Xylem CG 843P - Manual (Page 47)

Operation
119
4.4.4 Clearing the storage
This function can erase the stored data records. 200 mem-
ory locations will then become available again.
Note
The
Clear store function only appears if data records have
already been stored in the storage. Otherwise, the pH meter
automatically changes to the measuring mode.
In order to delete all the data records, proceed as follows:
Note
The calibration data remain in the storage and can be called
up via the calibration protocol.
1 Switch off the instrument.
2 Press and hold down the key.
3 Press the key.
The display test appears briefly on the display.
4 Confirm the clearing process by pressing
enter>.
Pressing any other key stops the clearing process
and the data records remain in the storage.