FIELD: thermal and nuclear power stations; meter calibration in extremely pure water of condensate type and power unit feedwater.
SUBSTANCE: for pH-meter calibration ammonia whose concentration varies by 1.5 - 2 times is dosed in working medium. Electric conductivity and temperature of working-medium H-cationized sample are measured. Measurement results are processed in computer with aid of set of equations characterizing ionic equilibrium in source sample and H-cationized samples. Calculated pH value is compared with measurement results.
EFFECT: enhanced precision and reliability of meter calibration in extremely pure waters.
1 cl, 1 dwg, 1 tbl
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