Campbell Scientific LP02 Hukseflux Pyranometer - Manual (Page 16)

LP02 Pyranometer
7. Operation
7.1 Wiring
A schematic diagram of the LP02 is shown in FIGURE 7-1.
White
Green
Clear
FIGURE 7-1. LP02 Schematic
When Short Cut is used to create the datalogger program, the sensor should be
wired to the channels shown in the wiring diagram created by Short Cut.
A differential voltage measurement is recommended because it has better noise
rejection than a single-ended measurement. If a differential channel is not
available, a single-ended measurement can be used.
Connections to Campbell Scientific dataloggers for a differential measurement
are given in TABLE 7-1. A user-supplied jumper wire should be connected
between the low side of the differential input and ground (AG or ) to keep
the signal in common mode range.
Connections to Campbell Scientific dataloggers for a single-ended
measurement are given in TABLE 7-2.
TABLE 7-1. Differential Connections to Campbell Scientific Dataloggers
Color Description
CR9000(X)
CR5000
CR3000
CR1000
CR800
CR850
CR510
CR500
CR10(X)
21X
CR7
CR23X
White Signal (+) DIFF Analog High DIFF Analog High DIFF Analog High
Green Signal (–) *DIFF Analog Low *DIFF Analog Low *DIFF Analog Low
Clear Shield G
* Jumper to AG or with user supplied wire.
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