8.4.8.6 Process pH reading changes with flow ............................................................. 110
8.4.8.7 Process pH grossly wrong or noisy ................................................................... 110
8.4.8.8 Process readings noisy ..................................................................................... 111
8.4.9 Simulating input currents - dissolved oxygen ...............................................................112
8.4.10 Simulating input currents - chlorine and ozone ............................................................113
8.4.11 Simulating inputs - pH ................................................................................................. 114
8.4.11.1 General information about simulating pH inputs ............................................. 114
8.4.11.2 Preamplifier in transmitter ...............................................................................114
8.4.11.3 Preamplifier in a junction box ...........................................................................116
8.4.11.4 Preamplifier in sensor .......................................................................................116
8.4.12 Simulating temperature .............................................................................................. 116
8.4.12.1 General information about simulating temperature .........................................116
8.4.12.2 Simulating temperature procedure ..................................................................117
8.4.13 Measuring reference voltage ....................................................................................... 118
Chapter 9 Digital communications ............................................................................................... 121
9.1 HART communications ...............................................................................................................121
9.1.1 Overview of HART communication .............................................................................. 121
9.1.2 HART interface devices ................................................................................................ 121
9.2 Foundation Fieldbus communication ......................................................................................... 122
9.2.1 Foundation Fieldbus specifications .............................................................................. 123
9.3 Asset Management Solutions .....................................................................................................124
Chapter 10 Return of material ........................................................................................................ 127
10.1 General information about returning material ............................................................................127
10.2 Warranty repair ..........................................................................................................................127
10.3 Non-warranty repair ...................................................................................................................127
Appendices and reference
Appendix A Engineering drawings .................................................................................................. 129
Appendix B EU Declarations of Conformity ......................................................................................137
Contents
Instruction Manual v
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