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CMP3-L Pyranometer

4. Wiring

A schematic diagram of the CMP3-L is shown in Figure 4-1.

Red

Blue

Black

White

Black

Shield

FIGURE 4-1. CMP3-L Schematic

When Short Cut for Windows software 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 4-1. 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 4-2.

TABLE 4-1. 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 DIFF Analog High

Black Signal (-) *DIFF Analog Low *DIFF Analog Low *DIFF Analog Low

Shield Shield

* Jumper to AG or

with user supplied wire.

A CMP3-L purchased from Campbell Scientific has different

wiring than a CMP3 purchased directly from Kipp & Zonen.

NOTE

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 17 18

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