YSI IQ S ENSOR N ET VARiON Plus 700 IQ - Manual (Page 15)

VARiON
®Plus
700 IQ Commissioning
3 - 3 ba76000e01 01/2012
3.3 Notes on the handling of the electrodes
The electrodes of the VARiON
®Plus
700 IQ combination sensor were
developed for the rough use in waste water treatment plants. They are,
however, precision parts that can be damaged by inappropriate use.
Therefore, exactly follow the instructions in the two following chapters.
3.3.1 Reference electrode
Commissioning
Fig. 3-1 Reference electrode with storing aids
In the delivery condition, the electrode is equipped with a watering cap
and a nut that protects the screw-in thread. The watering cap contains
3 mol/l potassium chloride solution. Before mounting, unscrew the
watering cap. Then, using the special hexagon key, unscrew the
electrode from the nut. Keep both storing aids in case you want to store
the electrode.
Caution
The junction of the reference electrode must not
 dry up (follow notes on storage)
 be damaged
 be brought into contact with grease.
Notes on storage If you will not use the electrode for a longer period of time, screw the
electrode into the nut as far as it will go. Fill the watering cap to the brim
with 3 mol/l potassium chloride solution and tightly screw the watering
cap on the electrode by hand.
Watering cap
Junction
Reference electrode
Nut
Sealing ring