GHM GREISINGER G 1610, Compact Manual, Page: 19 / 26

G 1610 Operation and maintenance | 6
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6 Operation and maintenance
6.1 Operating and maintenance notices
_
NOTE
If the device is stored at a temperature above 50 °C, or is not used for an extended
period of time, the batteries must be removed. Leaks from the batteries are avoided as
a result.
_
NOTE
The electrode should be stored in dry rooms at a temperature between 10 and 30 °C.
If the storage temperature range is exceeded or undercut, the electrode can be de-
stroyed. It should always be stored wet in distilled or deionised water.
6.2 Automatic calibration in the air
NOTE
Calibration takes place in air saturated with water vapour. The GCAL 3610 calibration
container or the storage bottle can be used for this purpose. The membrane of the
electrode must be dry for the calibration. Prior to performing the calibration of the
membrane, dab away water droplets from the membrane with a soft, dry cloth. The
following must be observed when using the storage bottle:
Only insert the electrode far enough into the storage bottle that the membrane does
not come into contact with the water in the bottle.
Unscrew the lid of the storage bottle and only position it so that a small exchange of air
and pressure equalisation can take place
1. Place the electrode in the calibration container. If necessary, wait until the tem-
perature has equalised and a stable value has been achieved.
2. Press the
Function key
for 4 seconds to open the
Calibration
menu. The display
shows
(AL
.
3. Release the
Function key
.
4. The device determines the correct value automatically.
After successful completion of the calibration the assessment of the electrode condi-
tion is displayed briefly in percent. Then, the current measurement is shown in the
display again. An aged or contaminated electrode, incorrect adjustment of the pres-
sure, contamination of the platinum electrode or a damaged membrane can be the
cause for a lower evaluation.
If the calibration is not completed successfully an error message is displayed.
(AL ERR.
appears in the display (refer to
“Error and system messages”).