolyte (HI 7041S) for 5
minutes.
3 Take a membrane (HI 76407A
supplied with the meter) and
Make sure that
the rubber O-ring
sits properly in-
side the mem-
brane cap.
4 Rinse the
menbrane with
electrolyte while
shaking it gently.
Refill with clean
electrolyte.
5 Gently tap the
sides of the
membrane cap
with your finger
tip to ensure that
no air bubbles remain trapped. To avoid
damaging to the membrane, do not tap
the membrane directly on the bottom.
6 With the sensor facing down, screw the
cap clockwise. Some electrolyte will over-
flow.
When not in use, protect the
menbrane by placing the protec-
tive cap on it.
Shipping
cap
black
red
THEN SCREW
BACK ON
THIRD
TAP
SECOND
FILL
FIRST
INSERT
O’RING
5