Process Unit 73 LF - Knick

Process Unit 73 LF
Temperature Detection during
Calibration
Why Temperature Detection?
The temperature of the calibration solution must
be determined because its conductivity is temperature
dependent:
For automatic calibration, the temperature of
the calibration solution must be known to select
the correct conductivity value from the chart
(see chapter 15).
For manual calibration and sampling, you must
enter the temperature-corrected conductivity
value.
During parameter setting, you define if calibration
temperature is automatically measured or must be
entered manually (see page 9–15).
Automatic Temperature Detection
For automatic cal temp detection, the Process Unit
73 LF detects calibration solution temperature using
a Pt 100, Pt 1000 or Ni 100 temperature probe.
For automatic temperature detection, there must
be a temperature probe in the calibration solution.
This probe must be connected to the temperature
input of the Process Unit 73 LF!
Otherwise you must select manual entry of calibration
temperature.
When ”Cal Temp” has been set to ”Auto”, ”Measured
Cal Temp” is read in the menu.
When ”Cal Temp” has been set to ”Manual”, ”Calibration
Temperature” is read in the menu.
Manual Temperature Input
Calibration solution temperature must be entered
manually:
Measure the calibration solution temperature, e.g.
using a glass thermometer.
Place the cursor in the Calibration menu on the
value for calibration temperature using and
.
Enter the measured temperature using scrolling
and cursor keys (see page 2–5) and confirm your
entry with .
6–4 Calibration