IM 12D03D02-01E
4-8
4. Keypad and Display Functions
*1: Model no. of sensor alone is SC72SN-□. (refer to Sec. 1.6)
Press key
or key
five times
Autorange
Fixed range 1
Relationships between automatic and fixed ranges for different sensors
For general-purpose sensor
(SC72-21, -23)
(Example)
For general-purpose sensor (SC72-21, -23)
used with 0-200.0mS/cm
Autorange
Fixed range 5
(0-20.00µS/cm)
Fixed range 4
(0-200.0µS/cm)
Fixed range 3
(0-2.000mS/cm)
Fixed range 2
(0-20.00mS/cm)
Fixed range 1
(0-200.0mS/cm)
For chemical-resistant sensor
(SC72-31)
Autorange
Fixed range 5
(0-20.00µS/cm)
Fixed range 4
(0-200.0µS/cm)
Fixed range 3
(0-2.000mS/cm)
Fixed range 2
(0-20.00mS/cm)
Fixed range 1
(0-200.0mS/cm)
With sensor for high-conductivity
measurement (SC72-41)
Autorange
Fixed range 4
(0-2.000mS/cm)
Fixed range 3
(0-20.00mS/cm)
Fixed range 2
(0-200.0mS/cm)
Fixed range 1
(0-2.000S/cm)
With sensor for high-purity water
measurement (SC72-11)
Autorange
Fixed range 4
(0-40.0MΩcm)
Fixed range 3
(0-2.000µS/cm)
Fixed range 2
(0-20.00µS/cm)
Fixed range 1
(0-200.0µS/cm)
F/ENT
Set range 1 fixed.
F/ENT
*1 *1
*1
*1
*1
Refer to Relationships between automatic and fixed ranges... (above left)
(4) Cell constant setting (C.C) panel
This panel with the mark is used to set the cell constant manually.
Use the keys to set the cell constant. Then press the
F/ENT
key.
Typical cell constants are as follows:
For pure water sensor (SC72-11): 0.05 cm
-1
For general-purpose (SC72-21, -23) and chemical-resistant sensors (SC72-31): 5 cm
-1
Sensors for high-conductivity measurement: 50 cm
-1
When setting the cell constant, you should check the nameplate (attached to sensor
cable) for the model number and cell constant.
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