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57
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Measurement of conductivity by Instrument
Resolution
Measurement range (Kcell=0.01)
0.000…1.999
μ
S/cm 0.001
μ
S/cm
Measurement range (Kcell=0.1)
0.00…19.99
μ
S/cm
0.01
μ
S/cm
Measurement range (Kcell=1)
0.0…199.9
μ
S/cm
0.1
μ
S/cm
200…1999
μ
S/cm
1
μ
S/cm
2.00…19.99mS/cm
0.01mS/cm
20.0…199.9mS/cm
0.1mS/cm
Measurement range (Kcell=10)
200…1999mS/cm
1mS/cm
Instrument accuracy (conductivity)
±
0.5%
±
1digit
Measurement of resistivity by Instrument
Resolution
Measurement range (Kcell=0.01)
Up to 1G
Ω⋅
cm
(
∗
)
Measurement range (Kcell=0.1)
Up to 100M
Ω
cm
(
*
)
Measurement range (Kcell=1)
5.0…199.9
Ω⋅
cm
0.1
Ω⋅
cm
200…999
Ω⋅
cm
1
Ω⋅
cm
1.00k…19.99k
Ω⋅
cm 0.01k
Ω⋅
cm
20.0k…99.9k
Ω⋅
cm
0.1k
Ω⋅
cm
100k…999k
Ω⋅
cm
1k
Ω⋅
cm
1…10M
Ω⋅
cm
1M
Ω⋅
cm
Measurement range (Kcell=10)
0.5…5.0
Ω⋅
cm
0.1
Ω⋅
cm
Instrument accuracy (resistivity)
±
0.5%
±
1digit
Measurement of total dissolved solids (with coefficient
χ
/TDS=0.5)
Resolution
Measurement range (Kcell=0.01)
0.00…1.999mg/l
0.005mg/l
Measurement range (Kcell=0.1)
0.00…19.99mg/l
0.05mg/l
Measurement range (Kcell=1)
0.0…199.9 mg/l
0.5 mg/l
200…1999 mg/l
1 mg/l
2.00…19.99 g/l
0.01 g/l
20.0…199.9 g/l
0.1 g/l
Measurement range (Kcell=10)
100…999 g/l
1 g/l
Instrument accuracy (total dissolved solids)
±
0.5%
±
1digit
Measurement of salinity
Resolution
Measurement range
0.000…1.999g/l
1mg/l
2.00…19.99g/l
10mg/l
20.0…199.9 g/l
0.1 g/l
Instrument accuracy (salinity)
±
0.5%
±
1digit
(
∗
) The resistivity measurement is defined as the reciprocal of conductivity: the resistivity indication, near
bottom scale, will appear as in the following table.
K cell = 0.01 cm
-1
K cell = 0.1 cm
-1
Conductivity
(
μ
S/cm)
Resistivity
(M
Ω⋅
cm)
Conductivity
(
μ
S/cm)
Resistivity
(M
Ω⋅
cm)
0.001
μ
S/cm 1000
M
Ω⋅
cm
0.01
μ
S/cm 100
M
Ω⋅
cm
0.002
μ
S/cm 500
M
Ω⋅
cm
0.02
μ
S/cm 50
M
Ω⋅
cm
0.003
μ
S/cm 333
M
Ω⋅
cm
0.03
μ
S/cm 33
M
Ω⋅
cm
0.004
μ
S/cm 250
M
Ω⋅
cm
0.04
μ
S/cm 25
M
Ω⋅
cm
… …
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