Metrohm 827 pH lab - Manual (Page 57)

8 Troubleshooting – Messages – Maintenance
826/827 pH meter, Instructions for Use
49
8.4 Maintenance
Warning!
You should remove the batteries in case the pH meter is not used for
a longer period. Leaking batteries can damage the pH meter.
8.4.1 Changing the batteries (826 only)
The 826 pH mobile reminds you of changing the batteries by displaying
the message "battery low" and the symbol . The measurement ac-
curacy is not affected at all.
Note!
All the parameters are reset to the default values. The current date
and time are reset to 2005-01-01 and 00:00:00 respectively. The cali-
bration data as well as the stored measured values are not lost.
Metrohm recommends using batteries of the type alkaline or lithium.
Proceed as follows:
 Switch off the pH meter.
 Unscrew the six screws on the base of the housing with the en-
closed allen key and remove the base plate.
Fig. 5: Changing the batteries for the 826 pH mobile
Warning!
Do not remove the gray shielding plate under any circumstances and
do not touch any electronic components.