horiba LAQUAact D-74, Instruction Manual

Page: 51 / 112

Conductivity measurement
D-74 35
• Setting the cell constant (default: 1.000×100 m
-1
)
A cell constant is set for each conductivity cell. To measure conductivity correctly, the cell
constant of the conductivity cell must be set in the instrument.
1. Press the key to enter the setting mode.
2. Press the keys to select the "CELL" (cell constant setting) and then press
the key.
3. Press the keys to select the digit number of the cell constant of the
conductivity cell and then press the key.
4. Press the keys to enter the number of the cell constant of the conductivity
cell and then press the key.
Note
・ The unit used for the cell constant corresponds the unit set in “ Setting the conductivity unit
(default: S/m) ” (page 33).
・
Match the unit indicated on the conductivity cell to the unit set in the instrument.
10 m
-1
⇔
0.1 cm
-1
100 m
-1
⇔
1 cm
-1
1000 m
-1
⇔
10 cm
-1
・
The cell constant may fluctuate depending on conditions of use. Check and calibrate the
conductivity cell about once a year (“ Checking and calibrating the conductivity cell ” (page
70)).
key
key
key