User Manual

<10. COMMISSIONING OF ISC (Inductive Conductivity)>
10-5
IM 12A01A02-01E 5th Edition : Oct. 31, 2013-00
NOTE
PerformazerocheckforaircalibrationwhilethetemperaturecompensationissettoNaCl.
l c.c. high
Highlimitofthecellconstantexpressedasa%ofthenominalvalue.Duringcalibrationthisvalue
is used to check if the calibrated cell constant remains within reasonable limits.
l c.c. low
Lowlimitofthecellconstantexpressedasa%ofthenominalvalue.Duringcalibrationthisvalue
is used to check if the calibrated cell constant remains within reasonable limits.
l Step Range
Set the range over which the stability of a measured value is checked. If variations of a measured
value over the stabilization time are within this set value, the measured value is judged to have
stabilized.
l Stabilization time
Duringcalibration,thestabilityofthemeasurementisconstantlymonitored.Whenvariationsof
the value are within a value set in Step Range over this stabilization time set here, the value is
regarded as being stable. If the value does not stabilize within 10 minutes, calibration is aborted.
l Calibration interval
Settheintervalinwhichanewcalibrationmusttakeplace.Iftheintervalsethereisexceeded,
theinstrumentwillbenotiedaccordingtothesettingin“Calib.timeexceeded”intheerror
conguration.
10.1.6 Concentration
The “Concentration” can be set only when “Conduct. + Concentr.” or “Concentration” is selected
for the Measurement in the Measurement setup menu.
The corresponding concentration given by a measured conductivity can be shown on the Main
display.
l Concentration table
Concentrationcanbecalculatedbyusingthetemperaturecompensationmatrixortheadditional
concentration table.
• Byusingthetemperaturecompensationmatrix
 Setthe“Additionaltable”to“Disabled”.Theconcentrationcanbeobtainedfromthe
temperaturecompensationmatrix(basedontherelationbetweentheconductivityatthe
reference temperature and the concentration).
 SelectTemp.compensation→Method,andthenselectMatrix.Next,chooseasolution
orUserdened1or2(seeSection10.1.4).Theconcentrationcannotbeobtainedbyany
othertemperaturecompensationmethod(TCorNaCl).
• Byusingtheadditionalconcentrationtable
The additional concentration table indicates the relation between the conductivity and the
concentration at the reference temperature. Set the “Additional table” to “Enabled”. The
concentration can be obtained from the additional concentration table.
 Afterenteringvalues,select“Yes”for“Checkvalues?”.Valuesareinterpolatedintoempty
cells. If any mandatory cells are left blank, an error will be issued. An error message is also
issued if there is any error in the concentration table.
After completing entering values in the additional concentration table, set “Additional table”
to “Enabled”.
ISC
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