Campbell Scientific 229 Water Matric Potential Sensor and CE4/CE8 - Manual (Page 20)

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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