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5.3.1 Cell ConstantMenu
Change the cell constant without fail inthefollowingcases.
a
youwillinstall new cell orreplace toother cell.
）
The cellconstantofsensorismarked on itself
F E S -
-
-
MODEL
MFG No
cablenearterminals.
Adjustthereading ontheSecondarydisplay
1
CELL CONST
×
until it matches this value.
b
The cell constant value will be changed by contamination and deterioration if you used the sensorfor
）
along time.
The first,wash electrode enough with the cleaner. Then you must determine new cell constant to
immerse standard solutionsasfellow.
℃
℃
standardsolution
conductivity mS/cm a t 2 5
temperature coefficient at 25
(
)
１．１８６
２．０９
0.01N NaCl
１０．６６
２．０２
0.1 N NaCl
１．４１２
１．９６
0.01N KCl
１２．８６
１．９０
0.1 N KCl
Determine standard solution accordingtoconfiguraionofinstrument.
Immerse inselected standardsolution to measure.
conductivityofstandard solution
×
newcellconstant K = storedcellconstant
(
)
readingone thedisplay mesuring value
Push
keyfor1secondorovertoCalibrationMode.
CAL
Main display shows
toindicate Cell Constant Menu.
①
Push
key.
②
ENT
Secondary display starts Flashing toindicate changeable value.
Push andrelease
keys tochange the valueto desired
③
「
」
▲
▼
cell constant.One push counts up/down step bystep.
And keep pushing, counting up/down speeds up.
Push
key.
④
ENT
The Set Value flashes and shows itisdefined.
M E A S
A LM
D IS P
C A L
2
1
2
1
MEAS
ALM
DISP
CAL
2
1
2
1
M E A S
A LM
D IS P
C A L
2
1
2
1
M E A S
A LM
D IS P
C A L
2
1
2
1
