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a-AB23EC Bench Conductivity Meter
Conductivity Probe Maintenance
Cleaning Recommendations:
Contaminant
Water soluble contaminants
Lubricants and oils
Lime or hydroxide coating
5.4
Cleaning
WARNING: Electric Shock Hazard. Disconnect the equipment from
the power supply before cleaning.
Make sure that no liquid enters the interior of the instrument.
Attention: Do not use solvents, harsh chemicals, ammonia or
abrasive cleaning agents.
The housing may be cleaned with a cloth dampened with a mild detergent if necessary.
5.5
Self-diagnosis
When the meter is on, press and hold the Read/Enter button and the Cal button
simultaneously until the meter displays the full screen. Each icon blinks one after the
other.
This way you may check whether all icons are correctly shown. The next step is to
check that the buttons are functioning correctly. This requires user interaction.
When b blinks, six icons (including b) are displayed.
Press the six buttons in any order. Each time you press a button, an icon disappears
from the screen. Continue to press the other buttons until all the icons have
disappeared.
When the self-diagnosis has been completed successfully, PAS appears. If self-
diagnosis fails, error message Err 1 appears.
Note: You have to finish pressing all six buttons within 2 minutes, otherwise Err 1
appears and you will have to repeat the procedure.
5.6
Recover factory settings
When the meter is off, press and hold the Read/Enter button, Cal button and Exit
button together for 3 seconds, the screen displays
"Reset". There are 2 options:
Press the Read/Enter button to reset factory settings (MTC, slope and offset, etc.),
display
Cleaning Solution
Rinse with deionized water
Soak in warm water about 60° C
and liquid detergent
Soak in 10% acetic acid or 10%
hydrochloric acid
then restart the meter.
Cleaning Time
No limit
10 to 30 minutes
10 to 30 minutes
and blinks, this means
EN-13
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