Campbell CVF4 Manual de instrucciones descargar pdf (Pagina 20)

CMP6-L, CMP10-L, CMP11-L, and CMP21-L Pyranometers

7.2.1 CMP6, CMP10, CMP11, and CMP21 Thermopile Schematic

A schematic diagram of a CMP6, CMP10, CMP11, or CMP21 thermopile is

shown in Figure 7-4.

Red

Blue

Black

Figure 7-4 CMP6, CMP10, CMP11, or CMP21 thermopile detector

schematic

7.2.2 CMP6 and CMP11 Wiring

CMP6, CMP10, or CMP11 purchased from Campbell Scientific

has different wiring than a pyranometer purchased directly from

Kipp & Zonen.

The pyranometer is measured using either differential analog channels or

single-ended analog channels.

A differential voltage measurement is recommended because it has better noise

rejection than a single-ended measurement.

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 7-2able 7-2.

TABLE 7-1. CMP6, CMP10 and CMP11 Differential Connections to Campbell Scientific Dataloggers

Color

Description

CR9000(X), CR5000,

CR3000, CR1000,

CR800

CR510, CR500,

CR10(X)

21X, CR7, CR23X

White

Signal (+)

DIFF Analog High

DIFF Analog

High

Black

Signal (

–)

*DIFF Analog Low

Shield

* Jumper to AG or

with user supplied 26 AWG or larger wire.

Note

White (+)

Black (-)

Shield

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 41 42

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