Campbell Scientific EasyAG Probe for Soil Volumetric Water Content Profiles - Manual (Page 9)

EasyAG ® Soil Water Content Profile Probes
7. Installation
Several configurations are possible when using the EnviroSMART TM / EasyAG ®
Probes with Campbell Scientific dataloggers. Among those configuration are the
following:
Option 1 (Preferred)
Device Function
Probe Output scaled frequency
Datalogger Store scaled frequency, calculate and store water content
Option 2
Device Function
Probe Output water content
Datalogger Store water content
Option 1 allows for use of data in Sentek’s Irrimax Software, which allows for
application of new soil calibrations after data are collected. Option 1 is used for
the purposes of this manual.
Refer to the installation manual published for each probe for information on
access tube installation. Appendix A addresses probe normalization.
8. Probe Wiring
A very small flat-point screw driver is used to open the gates of the EasyAG ®
terminals before insertion of wires. Tighten the gate screws after inserting wires.
8.1 SDI-12 Interface Wiring
FIGURE 1. EasyAG ® SDI-12 Interface
Probe Pin CR10X / CR23X CR200 Series
SDI-12 3 C1 C1 / SDI-12
Gnd 2 G or s
+Vin 1 12 V SW Battery
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