Campbell CPEC300, Руководство по эксплуатации продукта

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Appendix C. Wiring the CR6 and Optional Energy Balance Sensors
C-2
C.1.2 CDM-A116 Module (CPEC306 and CPEC310 only)
Due to the limitations on channel count of the CR6, a CDM-A116 module is
required when using a fine-wire thermocouple, a temp/RH probe, radiation
sensors, soil temperature probes, or soil heat flux plates. A CPEC306 or
CPEC310 should already have a CDM-A116 installed, connected to the CR6,
and configured, but in the case it needs to be reconfigured or in case a CDM-
A116 is being manually added to a CPEC300, prepare it as follows:
1. Connect the CDM-A116 to a 10-32 Vdc power source.
2. Launch Campbell Scientific’s
Device Configuration Utility
software
(v2.12 or newer) and select CDM-A100 Series among the list of
Peripheral devices. If this is the first time connecting, follow the
instruction on the main screen to download the USB driver to the PC.
3. Select the appropriate COM port and click on the Connect button.
4. Once connected, a list of settings is shown. Navigate to the bottom setting,
CPI Address . Change this value to 1. Hit the Apply button at the bottom
of the page and exit the software.
5. Use a Cat5e or Cat6 Ethernet Cable (included with the CPEC enclosure) to
connect the CPI port on the module to the CR6 CPI port.
C.1.3 GPS Receiver
A GPS receiver such as the GPS16X-HVS is optional but will keep the
datalogger clock synchronized to GPS time. If the CR6 clock differs by one
millisecond or more, EasyFlux DL CR6CP will resynchronize the datalogger
clock to match the GPS. The GPS receiver also calculates solar position.
TABLE C-2 shows the default wiring for the GPS16X-HVS.
TABLE C-2. Default Wiring for GPS Receiver
Sensor Quantity Wire Description Color CR6 Terminal
GPS16X-HVS 0 or 1
PPS Grey U1
TXD White U2
Shield Clear
AG ⏚
12V Red 12V
Power Ground Black G
C.1.4 Fine-Wire Thermocouple
Several models of fine-wire thermocouple sensors are available that can be
integrated with the IRGA and sonic anemometer for direct measurements of
sensible heat flux. The EasyFlux DL CR6CP can support from zero to one
fine-wire thermocouple along with the IRGA and sonic anemometer. Shown in
TABLE C-3 are the available types and default wiring for adding a fine-wire
thermocouple.