Thermo Scientific Russell RL060C, Руководство пользователя

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Thermo Scientific Russell RL060C Conductivity Meter User Guide
Conductivity, μS/cm Resistivity, megohm-cm
0 .056 18
0 .1 10
1 .0 1 .0
2 .5 0 .4
10 .0 0 .1
Conductivity and Temperature
Conductivity .in .aqueous .solutions .reflects .the .concentration, .mobility, .and .charge .
of .the .ions .in .solution . .The .conductivity .of .a .solution .will .increase .with .increasing .
temperature, .as .many .phenomena .influencing .conductivity .such .as .solution .viscosity .
are .affected .by .temperature . .
The .relationship .between .conductivity .and .temperature .is .predictable .and .usually .
expressed .as .relative .% .change .per .degree .centigrade . .This .temperature .coefficient .
(% .change .per .degree) .depends .on .the .composition .of .the .solution .being .measured . .
However, .for .most .medium .range .salt .concentration .in .water, .2% .per .degree .
works .well . .Extremely .pure .water .exhibits .a .temperature .coefficient .of .5 .2%, .and .
concentrated .salt .solutions .about .1 .5% . .
Since .temperature .affects .the .conductivity .measurement .so .profoundly, .the .usual .
practice .is .to .reference .the .conductivity .to .some .standard .temperature . .This .is .typical .
25 .°C, .but .the .RL060C .meters .permit .the .choice .of .20 .°C .or .25 .°C .in .the .advance .
setup .menu . .
Both .meters .permit .you .to .enter .the .temperature .coefficient .which .best .suits .your .
sample .and .use .an .ATC .probe .to .automatically .temperature .compensate .back .to .the .
chosen .reference .temperature . .