Maintenance and care
multi X 2500
104
Then, allow the device to dry or dry it with an inert gas.
Refer to "Preparing the chlorine module" S. 68 for information
on the installation of the sulfuric acid container.
10.4.6
Maintaining the measuring cell
Since the continuous introduction of hot reaction gases during operation causes
electrolyte components to evaporate, it is recommended to change the electrolyte
solution for the measuring cells "sensitive" and "high concentration" once per day:
The measuring cell "high sensitive" is an exception: Only remove the electrolyte in
case of analytical problems. During the daily maintenance routine of the measuring
cell "high sensitive" only top up electrolyte.
1.
Remove the used electrolyte.
2.
Rinse the measuring cell and the magnetic stirring rod with distilled water and
with ethanol.
3.
Then, carefully wipe out the measuring cell and wipe the magnetic stirring rod with
cellulose to remove any silver chloride deposits.
4.
Top up or fill the measuring cell with fresh electrolyte:
Measuring cell "high sensitive":
approx. 65 ml
Measuring cell "sensitive":
15 to 20 ml
Measuring cell "high concentration":
approx. 120 ml
Also observe the following notes:
If the system is decommissioned for several days, clean the measuring cell and
store it dried.
Regularly check the casing of the magnetic stirring rod for cracks. Metal ions
entering the electrolyte solution can distort the analysis.
Avoid fluids from entering the stirring/cooling block and the plug-in contacts (risk
of short circuit).
