3 conductivity, Conductivity – Xylem MULTI 1970I PORTABLE MULTIPARAMETER METERS User Manual

Page 78

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Technical data

Multi 1970i

76

7.2.3

Conductivity

Measuring ranges

and resolutions

Variable

Measuring range

Resolution

[µS/cm]

0 ... 1999

1

[mS/cm]

0.00 ... 19.99
0.0 ... 199.9
0 ... 500

0.01
0.1
1

SAL

0.0 ... 70.0
according to the IOT
table

0.1

T [°C]

− 5.0 ... + 105.0

0.1

Accuracies

Variable

Accuracy (± 1 Digit)

[µS/cm] / [mS/cm]

(nonlinear compensa-
tion)

Accuracy Sample

temperature

± 0.5 %

0 °C ... 35 °C
according to EN 27 888;

± 0.5 %

35 °C ... 50 °C
extended nLF function
according to
WTW measurements

SAL

(range 0.0 ... 42.0)

Accuracy Sample

temperature

± 0.1

5 °C ... 25 °C

± 0.2

25 °C ... 30 °C

T [°C] ±

0.1

Cell constant,

calibrating

C [cm

-1

]

0.450 ... 0.500

Reference

temperature

Tref

Can be set to 20 °C or 25 °C

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