User Manual

<7. COMMISSIONING OF SC (Conductivity)>
7-3
IM 12A01A02-01E 5th Edition : Oct. 31, 2013-00
7.1 Measurement setup
This section describes how to set up various parameters relating to measurements.
Measurements are performed based on the measurement parameter setup.
7.1.1 Measurement
Select a measurement parameter from Conductivity, Resistivity, Concentration, and Conduct.
+ Concentr. The setting of the measurement parameter changes the menu structure in Error
conguration,Displaysetup,etc.accordingly.
7.1.2 Conguresensor
Thissectiondescribeshowtocongurethesensortobeconnected.
l Sensor type
Choose the sensor type from “2-electrode” and “4-electrode.”
Two-electrode sensors are usually used for conductivity and/or resistivity measurements.
However, polarization of the electrodes may occur at high conductivity ranges, which may cause
an error in conductivity measurement. To avoid this, use 4-electrode sensors.
l Measuring unit
Either /cm or /m can be chosen here.
TheprocessvalueswillbeexpressedinS/cmorS/minconductivitymodeorΩ.cmorΩ.min
resistivity mode, respectively.
l Cell constant (factory)
The cell constant given at factory shipment is set.
When a new sensor is connected, set the new cell constant which is indicated on the sensor.
When a cell constant is changed, a calibrated cell constant (c.c. (adjusted)) will be the same
value of the new cell constant (factory) after resetting an old one.
The cell constant is indicated on the sensor nameplate, etc. by either of the following two ways:
• Cellconstantindicationandinputmethods
(1) When the cell constant itself is written on the sensor nameplate, enter it directly. (for
electrodes SC211G, SC8SG, and SC4AJ)
(2) Whenthe“percentageofadeviationfromthenominalcellconstant(±□.□%)”isindicatedon
the sensor nameplate, enter the cell constant as follows. (for electrode SC210G)
In case of the indication of a nominal cell constant of 5 cm
-1
and a deviation value of
(CORR.%=-1.1):
  Theinputcellconstantis5x(100–1.1)/100=4.945;enterthis4.945.
7.1.3 Temperature settings
SelectthetemperatureelementusedforcompensationfromamongPt1000,Pt100,Ni100,8k55,
and Pb36 (JIS 6k). Select the same type as the temperature element that is actually connected.
If a thermistor is used for the temperature sensor, select Pb36 (JIS 6k).
Celsius (°C) or Fahrenheit (°F) temperature units are available. If the unit is changed, the
following values are also recalculated automatically to the new unit:
• Manualtemp.
• Referencetemp.
• Temp.coefcient
• Temp.rangesinthematrix
SC
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