Campbell CS650, Руководство по эксплуатации продукта

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FIGURE 7-1. CS650G Rod Insertion Guide Tool with Pilot Rod
7.3 Data logger wiring
Campbell Scientific data loggers typically use SDI-12 to measure the sensor because RS-232
communications require more terminals per CS650 and RS 232 programming is more
complicated than SDI-12 programming.
Table 7-1 (p. 11) shows the SDI-12 wiring for the CS650 water content reflectometer. SDI-12 data is
transmitted to a CRBasic data logger odd numbered control or U terminal. Wiring information for
RS-232 communications is provided in
RS-232 wiring (p. 13).
Table 7-1: Wire color, function, and data logger connection for SDI-12
Color Function Data logger connection
Green SDI-12 data
C, SDI-12, or
U configured for SDI-12
1
Red SDI-12 power 12V
Black SDI-12 reference G
Clear Shield G
Orange Not used G
1
U terminals are automatically configured by the measurement instruction.
CS650 and CS655 Water Content Reflectometers 11