5
USING THE ELECTRODE
Set-Up
Electrode Assembly And Preparation
The electrode is shipped assembled, with a membrane in place for
packing. Disassemble the electrode as shown in step 1 of
Figure 2,
and discard the membrane. Reassemble according to instructions in
Figure 2
. After assembly the membrane should be slightly distended
by the inner body of the electrode. A membrane should last several
months, depending on usage. Membrane failure is characterized by a
shift in electrode potential, drift, and poor response.
See
TROUBLESHOOTING.
top cap
vent hole
outer body
bottom cap
1. Remove top cap. Lift out inner body. Pour out old
internal filling solution. Remove bottom cap.
5. Fill outer body with internal
filling solution
6. Put inner body into outer body
Screw top cap on. Excess
will vent.
Figure 2 Electrode Assembly and Preparation
2. Remove O-ring and old
membrane assembly from cap.
3. Place membrane-spacer assembly in
the electrode with the white spacer ring
towards the inner sensing ring element
and the translucent membrane down
towards the sample solution.
O-ring
inner body
inner
sensing
element
reference
element
Fill to
here
red O-ring
membrane spacer
assembly
bottom cap
4. Place red O-ring in cap.
Screw body into bottom cap.
