Measuring The Conductivity - wtw inoLab pH/Cond Level 1 Operating Manual

Preparatory
activities
4.4

Measuring the conductivity

The following parameters can be measured:
l Conductivity/resistance
(how to switch over, see section 4.7 C
l
Salinity
l
Total dissolved solids (TDS)
The measuring instrument has the following functions:
l AutoRange (automatic selection of the measuring range),
l AutoRead (drift control) to check the stability of the mea-
suring signal. This ensures the reproducibility of the mea-
suring signal. How to switch the AutoRead function on/off
see page 104.
Perform the following preparatory activities when you want
to measure:
1 Connect the conductivity measuring cell with temper-
ature probe to the measuring instrument. The instru-
ment recognizes the measuring cell and
automatically switches to the previously selected
conductivity measuring mode. If the conductivity cell
is already connected, press the
until the conductivity measuring mode appears.
2 Check the cell constant set up or calibrate the mea-
suring instrument with the measuring cell. The cali-
bration is described in section 4.5.1 D
CELL CONSTANT
from page 105 on.
m
(
CALIBRATION IN CONTROL STANDARD
Operation
)
ONFIGURATION
key repeatedly
ETERMINING THE
)
99