Campbell-scientific Sentek EnviroSCAN EasyAG SDI-12 Manual v 3.4 Manuel d'utilisateur télécharger pdf (Page 5)

EnviroSMART & EasyAG SDI-12 Probe Manual

Table of Figures

Figure 1: Intelligent Probe Configuration Utility software.........................................................................2

Figure 2: EnviroSMART® and EasyAG® SDI-12 probe interface communication power sequence........6

Figure 3: Voltage levels on the SDI-12 line during an Acknowledge Active command (a!)........................7

Figure 4: EnviroSMART® SDI-12 probe interface board layout.............................................................18

Figure 5: EasyAG® SDI-12 probe interface board layout........................................................................20

Figure 6: SDI-12 interface circuit diagram...............................................................................................21

Figure 7: TTL interface circuit diagram...................................................................................................21

Figure 8: EnviroSMART® SDI-12 probe interface old revision board layout..........................................22

Figure 9: Measurements using metric units..............................................................................................23

Figure 10: Measurements using imperial units.........................................................................................24

Figure 11: Measurements of multiple sensors on the probe......................................................................24

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Campbell-scientific Sentek EnviroSCAN EasyAG SDI-12 Manual v 3.4 Manuel d'utilisateur Page 5