Section 2.4 Cleaning The Electrode Finger Tip
CAUTION: Potential damage to the sensor
Cleaning the electrode finger (3,4) incorrectly may damage the sensor.
•
Do not sand the brown coating on the combined counter and reference electrode (3).
•
Do not touch or contaminate the electrode finger (3,4).
•
Carry out the following steps exactly as they are described.
(1)
(5)
(2)
(6)
(3)
(7)
(4)
(8)
1.
Make sure the vent seal is pushed down and the vent hole is open, unscrew
the membrane cap from the shaft of the sensor.
2.
Clean the electrode finger and membrane cap with distilled water and dry.
3.
Using the special abrasive paper, clean only the tip of the dried electrode
finger. To do this place the special abrasive paper on a paper towel with the
matte side facing up, hold one corner firmly in place and while holding the
sensor vertically, move the electrode tip two or three times over the special
abrasive paper.
DO NOT PRESS DOWN ON THE SENSOR, USE ONLY
THE WEIGHT OF THE SENSOR TO APPLY PRESSURE OR YOU WILL
REMOVE THE ELECTRODE COATING AND DESTROY THE SENSOR TIP.
4.
If necessary use a new membrane cap.
5.
Fill the membrane cap up to the brim with enclosed electrolyte ensuring
there are no bubbles. With the vent hole open screw the membrane cap
onto the sensor.
6.
Replace the vent hole seal.
