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Appendix C. EasyFlux
®
DL CR6KH20
C-3
C.3.1 Required Sensors
A KH20, CSAT3B, and Temp/RH Probe must be wired to the CR6 for
EasyFlux DL CR6KH20
to be functional. TABLE
for these sensors.
TABLE C-1. Default Wiring for Required Sensors
Sensor
Quantity
Wire Description
Color
Terminal
KH20
1
Signal
White
U3
Signal Reference
Black
U4
1/
Power
Red
12V
Power Ground
Black
G (power ground)
Shield
Clear
⏚
(analog ground)
CSAT3B
1
CSAT3BCBL3 CPI
Cable
RJ45 Connector
CR6 CPI Port (if no
Volt116) or
Volt116 CPI Port
CSAT3BCBL2
Power Cable, 12V
Red
12V
CSAT3BCBL2
Power Cable, Ground
Black
G
HMP155A/
EE181
2/
Temp/RH Probe
1
Temp Signal
Yellow/
Yellow
U5
RH Signal
Blue/
Blue
U6
RH Signal Reference
White/
Black
G
3/
Shield
Clear/
Clear
⏚
Power
Red/
Red
+12 V
Power Ground
Black/
None
G
3/
1/
Wire a user-supplied jumper from U4 to
⏚
.
2/
Wire colors for the HMP155A are shown in normal font, while colors for the EE181 are italicized.
3/
Due to terminal constraints, the Temp/RH Probe is a single-ended (SE) voltage measurement. As an SE
measurement from a sensor that is powered continuously, wire the signal reference and power ground wires
both to G.
C.3.2 Optional Sensors
C.3.2.1 VOLT116 Module
Due to the limitations on terminal count of the CR6, a VOLT116 (or
CDM-A116) module is required when adding optional sensors. Prepare the
module as follows:
1.
Connect the module to a 10-32 VDC power source.
2.
Launch Campbell Scientific
Device Configuration Utility
software (v2.12
or newer) and select
VOLT116
. If this is the first time connecting, follow
the instructions on the main screen to download and install the USB driver
to the computer.
3.
Select the appropriate COM port and click
Connect
.