Campbell Scientific CS650 and CS655 Water Content Reflectometers - Manual (Page 32)

CS650 and CS655 Water Content Reflectometers
6.6.6 CR200X With 3 CS650 Probes
This CRBasic example program measures 3 CS650 probe on a CR200X every
15 minutes, storing hourly averages of volumetric water content, electrical
conductivity, soil temperature, permittivity, period average, and voltage ratio.
The CS650’s have SDI-12 addresses of 0, 1, and 2. Sensors are powered with
the SWBatt channel which requires a 3 second warm-up time. Alternately, the
red wires may be connected to Battery + for continuous power which would
reduce measurement time. Wiring for the example is shown in TABLE 6-10.
Assignment of aliases and units is not shown in this example but may be used
following Program Example 1 above.
TABLE 6-10. Wiring For Program Example 6
CR200X CS650’s (Wiring same for all)
SW Battery Red
C1/SDI-12
Green
G channels Black, Orange, Clear
Code Example 6. CRBasic Code: CR200X Program to Measure 3 CS650
Probes
Public CS650(18)
DataTable (CS650,1,-1)
DataInterval (0,60,Min)
Average (18,CS650(),False)
EndTable
BeginProg
Scan (15,Min)
SWBatt (1 ) 'Apply power to CS650's
Delay (3,sec) 'Warm-up time of 3 seconds
'CS650 #1
SDI12Recorder (CS650(1),"0M3!",1,0)
'CS650 #2
SDI12Recorder (CS650(4),"1M3!",1,0)
'CS650 #3
SDI12Recorder (CS650(7),"2M3!",1,0)
SWBatt (0 ) 'Remove power from CS650's
CallTable CS650 'Call Data Table
NextScan
EndProg
24