User Manual

<Appendix 3 For ISC (Inductive Conductivity)>
App.3-3
IM 12A01A02-01E 5th Edition : Oct. 31, 2013-00
<Calculationexample>
 Calculatethetemperaturecoefcientofaliquidfromthefollowingdata.
 Conductivity124.5µS/cmataliquidtemperatureof18.0°Candaconductivity147.6µS/cm
ataliquidtemperatureof31.0°C.
Substituting the data in the above formula gives the following result.
147.6 - 124.5
x 100= 1.298 %/°C
α =
124.5x(31.0 - 25) - 147.6x(18.0 - 25)
 SetthetemperaturecoefcientintheFLXA21converter.
Whenthetemperaturecoefcientalreadysetisaccurate,theconductivitytobedisplayed
mustbeconstantregardlessofliquidtemperature.Thefollowingcheckwillmakesurethatthe
temperaturecoefcientalreadysetisaccurate.
If,whentheliquidtemperatureislowered,alargerconductivityvalueisindicated,the
temperaturecoefcientalreadysetistoosmall.
Theoppositealsoapplies.Ifasmallerconductivityvalueisindicated,thetemperaturecoefcient
alreadysetistoolarge.Ineithercase,changethetemperaturecoefcientsothattheconductivity
no longer changes.
l Matrix
Matrixmeanstemperaturecompensationwiththetemperaturecompensationmatrix.
Thetemperaturecompensationmatrixisatableofconductivityvaluesatdifferenttemperatures
and concentrations.
Ready-madematrixesanduser-denedmatrixesareavailable.
<Ready-made matrixes>
Ready-madetemperaturecompensationmatrixesareavailableforcommoninorganicacidsand
bases. Those for ammonia and morpholine are also available.
Table 2 Ready-made temperature compensation matrixes
Matrix
Compound to
be measured
Concentration
Temp. compensation
range
Details
Sulfunic acid 1..5%
H
2
SO
4
1 to 5% 0 to 100˚C
Table A
Sulfunic acid 1..27%
H
2
SO
4
1 to 27% -1to99˚C
TableB
Sulfunic acid 39..85%
H
2
SO
4
39 to 85% -18to116˚C
Table C
Sulfunic acid 93..100%
H
2
SO
4
93 to 100% 10to90˚C
TableD
HCl 0..5%
HCl 0 to 5% 0to60˚C
Table E
HCl 0..18%
HCI 0 to 18% -10to65˚C
Table F
HCl 24..44%
HCI 24 to 44% -20to65˚C
Table G
HNO
3
1..5%
HNO
3
1 to 5% 0to80˚C
Table H
HNO
3
0..25%
HNO
3
0 to 25% 0to80˚C
Table I
HNO
3
35..85%
HNO
3
35 to 85% -16to60˚C
Table J
NaOH1..5%
NaOH 1 to 5% 0to100˚C
Table K
NaOH0..15%
NaOH 0 to 15% 0to100˚C
Table L
NaOH25..50%
NaOH 25 to 50% 0to80˚C
Table M
Theready-madetemperaturecompensationmatrixesarelistedinTableAtoMwhere
temperatures are in the column and concentrations are in the rows.
App.
ISC