Xylem ProLab 4000 - Manual (Page 7)

ProLab 4000 Contents
7 ba75646e03 12/2012
8 ORP voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
8.1 General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
8.2 Measuring the ORP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
8.2.1
Preparatory activities . . . . . . . . . . . . . . . . . . . . . 90
8.2.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
8.2.3 Measuring the relative ORP . . . . . . . . . . . . . . . . 93
8.2.4 Measurement settings . . . . . . . . . . . . . . . . . . . . 96
9 Ion concentration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
9.1 General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
9.2 Measuring the ion concentration . . . . . . . . . . . . . . . . . . 98
9.2.1
Preparatory activities . . . . . . . . . . . . . . . . . . . . . 98
9.2.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
9.2.3 Measurement settings . . . . . . . . . . . . . . . . . . . 101
9.3 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
9.3.1
Carrying out calibration . . . . . . . . . . . . . . . . . . 106
9.3.2 Calibration data . . . . . . . . . . . . . . . . . . . . . . . . 110
9.4 Blank value correction. . . . . . . . . . . . . . . . . . . . . . . . . . 111
9.5 Reference measurement. . . . . . . . . . . . . . . . . . . . . . . . 112
9.6 Measuring with increment procedure (methods) . . . . . . 113
9.6.1
Selecting the measuring method . . . . . . . . . . . 113
9.6.2 Standard addition . . . . . . . . . . . . . . . . . . . . . . . 114
9.6.3 Double standard addition . . . . . . . . . . . . . . . . . 118
9.6.4 Standard subtraction . . . . . . . . . . . . . . . . . . . . 122
9.6.5 Sample addition . . . . . . . . . . . . . . . . . . . . . . . . 126
9.6.6 Sample subtraction . . . . . . . . . . . . . . . . . . . . . 130
9.6.7 Blank value addition
(Standard addition with blank value correction) 134
10 Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
10.1 General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
10.2 Measuring the conductivity . . . . . . . . . . . . . . . . . . . . . . 139
10.2.1 Preparatory activities . . . . . . . . . . . . . . . . . . . . 139
10.2.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
10.2.3 Measurement settings . . . . . . . . . . . . . . . . . . . 142
10.2.4 Determining/setting the
temperature compensation . . . . . . . . . . . . . 144
10.2.5 Selecting the nonlinear
temperature compensation TC nLF . . . . . . . . . 147
10.2.6 Selecting the linear
temperature compensation TC Lin... . . . . . . . . 147
10.2.7 Selecting and adjusting the nonlinear
temperature compensation TC nLin1 . . . . . 148
10.2.8 Selecting and determining the nonlinear
temperature compensation TC nLin2 . . . . . 150
10.2.9 Selecting and determining the nonlinear
temperature compensation TC nLin3 . . . . . 152