Campbell AVW1 Specifikace stáhnout pdf (Strana 32)

AM16/32B Relay Analog Multiplexer

that only sensor shield (drain) wires be connected to AM16/32B

shield terminals labeled (“

”).

6.1 Single-Ended Analog Measurement without Sensor

Excitation

Sensor to AM16/32B wiring - one single-ended sensor not requiring

excitation can be connected to an input SET with panel mode switch

set to “2x32”.

Multiplexer to Datalogger wiring - The COM signal line is input to a

single-ended analog input channel. The COM signal-ground line is

tied to “

” at the CR23X, 21X, or CR7, and to “AG” at the

CR10(X). Up to 32 single-ended sensors can be measured by one

single-ended datalogger channel in this manner.

Low level single-ended measurements are not

recommended in 21X applications where the 21X's

internal 12VDC supply is used to power the multiplexer

or other peripherals (see Section 4.1.4).

NOTE

00 "2 X 32" Mode

COM ODD H

COM ODD L

ODD H

ODD L

(+) SENSOR

(-)

COM

AM16/32

MUXSIGNAL

SHIELD

SENSOR SHIELD

21X/

CR7

CR10(X)

CR23X/CR3000/

CR800/CR850/

CR1000/CR5000

H H H

AM16/32B

CABLE3CBL

FIGURE 11. Single-ended Measurement without Excitation

00 "4 X 16" Mode