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5. Resistivity Mode
5.1 Selecting Resistivity Mode
1. Select Resistivity Mode (
→
→
F3:Mode
→
→
F3:Resist.
).
2. The
smart
CHEM
-C
now proceeds to Resistivity measurement mode. Note that a “
∗∗
” is
shown in place of the decimal point until a successful calibration has been performed (see
section 5.7).
5.2 Setting the Resistivity calibration standard
The factory default for this item is 362.3
Ω
Ω
.cm (equivalent to 2.76mS/cm). If this is satisfactory,
go directly to section 5.3.
1. Select the Resistivity Standard entry
(
→
→
F4:Setup
→
→
F1:Standards
→
→
F3:Resistivity
).
The following screen is now displayed…
Resistivity
Standard:362.3
Ω
Ω
.cm
Range
5
Ω
Ω
.cm to 50K
Ω
Ω
.cm
2. Type in the value of the Resistivity 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
smart
CHEM
-C
will now ask you to enter the units for the Resistivity standard…
Resistivity
Standard:362.3
Select Units
F1:
Ω
Ω
.cm F2:K
Ω
Ω
.cm
Press
to set the Resistivity Standard as
Ω
.cm.
Press
to set the Resistivity Standard as K
Ω
.cm.
5. The Resistivity standard is now programmed for use at calibration.
5.3 Setting the Reference Temperature
The factory default setting for this item is 25
O
C. If this is satisfactory, go directly to section 5.4.
1. Select the ATC configuration menu.
(
→
→
F4:Setup
→
→
F6:Next
→
→
F3:Reference Temp.
)
2. Press
to reference all readings to 25
O
C for Automatic Temperature Compensation.
Press
to reference all readings to 20
O
C for Automatic Temperature Compensation.
Press
to quit without changing the current setting.