15
4. Conductivity Mode
4.1 Selecting Conductivity Mode
1.
Select Conductivity Mode (
→
→
F2:Mode
→
→
F3:Conductivity
).
2.
The
90-FL
now proceeds to Conductivity measurement mode. Note that a “
∗∗
” is shown in
place of the decimal point until a successful calibration has been performed (see section 4.4).
4.2 Setting the Conductivity calibration standard
The factory default for this item is 2.76mS/cm. If this is satisfactory, go directly to section 4.3.
1.
Select the Conductivity Standard entry
(
→
→
F4:Setup
→
→
F1:Standards
→
→
F1:Conductivity
).
The following screen is now displayed…
Conductivity Standard:2760 uS
Range 20uS/cm to 2000mS/cm
2.
Type in the value of the Conductivity standard that is to be used for calibration, including the
decimal point. Use the
key to make any corrections.
3.
Press
to save the value of the standard solution.
Alternatively, press
to quit without changing the current setting.
4.
The
90-FL
will now ask you to enter the units for the Conductivity standard…
Conductivity Standard:2760
Select Units F1:uS/cm F2:mS/cm
Press
to set the Conductivity Standard as µS/cm.
Press
to set the Conductivity Standard as mS/cm.
5.
The Conductivity standard is now programmed for use at calibration.