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229 Heat Dissipation Matric Water Potential Sensor

5.8 Example #4 — CR10X with AM16/32-series, CE4, and

Sixteen 229 Sensors

Table 5-4 shows wiring information for connecting multiple 229 sensors and

CE4 or CE8 excitation module to an AM16/32-series multiplexer and CR10X

datalogger. A CR10XTCR or 107 probe should be used for the reference

temperature measurement as described at the beginning of this section. See

Figure 6-4 for a schematic of this wiring configuration.

TABLE 5-4. 229 Sensor and CE4/CE8 Wiring with AM16/32 Multiplexer

229

107/CR10XTCR

Function

CR10(X)

CE4/CE8

AM16/32

(4x16 mode)

Blue 229 Thermocouple High ODD H

(1H, 3H, etc)

Red 229 Thermocouple Low ODD L

(1L, 3L, etc)

Green 229 Heater High EVEN H

(2H, 4H, etc)

Black 229 Heater Low EVEN L

(2L, 4L, etc)

Clear 229 Shield G

CE4/CE8 Power 12V +12V

CE4/CE8 Ground G

CE4/CE8 Enable C1 CTRL

1H COM ODD H*

1L COM ODD L*

CE4/CE8 current

excitation channel

Channel 1 COM EVEN H

CE4/CE8 ground

COM EVEN L

AM16/32 Power 12V 12V

AM16/32 Ground G GND

AM16/32 Enable C2 RES

AM16/32 Advance C3 CLK

Red 107 Signal SE5

Black 107 Excitation E1

Purple (Clear for

CR10XTCR)

107 Signal Ground AG

Clear (107 only) 107 Shield G

* Run copper wire from COM ODD H and COM ODD L to 1H/1L if using a

107 probe taped to the AM16/32 as the reference temperature sensor. If using

a CR10XTCR as the reference temperature sensor, run copper wire from COM

ODD H to 1H and run constantan wire from COM ODD L to 1L.

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