B. Keys
ON/OFF-
Powers on and shuts off the meter.
MODE-
Selects display mode. Pressing this key changes the
display sequentially to display pH-AUTOLOCK,
mV-AUTOLOCK, pH and mV interface.
UP/DOWN-
The two keys are used to manually enter the
temperature values. They have no effect on the unit
when operating in ATC mode.
STAND/SLOPE-
The “STAND” and “SLOPE” keys are used for dual
point pH calibration of the unit. Pressing and holding
the “STAND” key while turning on the power, will
change the buffer set to the other available buffer set.
MEA. / EFF.-
The key is used to bring the unit out of the
AUTOLOCK condition when operating in the
pH-AUTOLOCK or mV-AUTOLOCK mode.
Press and hold this key for 5 seconds, the LCD will
display the efficiency of the electrode.
CLEAR-
It is used to clear the unit when error signal appears.
It clears all calibration values stored in the internal
memory.
In the pH-AUTOLOCK, mV-AUTOLOCK, pH and mV
modes, press and hold this key for 5 seconds to
enter the stand/slope calibration mode.
5
