8
enter the temperature values. They have no effect on the
instrument
when operating in ATC mode.
5.
[MEA./EFF.]
key. a. The [MEA./EFF.] key is used to bring the
instrument out of the AUTOLOCK condition when operating in
the
pH-AUTOLOCK or mV-AUTOLOCK mode.
b.Press and hold this key for 5 seconds, the large LCD will
display the
efficiency of the electrode.
6.
[CLEAR]
key. The [CLEAR] key is used to clear the instrument
when
error signal appears. It clears all calibration values stored in the
internal
memory. To prevent accidental pressing the [CLEAR] key. Under
normal use the key will not be activated unless press and held for
2
seconds. The key will respond instantly only when error signal
appears.
When the [CLEAR] key is pressed, all segments of the LCD will
be on.
After about 2 seconds the instrument will enter the pH-
AUTOLOCK
mode. The AUTOLOCK annunciator will be on and the STAND
annunciator will start to flash. This means that the instrument
must be
calibrated. The [CLEAR] key is to be used only when errors are
made
that require the instrument to be re-calibrated.
OPERATIONAL PROCEDURES
BUFFER TABLE SELECT
