Xylem ProLab 4000 MULTIPARAMETER BENCHTOP METER User Manual

Page 7

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ProLab 4000

Contents

7

ba75646e02

01/2010

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 . . . . . . . . . . . . . . . . . 116

9.6.4

Standard subtraction . . . . . . . . . . . . . . . . . . . . 119

9.6.5

Sample addition . . . . . . . . . . . . . . . . . . . . . . . . 122

9.6.6

Sample subtraction . . . . . . . . . . . . . . . . . . . . . 125

9.6.7

Blank value addition (Standard addition with
blank value correction) . . . . . . . . . . . . . . . . . . . 128

10 Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

10.1 General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
10.2 Measuring the conductivity . . . . . . . . . . . . . . . . . . . . . . 131

10.2.1 Preparatory activities . . . . . . . . . . . . . . . . . . . . 131
10.2.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
10.2.3 Measurement settings . . . . . . . . . . . . . . . . . . . 134
10.2.4 Determining/setting the

temperature compensation

. . . . . . . . . . . . . 136

10.2.5 Selecting the nonlinear

temperature compensation TC nLF . . . . . . . . . 139

10.2.6 Selecting the linear temperature compensation TC

Lin... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

10.2.7 Selecting and adjusting the nonlinear

temperature compensation TC nLin1

. . . . . 140

10.2.8 Selecting and determining the nonlinear

temperature compensation TC nLin2

. . . . . 142

10.2.9 Selecting and determining the nonlinear

temperature compensation TC nLin3

. . . . . 144

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