Campbell CS475 Dokumentacja Pobierz pdf (Strona 13)

CS475, CS476, and CS477 Radar Water Level Sensor

4. Wiring

4.1 Datalogger Connection

As shipped from Campbell Scientific, the sensor is fitted with a cable for

connection with the datalogger. Appendix A describes replacing this cable.

Connections to Campbell Scientific dataloggers are given in Table 4-1. When

Short Cut is used to create the datalogger program, the sensor should be wired

to the channels shown on the wiring diagram created by Short Cut.

Connect the wires in the order shown in Table 4-1.

CAUTION

TABLE 4-1. Wiring Diagram

Color

Description

CR800,

CR850,

CR1000,

CR3000,

CR10(X),

CR510, CR500

CR23X

CR5000

CR200(X)

white SDI-12 Signal Odd Numbered

Control Port

(C1, C3…)

Odd Numbered

Control Port

(C1, C3…)

Odd Numbered

Control Port

(C1, C3…)

SDI-12 C1/SDI-12

clear Chassis ground

red +12V (power

supply for

sensor)

12V 12V 12V 12V Battery+

black ground G G

G G

4.2 Multiple Sensors Connection

To use more than one probe per datalogger, you can either connect the

different probes to different SDI-12 compatible ports on the datalogger or

change the SDI-12 addresses of the probes and let them share the same

connection. Using the SDI-12 address minimizes the use of ports on the

datalogger and also allows probes to be connected in a “daisy-chain” fashion

which can minimize cable runs in some applications.

4.3 Built-in Self Test (BIST)

After connecting the sensor to the datalogger’s power terminals, the sensor

performs a BIST (built-in self test) for approximately 80 seconds (factory

default). During this self-check, an internal check of the electronics occurs.

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