Campbell Scientific CS650 and CS655 Water Content Reflectometers - Manual (Page 28)

CS650 and CS655 Water Content Reflectometers
6.6.2 CR1000 With 2 CS650 Probes on Same Control Port
This CRBasic example program measures two CS650 probes on a CR1000
every 15 minutes, storing hourly averages of volumetric water content,
electrical conductivity, and soil temperature and samples of permittivity, period
average and voltage ratio. The first CS650 has a SDI-12 address of 0 and the
second an address of 1. Wiring for the example is shown in TABLE 6-6.
Assignment of aliases and units is not shown in this example but may be used
following Program Example 1 above.
TABLE 6-6. Wiring For Program Example 2
CR1000 CS650’s (wiring same for both)
12V
Red
C1 Green
G Black, Orange, Clear
Code Example 2. CRBASIC Code: CR1000 Program to Measure 2 CS650
Probes on the Same Control Port
Public CS650(6)
Public CS650_2(6)
DataTable (DatoutCS650,1,-1)
DataInterval (0,60,Min,2)
Average (3,CS650(1),FP2,False)
Sample(3,CS650(4),IEEE4)
Average (3,CS650_2(1),FP2,False)
Sample(3,CS650_2(4),IEEE4)
EndTable
BeginProg
Scan (15,Min,0,0)
SDI12Recorder (CS650(1),1,0,"M3!",1.0,0)
SDI12Recorder (CS650_2(1),1,1,"M3!",1.0,0)
CallTable DatoutCS650 'Call Data Table
NextScan
EndProg
6.6.3 CR1000 With 12 CS650 Probes on Multiplexer
This CRBasic example program measures 12 CS650 probes on a AM16/32B
multiplexer every 15 minutes, storing hourly averages of volumetric water
content, electrical conductivity, soil temperature, permittivity, period average,
and voltage ratio. All probes are addressed with SDI-12 address of 0. In this
example the probes are powered through the switched 12V channel and require
3 seconds warm-up time per probe. Total time to measure all 12 probes is
more than 36 seconds. Alternately, all of the red wires for the probes could be
connected to a bus separate from the multiplexer with the bus connected to
12V for continuous power. This would decrease measurement time. Wiring
for the example is shown in TABLE 6-7. Assignment of aliases and units is not
shown in this example but may be used following Program Example 1 above.
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