METER ATMOS 41, Руководство пользователя

Страница: 10 / 37

7
Switched
3.6–15 VDC
Digital
In
Data Logger
G
Data
(orange)
Ground
(bare)
Power
(brown)
Figure 3 Wiring diagram
NOTE: The acceptable range of excitation voltages is from 3.6 to 15 VDC. To read the ATMOS 41 with Campbell
Scientific data loggers, power the sensors off a 12 V port or switched 12 V port.
If the ATMOS 41 has a standard 3.5-mm plug and will be connected to a non-METER data
logger, please use one of the following two options when connecting to a non-METER
data logger.
Option 1
1. Clip off the plug on the sensor cable.
2. Strip and tin the wires.
3. Wire it directly into the data logger.
This option has the advantage of creating a direct connection with no chance of the sensor
becoming unplugged. However, it then cannot be easily used in the future with a METER
readout unit or data logger.
Option 2
Obtain an adapter cable from METER.
The adapter cable has a connector for the stereo jack on one end and three wires (or pigtail
adapter) on the other end for connection to a data logger. Both the stripped and tinned
adapter cable wires have the same termination as in
Figure 3 ; the brown wire is excitation,
the orange is output, and the bare wire is ground.
2.6 COMMUNICATION
The ATMOS 41 weather station communicates using the SDI-12 communication protocol.
To obtain detailed instructions, refer to the
ATMOS 41 Integrator’s Guide .