17
Locate the sample sensor cable and ensure that it is
securely inserted into the receptacle above the measur-
ing chamber. Check that an o-ring is present in the
right electrode holder.
See illustration 2-9.
Now install the electrodes in the measuring chamber,
beginning on the right and working to the left (the
reference electrode will be installed last).
Note: The electrode on the right may be one of the
following: chloride, ionized calcium, lithium or a
dummy electrode, if no third test is needed. If sodium
and lithium are selected, the K
+
electrode is replaced
by a dummy electrode.
Check to make sure that the lettering on the measur-
ing chamber matches the lettering on the electrode.
Also, note that all electrodes have a lip on the bottom
that rests on the flat edge of the measuring chamber to
aid in proper positioning.
See illustration 2-10.
Close the clamp on the left electrode holder by lifting
it upward until it locks in the back position, and
ensure that the electrodes are properly seated.
See illustration 2-11.
2-9. Sample sensor cable & o-ring
2-10. Installing electrodes
2-11. Closing electrode clamp
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