YSI IQ S ENSOR N ET TriOxmatic 700 IQ (SW) - Manual (Page 32)

Maintenance, cleaning, disposal, and replacement TriOxmatic
®
700 IQ (SW)
5 - 10 ba76013e01 01/2012
5.4 Cleaning the electrodes
The counter electrode and reference electrode always show a
coloration. This is necessary for the operation of the sensor. This is not
contamination. Cleaning is only required in cases of slopes that are too
small or too large (the sensor cannot then be calibrated) that cannot be
resolved by changing the membrane cap and electrolyte solution.
Caution
To clean the electrodes, always unscrew the sensor from the
SACIQ (SW) sensor connection cable. Otherwise, undesirable
electrochemical reactions can occur that may lead to the
destruction of the sensor.
Preparatory activities
1 Pull the sensor out of the sample and remove any coarse
contamination from the sensor (e.g. brush it off in a bucket of
tapwater, wash it down with a hose or wash it off with a cloth).
2 Unscrew the sensor from the SACIQ (SW) sensor connection
cable (see section 5.1 G
ENERAL MAINTENANCE INSTRUCTIONS ).
3 Unscrew the protective hood from the sensor.