- 9 -
Table – 1 Keypad operations and descriptions
Keypad
Operations
Descriptions
Short press
⚫
Press this key to turn on or turn off the meter.
Short press
Select measurement parameters:
⚫
pH meter:
→
Long press
⚫
In measurement mode, press this key to enter main menu.
Short press
⚫
In measurement mode, press this key to enter in calibration mode
⚫
In recall mode (RM), press this key to return to measurement mode
⚫
Cancel any operation to return to measurement mode.
Short press
⚫
In measurement mode, press this key to turn on or turn off backlight
⚫
In calibration mode, press this key to conduct calibration
⚫
In main menu, press this key to enter submenu
⚫
In submenu, press this key to enter parameter set-up mode
⚫
In parameter set-up mode, press this key to confirm parameters.
Long press
⚫
In pH measurement mode, press and hold this key to change the
resolution repeatedly:
0.01→ 0.1pH
Short/
long press
⚫
In the mode of manual temperature compensation (MTC), when press
and hold this key, the temperature value flashes, then press this key to
change the temperature value, and press
to confirm
⚫
In measurement mode, press
to store the measuring value, press
to recall the stored measuring value
⚫
In recall mode (RM), short press this key to change the storage
numberings, press and hold this key to change the number quickly
⚫
In the main menu and submenu mode, press this key to change the
numbering of the main menu and the submenu
⚫
In the parameter set-up mode, press this key to select parameters.
