6
NO.
Key
Description
1
S
tand
Stand & Slope/Enter-
These two keys are used for pH and ORP
calibration. For their specific functions, please
see the "calibration" section in each parameter.
In the measure mode, press
“Slope/Enter”
key for 2 seconds, in order to save reading into
the data storage site.
At the Recall interface, press
“Slope/Enter”
key to display the last set of saved data.
In the “Delete All” mode, press
“Slope/Enter”
and enters the selection screen.
In
the
“Delete
One”
mode,
press
“Slope/Enter”
key to delete a single set of
data.
2
Mode-
Selects display mode. Pressing this key
changes the display sequentially to display
pH-AUTOLOCK, mV (RmV)-AUTOLOCK, pH ,
mV (RmV), Recall, Delete One and Delete ALL.
The calibration values will not be affected by
changing the display modes.
In the calibration mode, press
“Mode”
key to
exit calibration mode.
In “Recall” and “Delete” modes, press
“Mode”
key to exit “Recall” and “Delete” modes
respectively.
3
M
ea.
E
ff
.
S
tand
S
lope
M
ode
C
lear
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 mode or mV (Rmv) mode, when the
“Clear”
key is pressed for 5 seconds, all
segments of the LCD will be on. After 2
seconds the unit will enter the pH-AUTOLOCK
mode or mV (Rmv)-AUTOLOCK mode. The
meter clears all calibration values stored in
internal memory.
4
M
ea.
E
ff
.
S
tand
S
lope
M
ode
C
lear
On/Off-
Press and hold this key for 2 seconds to power
on and shut off the meter.
5
M
ea.
E
ff
.
S
tand
S
lope
M
ode
C
lear
Mea./Eff.-
The key is used to bring the unit out of the
AUTOLOCK condition when operating in the
pH-AUTOLOCK or mV (RmV) - AUTOLOCK
mode.
In the pH measure mode, press and hold this
key for 5 seconds, the LCD will display the
efficiency of the electrode and the offset value.
Slope
Enter
M
ea.
E
ff
.
S
tand
S
lope
M
ode
C
lear
