15
g. Press
“Slope/Enter”
key. The mV value of the standard
solution will appear on the main display. The “Wait” icon will
flash until the meter detects a stable value. When the
“Wait” icon disappears and the ion calibration value on the
secondary screen moves up to the next value, the first point
calibration is complete and the meter is ready for the
second point calibration.
h. Rinse the ISE in distilled water and immerse it in the second
standard solution. Press
“Slope/Enter”
key. The “Wait”
icon will flash until the meter detects a stable reading.
When the “Wait” icon disappears and the ion calibration
value on the secondary screen moves up to the next value,
the second point calibration is complete and the meter is
ready for the third point calibration.
i.
To continue with the third, the fourth and the fifth point
calibration, repeat step
“g”
. Press
“Mode”
key to exit
calibration mode when the desired calibration points are
completed.
[
Note:
The slope (mV difference between two consecutive
points) is 15 to 90 mV.]
2. Calibration in the ION-NON-AUTOLOCK mode.
a. Turn the unit on. In ION-NON-AUTOLOCK mode, press
“Set/Clear”
key for 5 seconds, all LCD elements will lit up.
The meter clears all calibration values stored in internal
memory.
b. Press the
“Set/Clear”
key to enter the calibration point
selection screen. Use
“Up”
or
“Down”
key to select 2 to 5
point calibration.
c.
Press
“Slope/Enter”
key to enter the monovalent
ion/divalent ion selection screen. Using the
“Up”
or
“Down”
key to select. Press
“Slope/Enter”
key to save.
d. Connect the ISE to the BNC connector of the unit.
e. Press
“Mode”
key for the LCD to display “MAN” icon will lit
up. The "CAL" icon will begin to flash.
f.
Rinse the ISE in distilled water and immerse it in the first
standard solution. Press and hold
“Stand”
key for 2
seconds to calibrate. The “CAL” icon will lit up. The main
display will show “- - - -”, the secondary display will show
corresponding ion calibration value (0.10, 1.0, 10, 100).
Using the
“Up”
or
“Down”
key to select the first point
calibration value. Press
“Slope/Enter”
key to save.
