Campbell-scientific CS451/CS456 Pressure Transducer Manual do Utilizador descarregar pdf (Página 21)

CS451/CS456 Submersible Pressure Transducer

For example, if the correct elevation of the water, as measured by a staff gauge

or other measurement device, is 2015.50 feet, and the CS451 provides a

reading of 5.76 psig, then:

5.76 psig • 2.31 ft/psig = 13.3056 ft.

So, the offset is calculated:

2015.50 ft – 13.3056 ft = 2002.1944 ft

This offset can be accounted for in the program instruction of the SDI-12

recorder.

7.3 Wiring

Power down your system before wiring the CS451/CS456. The

shield wire plays an important role in noise emissions and

susceptibility as well as transient protection.

7.3.1 SDI-12 Datalogger Connections

TABLE 7-1. SDI-12 Wiring

Color

CS451/CS456

Function

CR800

CR5000

CR3000

CR1000

CR200(X)

Series

CR510

CR23X

CR10X

Red +12 Vdc 12 V Battery+ 12 V

Black Power Ground G G G

White SDI-12 Signal *Control Port C1/SDI-12 Control Port

Blue GND GND G G

Yellow GND GND G G

Clear Shield GND G G

*dedicated SDI-12 port on CR5000

7.3.2 RS-232 Connections

TABLE 7-2. RS-232 Wiring

Color

CS451/CS456

Function

Connection

RS-232 9-pin

Red +12vdc Power Source

Black Power Ground Power Ground

White RS-232 Tx (Output) Transmit Pin 2 Rx (Input)

Blue RS-232 Rx (Input) Receive Pin 3 Tx (Output)

Yellow Digital Ground Ground Pin 5 GND

Clear Shield GND Ground

NOTE

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 47 48

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