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6 Maintenance
6
Maintenance
6.1
Cleaning
The electrodes of the conductive conductivity sensor come into direct contact with the measurement me-
dium.
Therefore, make sure they are cleaned on a regular basis, depending on the soiling tenden-
cy of the measurement medium.
For cleaning, you can use all suitable, common household cleaning chemicals.
Avoid using abrasive cleaning agents.
Ensure that the measuring electrodes do not suffer any mechanical damage.
Cleaning the electrodes in an
ultrasonic bath
is also good for removing various deposits.
When cleaning, proceed as follows:
•
Wipe off minor dirt with a soft, preferably lint-free cloth
•
Wash off stubborn dirt and greasy or oily deposits with warm soapy water and a soft brush; you can
also use ethanol to clean the sensor, if necessary
•
For calciferous coatings or precipitated metal hydroxides or metal oxides, use diluted hydrochloric
acid (3 % by weight) to dissolve the dirt
•
After cleaning, always rinse the sensor with water.
NOTE!
It is not permitted to use conductive conductivity sensors in highly adhesive, oily or sticky media
— for these cases we recommend using our inductive conductivity sensors.