Campbell-scientific Sentek EnviroSCAN EasyAG SDI-12 Manual v 3.4 Bedienungsanleitung PDF herunterladen (Seite 4)

EnviroSMART & EasyAG SDI-12 Probe Manual

Table of Contents

The EnviroSMART® and EasyAG® SDI-12 Probe Interface.............................1

About the SDI-12 probe interface.......................................................................................................................1

What is SDI-12?.......................................................................................................................................................1

What are the EnviroSMART® and EasyAG® SDI-12 probe interfaces?...................................................1

What is the Intelligent Probe Configuration Utility?........................................................................................2

Setting the Probe Configuration....................................................................................................................2

SDI-12 Probe Interface.........................................................................................4

About setting up the EnviroSMART® and EasyAG® SDI-12 probe interface.........................................4

Why do I need to configure the SDI-12 probe interface?...............................................................................4

SDI-12 Communication........................................................................................5

About the SDI-12 Communication.....................................................................................................................5

Power Sequence.......................................................................................................................................................5

Timing.......................................................................................................................................................................6

Addresses..................................................................................................................................................................7

Data Reading............................................................................................................................................................8

Data Reading using the Start Measurement Command (aM! or aMn!)...................................................8

Data Reading using the Start Concurrent Measurement Command (aC! or aCn!).............................10

Identification..........................................................................................................................................................14

Supported Commands........................................................................................15

SDI-12 Commands Supported...........................................................................................................................15

Extended Commands Supported.......................................................................................................................16

EnviroSMART® Technical Specifications........................................................17

EasyAG® Technical Specifications...................................................................19

Circuit Information.............................................................................................21

Revision Information..........................................................................................22

EnviroSMART® Revision Information............................................................................................................22

EasyAG® Revision Information........................................................................................................................22

Appendix A – Soil Moisture Management.........................................................23

What soil volume does the SDI-12 probe interface measure at a single sensor?.......................................23

What are the water units?.....................................................................................................................................23

What part of the soil profile do multiple sensors on the probe measure?..................................................24

Appendix B – Salinity Management...................................................................25

1 2 3 4 5 6 7 8 9 ... 29 30

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