Campbell SP-LITE Manuale Utente Scaricare il pdf (Pagina 13)

SP-LITE Silicon Pyranometer

4. Wiring

The SP-LITE can be measured with a differential or single-ended channel on

the datalogger; a differential channel is recommended.

FIGURE 8. SP-LITE to Datalogger Connections

TABLE 1. Datalogger Connections for Differential Measurement

Function Colour CR10X,CR510 CR23X 21X/CR7

Radiation Signal White Differential H Differential H Differential H

Signal Reference Green Differential L Differential L Differential L

Jumper to AG

Shield Clear G

TABLE 2. Datalogger Connections for Single-Ended Measurement

Function Colour CR10X,CR510 CR23X 21X/CR7

Radiation Signal White S.E. Channel S.E. Channel S.E. Channel

Signal Reference Green AG

Shield Clear G

5. Datalogger Programming

The SP-LITE outputs a low-level voltage ranging from 0 to a maximum of

about 120mV. A differential voltage measurement (Instruction 2) is

recommended because it has better noise rejection than a single-ended

measurement. If a differential channel is not available, a single-ended

measurement (Instruction 1) can be used. The acceptability of a single-ended

measurement can be determined by simply comparing the results of single-

ended and differential measurements made under the same conditions.

Radiation Signal White

Signal Reference Green

Shiel

Clea

(User supplied jumper wire for differential measurement only)

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Campbell SP-LITE Manuale Utente Pagina 13