6
3. Press
CAL
at any time to stop the data retrieval process and return the
meter to the normal measurement mode.
Clearing Stored Readings
1. With the meter ON press and hold
ON/OFF
for 4 seconds.
2. When ‘clr’ is shown on the display the memory is cleared.
SET UP
Membrane Cap Assembly - Filling and Replacement
The electrode is shipped dry and requires filling with the supplied electrolyte
solution before the first use. The membrane should be in place and does not
need to be replaced.
Important Note
: Do not touch the membrane as skin oils
will interfere with the oxygen permeability rate of the membrane.
1. The electrode should remain attached to the meter during the process.
2. Carefully remove the membrane cap assembly from the electrode by firmly
unscrewing it in a counter-clockwise direction.
3. Discard the used membrane cap assembly. NOTE: When a membrane
cap is installed the membrane must tightly stretch over the cathode. If a
membrane cap is removed, it can not be reinstalled because the membrane
will no longer stretch properly over the cathode.
4. Rinse the cathode and anode with deionized water.
5. Set the membrane cap assembly on a flat surface.
6. Fill the membrane cap
assembly with Electrolyte
Solution (DO600-EL) to the
bottom of the threads on the
inside of the cap. To remove air
bubbles hold the cap steady
with one hand and tap the side
of the assembly sharply with
a pen.
7. Do not move the membrane
cap assembly. Dip the
electrode into the assembly
and remove it. Repeat this
step several times. With each
dip, progressively push the
electrode deeper into the electrode solution in the assembly. This dipping
technique will minimize the introduction of air bubbles into the electrolyte
solution. Air bubbles can compromise dissolved oxygen measurements.
8. Carefully pick up the membrane cap assembly and slowly screw it onto the
electrode in a counter-clockwise direction until it is fully tightened. While
tightening the cap, excess electrolyte solution will leak out. This is normal
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