HND-C110
HND-C110 K05/0422
page 9
8. Start operation
Turn device on via
key.
After segment test
the device displays some information on its
configuration:
if cell correction scale was changed (cell correction scale unequal
1.000) (see chapter 10 Automatic adjustment/calibration of cell
correction)
if zero point or slope correction is active
(see chapter 12 Adjustment of temperature input)
After that the device is ready for measuring.
9. Principles of the measurements
9.1 Basics about conductivity
Definition of conductivity γ: The ability of a material to conduct electric current:
l:
length of the material diameter measured resistance
A:
diameter
R:
measured resistance
Unit
common for liquids:
and
The conductivity is the reciprocal value of the resistivity.
(The conductance is the reciprocal value of the measured resistance R)
9.2 Conductivity measurement
The conductivity measurement is a rather uncomplicated measurement. The
standard electrodes are stable for a long time if used correctly and can be
adjusted by an integrated Cal-function.
Measuring ranges: 0.0 – 200.0 µS/cm
0 - 2000 µS/cm
0.00 – 20.0 mS/cm
0.0 – 200.0 m
If the range selection is set to „Auto Range“, the range with the best resolution is
automatically selected. However, interface operation requires a manual/fixed
selection of the measuring range from the table above (No interface operation
with Auto-range!).
