1
Introducción ...............................................................................................................................7
2
Principios básicos ....................................................................................................................11
3
Aplicaciones ............................................................................................................................27
4
Buses de campo digitales ........................................................................................................51
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Índice de contenidos
1.1
1.2
2.1
2.1.1
Señales de medición ............................................................................11
2.1.2
Señales de control ...............................................................................13
2.2
2.3
2.3.1
Termorresistencias ..............................................................................14
2.4
Termopares .........................................................................................................18
2.4.1
Tablas sinópticas .................................................................................19
2.5
2.6
Señales normalizadas .........................................................................................24
2.6.1
2.6.2
3.1
3.1.1
3.1.2
3.1.3
Filtrado .................................................................................................30
3.1.4
3.1.5
3.1.6
3.1.7
3.1.8
3.2
Ejemplos de aplicación........................................................................................37
3.2.1
3.2.2
3.2.3
3.2.4
4.1
HART®................................................................................................................53
4.1.1
Multiplexor HART .................................................................................55
4.1.2
WirelessHART .....................................................................................55
4.2
FOUNDATION Fieldbus ......................................................................................57
4.3
PROFIBUS ..........................................................................................................58
4.4
5
PHOENIX CONTACT