wtw inoLab 740, Руководство по эксплуатации

Страница: 175 / 274

Conductivity
175
10 Conductivity
Measuring modules for the inoLab Level 3:
Cond, pH/Cond and Multi.
10.1 Settings for conductivity measurements
In order to achieve comparable and reproducible measuring
results, we recommend checking and, if necessary,
correcting the current settings before measuring.
10.1.1 Determining the measuring range
You can select the measuring range manually or have it
selected automatically. We recommend setting the
measuring range manually when the intended
measurement is output to a recorder at the same time.
You can determine the measuring range for measuring the
conductivity as follows:
l
Automatic selection of the measuring range
l Manual selection between the following ranges with
the following resolution:
0.001 µS (if you use
LR001 ),
0.01 µS (if you use LR01 ),
0.1 µS/cm, 1 µS/cm, 0.01 mS/cm, 0.1 mS/cm, 1 mS/cm
l Measuring the salinity (Sal) and the total dissolved solids
(TDS)
Note
If you are using a recorder, we recommend deactivating the
AutoRange function. Specify the expected range
manually. Otherwise, the recorder scaling will change to
a different range due to the switch-over.